Pub Date : 2024-12-15DOI: 10.1016/j.jma.2024.11.013
Xi Liu, Jinglong Pan, You Lv, Xu Wang, Xiaoze Ma, Xinxin Zhang, Guangyi Cai, Zehua Dong
Magnesium implants have received widespread attention in orthopaedic surgery. However, the mechanical degradation and concurrent inflammation caused by the rapid corrosion of Mg limits their applications. In this study, a kind of unique core-shell heterojunction CuS@PPy nanostructures was synthesized and then incorporated in polycaprolactone (PCL) to construct an intelligent coating (CuS@PPy/PCL) on micro-arc-oxidized Mg implants. The PCL-based coating can realize near-infrared (NIR)-driven antibacterial and controllable Mg dissolution according to different bone healing stages. At the beginning of bone remodelling, the coating exhibits promising antibacterial properties with 99.67 % and 99.17 % efficacy against S. aureus and E. coli, respectively, thanks to the singlet oxygen (1O2) and alkoxyl radicals (RO·) generated by the photodynamic effect of CuS@PPy heterojunction under low-power NIR light (1.5 W/cm2). In the bone reparative stage, the PCL-based coating can maintain high corrosion resistance to meet the mechanical requirements of Mg implants in human body fluid. However, after the complete rehabilitation of bones, through a high-power (2 W/cm2) NIR light, the PCL-based coating changed from an elastic to a viscous flow state (44.7 °C) under the photothermal effects of CuS@PPy, leading to quick degradation of the PCL-based coating and following accelerating dissolution of the Mg implant (avoiding secondary surgery). Hopefully, this NIR-responsive coating may provide an innovative method for the antibacterial and controllable dissolution of Mg implants.
{"title":"Near-infrared responsive polycaprolactone coatings for magnesium implants: Photodynamic antibacterial and controllable dissolution","authors":"Xi Liu, Jinglong Pan, You Lv, Xu Wang, Xiaoze Ma, Xinxin Zhang, Guangyi Cai, Zehua Dong","doi":"10.1016/j.jma.2024.11.013","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.013","url":null,"abstract":"Magnesium implants have received widespread attention in orthopaedic surgery. However, the mechanical degradation and concurrent inflammation caused by the rapid corrosion of Mg limits their applications. In this study, a kind of unique core-shell heterojunction CuS@PPy nanostructures was synthesized and then incorporated in polycaprolactone (PCL) to construct an intelligent coating (CuS@PPy/PCL) on micro-arc-oxidized Mg implants. The PCL-based coating can realize near-infrared (NIR)-driven antibacterial and controllable Mg dissolution according to different bone healing stages. At the beginning of bone remodelling, the coating exhibits promising antibacterial properties with 99.67 % and 99.17 % efficacy against <em>S. aureus</em> and <em>E. coli</em>, respectively, thanks to the singlet oxygen (<sup>1</sup>O<sub>2</sub>) and alkoxyl radicals (RO·) generated by the photodynamic effect of CuS@PPy heterojunction under low-power NIR light (1.5 W/cm<sup>2</sup>). In the bone reparative stage, the PCL-based coating can maintain high corrosion resistance to meet the mechanical requirements of Mg implants in human body fluid. However, after the complete rehabilitation of bones, through a high-power (2 W/cm<sup>2</sup>) NIR light, the PCL-based coating changed from an elastic to a viscous flow state (44.7 °C) under the photothermal effects of CuS@PPy, leading to quick degradation of the PCL-based coating and following accelerating dissolution of the Mg implant (avoiding secondary surgery). Hopefully, this NIR-responsive coating may provide an innovative method for the antibacterial and controllable dissolution of Mg implants.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"14 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142823310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-12DOI: 10.1016/j.jma.2024.11.026
Chenyang Jiang, Lidong Gu, Hongwei Xiong, Jingya Wang, Liping Zhou, Mingjie Shen, Jie Wang, Tao Ying, Xiaoqin Zeng
Mg matrix composites (MgMCs) with enhanced mechanical and functional properties, as well as improved elastic modulus, have aroused rising attention from the aerospace, new energy vehicles, and consumer electronics industries. The suitability of the fabrication process is crucial for achieving uniform dispersion of various reinforcing materials within the Mg alloy matrix and for forming strong interfacial bonding. This ensures that the produced MgMCs meet the requirements for fabricating various components with different demands for size and properties. This paper comprehensively reviews the present fabrication methods for MgMCs in four categories: stir casting, external addition methods, in-situ synthesis methods and novel fabrication methods. It comprehensively focuses on the fabrication principles, process characteristics and key parameters optimization of each technology. Through in-depth analysis, their advantages, limitations and applications are evaluated. Meanwhile, the latest research achievements in microstructure control and mechanical performance optimization are explored. Eventually, the development directions of the fabrication methods for MgMCs in the future are also discussed.
