Thermotherapy, renowned for its non-invasive alleviation of musculoskeletal pain, faces constraints due to the scarcity of flexible and lightweight wearable heating solutions. In this study, we introduce an innovative flexible wearable film designed for effective thermotherapy. The film is engineered by in-situ immobilization of copper sulfide (CuS) nanoparticles onto a bicomponent PET@PE nonwoven fabric, subsequently enhanced through a straightforward hot-pressing process. This method results in an all-in-one integrated PET@PE/CuS film that possesses intrinsic self-enhancement and remarkable photothermal conversion capabilities. Upon exposure to near-infrared (NIR) laser, infrared (IR) therapeutic light, or simulated sunlight, the film maintains stable and precisely regulated temperatures, catering to the optimal thermotherapy temperature range. Its high mechanical robustness and chemical stability, as evidenced by rigorous mechanical and chemical testing, ensure the film's suitability and long-term serviceability in wearable thermotherapy applications. Our study provides an affordable and sustainable strategy for the development of comfortable wearable thermotherapy devices, offering a promising avenue for pain management and rehabilitation.
{"title":"In-Situ anchoring of nano-CuS onto PET@PE nonwoven fabrics: developing flexible, robust, and all-in-one integrated thermotherapy films","authors":"Jiahui Fan, Yuheng Song, Zhou Sha, Hongchuang Li, Weiwei Zuo, Xiang Fei, Meifang Zhu","doi":"10.1016/j.jmst.2024.11.049","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.11.049","url":null,"abstract":"Thermotherapy, renowned for its non-invasive alleviation of musculoskeletal pain, faces constraints due to the scarcity of flexible and lightweight wearable heating solutions. In this study, we introduce an innovative flexible wearable film designed for effective thermotherapy. The film is engineered by <em>in-situ</em> immobilization of copper sulfide (CuS) nanoparticles onto a bicomponent PET@PE nonwoven fabric, subsequently enhanced through a straightforward hot-pressing process. This method results in an all-in-one integrated PET@PE/CuS film that possesses intrinsic self-enhancement and remarkable photothermal conversion capabilities. Upon exposure to near-infrared (NIR) laser, infrared (IR) therapeutic light, or simulated sunlight, the film maintains stable and precisely regulated temperatures, catering to the optimal thermotherapy temperature range. Its high mechanical robustness and chemical stability, as evidenced by rigorous mechanical and chemical testing, ensure the film's suitability and long-term serviceability in wearable thermotherapy applications. Our study provides an affordable and sustainable strategy for the development of comfortable wearable thermotherapy devices, offering a promising avenue for pain management and rehabilitation.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"114 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142908417","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 : 2024-12-30DOI: 10.1016/j.jmst.2024.11.047
Tianxu Qiu, Xiwei Cui, Ruochong Wang, Li Wang, Lifen Deng, Yong Liu
The interfacial strength has a significant impact on mechanical properties of diamond composites. In this work, polycrystalline diamonds (PCDs) with medium-entropy alloy (MEA) binders and traditional Co binder were prepared at high-pressure and high-temperature. Microstructures and interfacial strengths are carefully characterized using TEM. The results show that diamond particles are well bonded to form skeletons in all PCDs. The interfaces between MEA binders and diamond are fully coherent. Due to the effect of Cr element and Cr-carbide, the PCD with Co50Ni40Fe10-Cr3C2 binder exhibits the highest interfacial bonding strength (1176.6 MPa) and highest fracture toughness (9.97 MPa m1/2). The mechanical analyses indicate that both the interface and diamond skeleton have important effects on the fracture toughness of PCD. The interface with a higher bonding strength, a higher engineering strain and a higher elastic modulus can endure more stress, thereby improving the fracture toughness.
{"title":"Revealing effect of interfacial bonding on fracture toughness in polycrystalline diamond with medium-entropy alloy binder","authors":"Tianxu Qiu, Xiwei Cui, Ruochong Wang, Li Wang, Lifen Deng, Yong Liu","doi":"10.1016/j.jmst.2024.11.047","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.11.047","url":null,"abstract":"The interfacial strength has a significant impact on mechanical properties of diamond composites. In this work, polycrystalline diamonds (PCDs) with medium-entropy alloy (MEA) binders and traditional Co binder were prepared at high-pressure and high-temperature. Microstructures and interfacial strengths are carefully characterized using TEM. The results show that diamond particles are well bonded to form skeletons in all PCDs. The interfaces between MEA binders and diamond are fully coherent. Due to the effect of Cr element and Cr-carbide, the PCD with Co<sub>50</sub>Ni<sub>40</sub>Fe<sub>10</sub>-Cr<sub>3</sub>C<sub>2</sub> binder exhibits the highest interfacial bonding strength (1176.6 MPa) and highest fracture toughness (9.97 MPa m<sup>1/2</sup>). The mechanical analyses indicate that both the interface and diamond skeleton have important effects on the fracture toughness of PCD. The interface with a higher bonding strength, a higher engineering strain and a higher elastic modulus can endure more stress, thereby improving the fracture toughness.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"4 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142901593","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 : 2024-12-27DOI: 10.1016/j.jmst.2024.11.043
R. Zhang, S.Z. Zhu, Z.Y. Liu, Y.B. Ke, D. Wang, B.L. Xiao, Z.Y. Ma
Non-isothermal aging (NIA) treatments have presented significant advantages in improving the comprehensive performance and aging hardening efficiency of the 7000 series aluminum alloys, but there is no attention paid to their composites. This study takes a linear heating aging process as an example to reveal the precipitation behaviors of a 15 vol.% SiC/7085Al composite as well as its impact on mechanical properties using differential scanning calorimetry, transmission electron microscopy, small-angle neutron scattering, hardness measurements, and tensile testing. The results indicated the formation of GP (I, II) zones, η' and η precipitates in sequence, leading to the hardness and strength initially increasing and then decreasing with rising NIA temperatures. The maximums were reached at 183 °C, corresponding to the appearance of η' precipitates in large quantities. Owing to the rapid temperature rise during the NIA