{"title":"Review of progress on fabrication technology of Mg matrix composites","authors":"Chenyang Jiang, Lidong Gu, Hongwei Xiong, Jingya Wang, Liping Zhou, Mingjie Shen, Jie Wang, Tao Ying, Xiaoqin Zeng","doi":"10.1016/j.jma.2024.11.026","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.026","url":null,"abstract":"Mg matrix composites (MgMCs) with enhanced mechanical and functional properties, as well as improved elastic modulus, have aroused rising attention from the aerospace, new energy vehicles, and consumer electronics industries. The suitability of the fabrication process is crucial for achieving uniform dispersion of various reinforcing materials within the Mg alloy matrix and for forming strong interfacial bonding. This ensures that the produced MgMCs meet the requirements for fabricating various components with different demands for size and properties. This paper comprehensively reviews the present fabrication methods for MgMCs in four categories: stir casting, external addition methods, in-situ synthesis methods and novel fabrication methods. It comprehensively focuses on the fabrication principles, process characteristics and key parameters optimization of each technology. Through in-depth analysis, their advantages, limitations and applications are evaluated. Meanwhile, the latest research achievements in microstructure control and mechanical performance optimization are explored. Eventually, the development directions of the fabrication methods for MgMCs in the future are also discussed.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"7 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142815935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Grain-twin interactions are significant in texture modification under thermodynamic driving force. In this study, annealing-driven twinning/detwinning behavior, grain growth, and corresponding texture evolution in a pre-deformed AZ31 magnesium alloy were systematically tracked and investigated via in-situ heating synchrotron X-ray diffraction and quasi in-situ electron backscattered diffraction techniques. A twinning texture is generated in the pre-deformed sample due to the activation of {102} tensile twinning. During annealing, dislocation annihilation occurs between 100 and 280 °C, and recrystallization occurs above 280 °C, manifesting as the initial residual matrix and twins being competitively swallowed by each other, forming a bimodal texture. The recrystallization process is completed by boundary movement, which depends on the energy difference across the boundary. In addition, it is found that the grain boundaries favor movement towards the side with higher stored energy, regardless of the boundary type or the boundary energy.
{"title":"Direct observation of annealing-driven recrystallization behavior in magnesium alloy at low strain condition","authors":"Yuzhi Zhu, Shuoxin Lv, Tianyi Li, Yang Ren, Zidong Wang, Dewen Hou","doi":"10.1016/j.jma.2024.11.016","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.016","url":null,"abstract":"Grain-twin interactions are significant in texture modification under thermodynamic driving force. In this study, annealing-driven twinning/detwinning behavior, grain growth, and corresponding texture evolution in a pre-deformed AZ31 magnesium alloy were systematically tracked and investigated via in-situ heating synchrotron X-ray diffraction and quasi in-situ electron backscattered diffraction techniques. A twinning texture is generated in the pre-deformed sample due to the activation of {10<span><span style=\"\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover is=\"true\"><mrow is=\"true\"><mn is=\"true\">1</mn></mrow><mo stretchy=\"true\" is=\"true\">&#x203E;</mo></mover></math>' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"2.202ex\" role=\"img\" style=\"vertical-align: -0.235ex;\" viewbox=\"0 -846.5 570.5 947.9\" width=\"1.325ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"><g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"><g is=\"true\"><g is=\"true\" transform=\"translate(35,0)\"><g is=\"true\"><use xlink:href=\"#MJMAIN-31\"></use></g></g><g is=\"true\" transform=\"translate(0,198)\"><use x=\"-70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use><use x=\"70\" xlink:href=\"#MJMAIN-AF\" y=\"0\"></use></g></g></g></svg><span role=\"presentation\"><math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mover is=\"true\"><mrow is=\"true\"><mn is=\"true\">1</mn></mrow><mo is=\"true\" stretchy=\"true\">‾</mo></mover></math></span></span><script type=\"math/mml\"><math><mover is=\"true\"><mrow is=\"true\"><mn is=\"true\">1</mn></mrow><mo stretchy=\"true\" is=\"true\">‾</mo></mover></math></script></span>2} tensile twinning. During annealing, dislocation annihilation occurs between 100 and 280 °C, and recrystallization occurs above 280 °C, manifesting as the initial residual matrix and twins being competitively swallowed by each other, forming a bimodal texture. The recrystallization process is completed by boundary movement, which depends on the energy difference across the boundary. In addition, it is found that the grain boundaries favor movement towards the side with higher stored energy, regardless of the boundary type or the boundary energy.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"38 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142804502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Edge defects significantly impact the forming quality of Mg/Al composite plates during the rolling process. This study aims to develop an effective rolling technique to suppress these defects. First, an enhanced Lemaitre damage model with a generalized stress state damage prediction mechanism was used to evaluate the key mechanical factors contributing to defect formation. Based on this evaluation, an embedded composite rolling technique was proposed. Subsequently, comparative validation was conducted at 350 °C with a 50 % reduction ratio. Results showed that the plates rolled using the embedded composite rolling technique had smooth surfaces and edges, with no macroscopic cracks observed. Numerical simulation indicated that, compared to conventional processes, the proposed technique reduced the maximum edge stress triaxiality of the plates from −0.02 to −1.56, significantly enhancing the triaxial compressive stress effect at the edges, which suppressed void nucleation and growth, leading to a 96 % reduction in damage values. Mechanical property evaluations demonstrated that, compared to the conventional rolling process, the proposed technique improved edge bonding strength and tensile strength by approximately 67.7 % and 118 %, respectively. Further microstructural characterization revealed that the proposed technique, influenced by the restriction of deformation along the transverse direction (TD), weakened the plastic flow in the TD and enhanced plastic flow along the rolling direction (RD), resulting in higher grain boundary density and stronger basal texture. This, in turn, improved the toughness and transverse homogeneity of the plates. In summary, the embedded composite rolling technique provides crucial technical guidance for the preparation of Mg-based composite plates.
{"title":"Research on edge defects suppression of Mg/Al composite plate rolling: Development of embedded rolling technology","authors":"Chenchen Zhao, Zhiquan Huang, Haoran Zhang, Peng Li, Tao Wang, Qingxue Huang","doi":"10.1016/j.jma.2024.11.024","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.024","url":null,"abstract":"Edge defects significantly impact the forming quality of Mg/Al composite plates during the rolling process. This study aims to develop an effective rolling technique to suppress these defects. First, an enhanced Lemaitre damage model with a generalized stress state damage prediction mechanism was used to evaluate the key mechanical factors contributing to defect formation. Based on this evaluation, an embedded composite rolling technique was proposed. Subsequently, comparative validation was conducted at 350 °C with a 50 % reduction ratio. Results showed that the plates rolled using the embedded composite rolling technique had smooth surfaces and edges, with no macroscopic cracks observed. Numerical simulation indicated that, compared to conventional processes, the proposed technique reduced the maximum edge stress triaxiality of the plates from −0.02 to −1.56, significantly enhancing the triaxial compressive stress effect at the edges, which suppressed void nucleation and growth, leading to a 96 % reduction in damage values. Mechanical property evaluations demonstrated that, compared to the conventional rolling process, the proposed technique improved edge bonding strength and tensile strength by approximately 67.7 % and 118 %, respectively. Further microstructural characterization revealed that the proposed technique, influenced by the restriction of deformation along the transverse direction (TD), weakened the plastic flow in the TD and enhanced plastic flow along the rolling direction (RD), resulting in higher grain boundary density and stronger basal texture. This, in turn, improved the toughness and transverse homogeneity of the plates. In summary, the embedded composite rolling technique provides crucial technical guidance for the preparation of Mg-based composite plates.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"28 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142804501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-09DOI: 10.1016/j.jma.2024.11.022
Chunquan Liu, Huaqiang Xiao, Bo Lin, Hui Shi, Xianhua Chen
Interface segregation of solute atoms has a profound effect on properties of engineering alloys. In this study, we report a novel strategy for breaking the strength-ductility dilemma of Mg alloy via solute segregation. The hot extruded Mg-1.8Gd-0.3Zr (wt.%) alloy sheet was subjected to three different passes of rolling, and then heat-treated at 200 °C. The high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) reveals a remarkable segregation of solute Gd atoms along high and low-angel grain boundaries (GBs). Under almost precipitation-free conditions, the strength and ductility of rolled alloy sheets are simultaneously improved after annealing. Especially for the annealed 3-passes-rolled specimen, the yield strength, ultimate tensile strength, and elongation are simultaneously increased by 11.2%, 7.3%, and 18%, respectively. The solute segregation endows the rolled plate with excellent grain size stability and provides a prominent extra solute cluster strengthening, which completely resists the other softening effects, including dislocation annihilation and grain coarsening during the heating. Meanwhile, the directional migration of Gd atoms and the annihilation of dislocations provide a “clear” space within the grain, which is beneficial for the moving and accumulating of subsequent dislocations. This work sheds light on the solute partitioning behavior and realizes a good application of GB segregation in improving the comprehensive mechanical properties of Mg alloys.
{"title":"Simultaneously improving strength and ductility of Mg-Gd-Zr alloy via solute segregation","authors":"Chunquan Liu, Huaqiang Xiao, Bo Lin, Hui Shi, Xianhua Chen","doi":"10.1016/j.jma.2024.11.022","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.022","url":null,"abstract":"Interface segregation of solute atoms has a profound effect on properties of engineering alloys. In this study, we report a novel strategy for breaking the strength-ductility dilemma of Mg alloy via solute segregation. The hot extruded Mg-1.8Gd-0.3Zr (wt.%) alloy sheet was subjected to three different passes of rolling, and then heat-treated at 200 °C. The high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) reveals a remarkable segregation of solute Gd atoms along high and low-angel grain boundaries (GBs). Under almost precipitation-free conditions, the strength and ductility of rolled alloy sheets are simultaneously improved after annealing. Especially for the annealed 3-passes-rolled specimen, the yield strength, ultimate tensile strength, and elongation are simultaneously increased by 11.2%, 7.3%, and 18%, respectively. The solute segregation endows the rolled plate with excellent grain size stability and provides a prominent extra solute cluster strengthening, which completely resists the other softening effects, including dislocation annihilation and grain coarsening during the heating. Meanwhile, the directional migration of Gd atoms and the annihilation of dislocations provide a “clear” space within the grain, which is beneficial for the moving and accumulating of subsequent dislocations. This work sheds light on the solute partitioning behavior and realizes a good application of GB segregation in improving the comprehensive mechanical properties of Mg alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"14 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-07DOI: 10.1016/j.jma.2024.11.027
Talitha Tara Thanaa, Mohammad Aadil, Alireza Askari, Arash Fattah-alhosseini, Mohammad Alkaseem, Mosab Kaseem
This study explores the development of an organic-inorganic hybrid coating to enhance the corrosion resistance and photocatalytic properties of AZ31 Mg alloy modified by plasma electrolytic oxidation (PEO). The PEO process typically generates a porous oxide layer, which can reduce corrosion protection by allowing corrosive agents to penetrate the substrate. To address this limitation, phenopyridine (PHEN) and 2-methylimidazole (2-IMD) were incorporated into the PEO surface to form a robust organic layer on the Mg alloy. Potassium hydroxide (KOH) was used to adjust the pH, improving the interaction and solubility between the organic molecules and the PEO coating. The hybrid coating exhibited unique twig-like surface structures that contributed to forming a multifunctional coating with high corrosion resistance and superior photocatalytic activity. The PEO-PHEN-2IMD sample on the Mg alloy demonstrated exceptional corrosion resistance, with the lowest corrosion current density (Icorr) of 1.92 × 10-¹⁰ A/cm², a high corrosion potential (Ecorr), and the highest top layer resistance (Rtop) of 2.57 × 106 Ω·cm², indicating excellent barrier properties. Additionally, the coating achieved complete (100%) degradation of methylene blue (MB) within 30 min under visible light. Density Functional Theory (DFT) calculations provide deeper insights into the bonding mechanisms and interaction stability between PHEN, 2-IMD, and the PEO layer on the Mg alloy and MB dye. These findings confirmed the enhanced performance of the hybrid coating in both corrosion resistance and photocatalytic applications.
{"title":"Highly corrosion-resistant and photocatalytic hybrid coating on AZ31 Mg alloy via plasma electrolytic oxidation with organic-inorganic integration","authors":"Talitha Tara Thanaa, Mohammad Aadil, Alireza Askari, Arash Fattah-alhosseini, Mohammad Alkaseem, Mosab Kaseem","doi":"10.1016/j.jma.2024.11.027","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.027","url":null,"abstract":"This study explores the development of an organic-inorganic hybrid coating to enhance the corrosion resistance and photocatalytic properties of AZ31 Mg alloy modified by plasma electrolytic oxidation (PEO). The PEO process typically generates a porous oxide layer, which can reduce corrosion protection by allowing corrosive agents to penetrate the substrate. To address this limitation, phenopyridine (PHEN) and 2-methylimidazole (2-IMD) were incorporated into the PEO surface to form a robust organic layer on the Mg alloy. Potassium hydroxide (KOH) was used to adjust the pH, improving the interaction and solubility between the organic molecules and the PEO coating. The hybrid coating exhibited unique twig-like surface structures that contributed to forming a multifunctional coating with high corrosion resistance and superior photocatalytic activity. The PEO-PHEN-2IMD sample on the Mg alloy demonstrated exceptional corrosion resistance, with the lowest corrosion current density (<em>I<sub>corr</sub></em>) of 1.92 × 10<sup>-</sup>¹⁰ A/cm², a high corrosion potential (<em>E<sub>corr</sub></em>), and the highest top layer resistance (<em>R<sub>top</sub></em>) of 2.57 × 10<sup>6</sup> Ω·cm², indicating excellent barrier properties. Additionally, the coating achieved complete (100%) degradation of methylene blue (MB) within 30 min under visible light. Density Functional Theory (DFT) calculations provide deeper insights into the bonding mechanisms and interaction stability between PHEN, 2-IMD, and the PEO layer on the Mg alloy and MB dye. These findings confirmed the enhanced performance of the hybrid coating in both corrosion resistance and photocatalytic applications.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"28 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-06DOI: 10.1016/j.jma.2024.11.025
Yiyi Wang, Zhenfeng Guan, Yinggan Zhang, Baihua Qu, Baisheng Sa, Xiaoyuan Zhou, Jingfeng Wang, Dong-Liang Peng, Qingshui Xie, Fusheng Pan
Magnesium-lithium hybrid batteries (MLHBs) have gained increasing attention due to their combined advantages of rapid ion insertion/extraction cathode and magnesium metal anode. Herein, SnS2-SPAN hybrid cathode with strong C-Sn bond and rich defects is ingeniously constructed to realize Mg2+/Li+ co-intercalation. The physical and chemical double-confinement synergistic engineering of sulfurized polyacrylonitrile can suppress the agglomeration of SnS2 nanoparticles and the volume expansion, simultaneously promote charge transfer and enhance structural stability. The introduced abundant sulfur vacancies provide more active sites for Mg2+/Li+ co-intercalation. Meanwhile, the beneficial effects of rich sulfur defects and C-Sn bond on enhanced electrochemical properties are further evidenced by density-functional theory (DFT) calculations. Therefore, compared with pristine SnS2, SnS2-SPAN cathode displays high specific capacity (218 mAh g−1 at 0.5 A g−1 over 700 cycles) and ultra-long cycling life (101 mAh g−1 at 5 A g−1 up to 28,000 cycles). And a high energy density of 307 Wh kg−1 can be realized by the SnS2-SPAN//Mg pouch cell. Such elaborate and simple design supplies a reference for the exploitation of advanced cathode materials with excellent electrochemical properties for MLHBs.
镁锂混合电池由于具有快速离子插入/提取阴极和镁金属阳极的优点而受到越来越多的关注。本文巧妙地构建了具有强C-Sn键和丰富缺陷的SnS2-SPAN杂化阴极，实现了Mg2+/Li+共插层。硫化聚丙烯腈的物理和化学双约束协同工程可以抑制SnS2纳米颗粒的团聚和体积膨胀，同时促进电荷转移，增强结构稳定性。引入的丰富的硫空位为Mg2+/Li+共插层提供了更多的活性位点。同时，密度泛函理论（DFT）进一步证明了富硫缺陷和C-Sn键对电化学性能增强的有利影响。因此，与原始SnS2相比，SnS2- span阴极具有高比容量（在0.5 A g−1下超过700次循环218 mAh g−1）和超长循环寿命（在5 A g−1下高达28,000次循环101 mAh g−1）。SnS2-SPAN//Mg袋状电池可实现307 Wh kg−1的高能量密度。这种精巧而简单的设计为开发具有优异电化学性能的新型mlhb正极材料提供了参考。
{"title":"Li+/Mg2+ co-intercalation SnS2-SPAN cathode for super-stable magnesium-based batteries","authors":"Yiyi Wang, Zhenfeng Guan, Yinggan Zhang, Baihua Qu, Baisheng Sa, Xiaoyuan Zhou, Jingfeng Wang, Dong-Liang Peng, Qingshui Xie, Fusheng Pan","doi":"10.1016/j.jma.2024.11.025","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.025","url":null,"abstract":"Magnesium-lithium hybrid batteries (MLHBs) have gained increasing attention due to their combined advantages of rapid ion insertion/extraction cathode and magnesium metal anode. Herein, SnS<sub>2</sub>-SPAN hybrid cathode with strong C-Sn bond and rich defects is ingeniously constructed to realize Mg<sup>2+</sup>/Li<sup>+</sup> co-intercalation. The physical and chemical double-confinement synergistic engineering of sulfurized polyacrylonitrile can suppress the agglomeration of SnS<sub>2</sub> nanoparticles and the volume expansion, simultaneously promote charge transfer and enhance structural stability. The introduced abundant sulfur vacancies provide more active sites for Mg<sup>2+</sup>/Li<sup>+</sup> co-intercalation. Meanwhile, the beneficial effects of rich sulfur defects and C-Sn bond on enhanced electrochemical properties are further evidenced by density-functional theory (DFT) calculations. Therefore, compared with pristine SnS<sub>2</sub>, SnS<sub>2</sub>-SPAN cathode displays high specific capacity (218 mAh g<sup>−1</sup> at 0.5 A g<sup>−1</sup> over 700 cycles) and ultra-long cycling life (101 mAh g<sup>−1</sup> at 5 A g<sup>−1</sup> up to 28,000 cycles). And a high energy density of 307 Wh kg<sup>−1</sup> can be realized by the SnS<sub>2</sub>-SPAN//Mg pouch cell. Such elaborate and simple design supplies a reference for the exploitation of advanced cathode materials with excellent electrochemical properties for MLHBs.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"84 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-05DOI: 10.1016/j.jma.2024.11.028
Meng Cheng, Xigang Liang, Lihua Cui, Dongyan Guan, Yang Qu, Jianwu Zhao, Kai Guan
Mg-based materials have potential applications in the field of orthopedics owing to their good biodegradability, biocompatibility, and bone-inducing properties. However, during the early application process, their major drawback was rapid degradation rate, which limited their clinical application. Nanoparticles can effectively reinforce the mechanical strength and corrosion resistance of Mg matrices, and different nanoparticles can be selected to achieve different biological functions. Therefore, Mg-based nanocomposites have emerged as a versatile class of degradable implant materials with broad clinical potential. This review summarizes the research progress of Mg-based orthopedic implants, mainly including the reinforcement mechanism of nanoparticles on Mg-based materials, the effects and biological functions of different nanoparticle enhancers, surface modification, and the application of new manufacturing technologies. Furthermore, the degradation process of Mg-based materials and the biological functions of magnesium ion (Mg2+) during the degradation process are discussed in detail. We focused on the biological mechanisms through which Mg2+ promotes bone and vascular formation and inhibits osteoclasts by regulating the immune microenvironment or multiple signaling pathways. Finally, the clinical application of Mg-based orthopedic implants are introduced and the future research directions of Mg-based nanocomposites are discussed.
{"title":"Magnesium-based nanocomposites for orthopedic applications: A review","authors":"Meng Cheng, Xigang Liang, Lihua Cui, Dongyan Guan, Yang Qu, Jianwu Zhao, Kai Guan","doi":"10.1016/j.jma.2024.11.028","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.028","url":null,"abstract":"Mg-based materials have potential applications in the field of orthopedics owing to their good biodegradability, biocompatibility, and bone-inducing properties. However, during the early application process, their major drawback was rapid degradation rate, which limited their clinical application. Nanoparticles can effectively reinforce the mechanical strength and corrosion resistance of Mg matrices, and different nanoparticles can be selected to achieve different biological functions. Therefore, Mg-based nanocomposites have emerged as a versatile class of degradable implant materials with broad clinical potential. This review summarizes the research progress of Mg-based orthopedic implants, mainly including the reinforcement mechanism of nanoparticles on Mg-based materials, the effects and biological functions of different nanoparticle enhancers, surface modification, and the application of new manufacturing technologies. Furthermore, the degradation process of Mg-based materials and the biological functions of magnesium ion (Mg<sup>2+</sup>) during the degradation process are discussed in detail. We focused on the biological mechanisms through which Mg<sup>2+</sup> promotes bone and vascular formation and inhibits osteoclasts by regulating the immune microenvironment or multiple signaling pathways. Finally, the clinical application of Mg-based orthopedic implants are introduced and the future research directions of Mg-based nanocomposites are discussed.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"9 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-05DOI: 10.1016/j.jma.2024.11.014
Ling Liu, Tuo En Liu, Tan To Cheung
Biliary system, which is responsible for transporting bile from the liver into the intestine, is commonly damaged by inflammation or tumors eventually causing liver failure or death. The implantation of biliary stents can effectively alleviate both benign and malignant biliary strictures, but the plastic and metal stents that are currently used cannot degrade and nearly has no beneficial biological effects, therefore their long-term service can result into inflammation, the formation of sludges and re-obstruction of bile duct. In recent years, magnesium (Mg) metal has been received increasing attention in the field of biomedical application due to its excellent biocompatibility, adequate mechanical properties, biodegradability and other advantages, such as anti-inflammatory and anti-tumor properties. The research on biliary stents made of magnesium metals (BSMM) has also made significant progress and a series of experiments in vitro and vivo has proved their possibility. However, there are still some problems holding back BSMM's clinical use, including rapid corrosion rate and potential harmful reaction. In this review, we would summarize the current research of BSMM, evaluate their clinical benefits, find the choke points, and discuss the solving method.
{"title":"A review of biodegradable biliary stents made of magnesium metals: Current progress and future trends","authors":"Ling Liu, Tuo En Liu, Tan To Cheung","doi":"10.1016/j.jma.2024.11.014","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.014","url":null,"abstract":"Biliary system, which is responsible for transporting bile from the liver into the intestine, is commonly damaged by inflammation or tumors eventually causing liver failure or death. The implantation of biliary stents can effectively alleviate both benign and malignant biliary strictures, but the plastic and metal stents that are currently used cannot degrade and nearly has no beneficial biological effects, therefore their long-term service can result into inflammation, the formation of sludges and re-obstruction of bile duct. In recent years, magnesium (Mg) metal has been received increasing attention in the field of biomedical application due to its excellent biocompatibility, adequate mechanical properties, biodegradability and other advantages, such as anti-inflammatory and anti-tumor properties. The research on biliary stents made of magnesium metals (BSMM) has also made significant progress and a series of experiments in vitro and vivo has proved their possibility. However, there are still some problems holding back BSMM's clinical use, including rapid corrosion rate and potential harmful reaction. In this review, we would summarize the current research of BSMM, evaluate their clinical benefits, find the choke points, and discuss the solving method.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"27 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142776639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-05DOI: 10.1016/j.jma.2024.11.030
Hafiz Muhammad Rehan Tariq, Umer Masood Chaudry, Muhammad Ishtiaq, Minki Kim, Mansoor Ali, Tea-Sung Jun
This study explores the influence of Al addition on the microstructure, texture and mechanical deformation behavior of Mg-xAl-1Zn-1Ca (x = 1, 2 wt.%) alloy (referred as AZX211 and AZX311, respectively). Tensile tests were performed at room (24 °C, RT) and cryogenic temperature (-150 °C, CT) to probe the dislocation and twinning evolution and its consequent effect on the strength, ductility and hardening characteristics. The results revealed that AZX311 exhibited an outstanding combination of superior strength and excellent ductility at both temperatures. This unique balance of high tensile strength and consistent ductility outperforms previously documented magnesium alloys, positioning AZX311 as an ideal material for applications that demand both robust mechanical properties and reliable ductility, particularly under low-temperature conditions. The exceptional strength at cryogenic temperatures in this alloy is attributed to the synergistic effect of dislocation strengthening and boundary strengthening, where the increased barriers to dislocation movement lead to significant hardening. The presence of nano-stacking faults and greater activation of pyramidal slip, along with their interactions, result in a substantial increase in tensile strength while maintaining ductility at cryogenic temperature making it a suitable fit for cryogenic applications.
{"title":"Effect of Al addition on the room and cryogenic temperature deformation of Mg-xAl-1Zn-1Ca alloy (x = 1, 2 wt.%)","authors":"Hafiz Muhammad Rehan Tariq, Umer Masood Chaudry, Muhammad Ishtiaq, Minki Kim, Mansoor Ali, Tea-Sung Jun","doi":"10.1016/j.jma.2024.11.030","DOIUrl":"https://doi.org/10.1016/j.jma.2024.11.030","url":null,"abstract":"This study explores the influence of Al addition on the microstructure, texture and mechanical deformation behavior of Mg-xAl-1Zn-1Ca (<em>x</em> = 1, 2 wt.%) alloy (referred as AZX211 and AZX311, respectively). Tensile tests were performed at room (24 °C, RT) and cryogenic temperature (-150 °C, CT) to probe the dislocation and twinning evolution and its consequent effect on the strength, ductility and hardening characteristics. The results revealed that AZX311 exhibited an outstanding combination of superior strength and excellent ductility at both temperatures. This unique balance of high tensile strength and consistent ductility outperforms previously documented magnesium alloys, positioning AZX311 as an ideal material for applications that demand both robust mechanical properties and reliable ductility, particularly under low-temperature conditions. The exceptional strength at cryogenic temperatures in this alloy is attributed to the synergistic effect of dislocation strengthening and boundary strengthening, where the increased barriers to dislocation movement lead to significant hardening. The presence of nano-stacking faults and greater activation of pyramidal slip, along with their interactions, result in a substantial increase in tensile strength while maintaining ductility at cryogenic temperature making it a suitable fit for cryogenic applications.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"8 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142782775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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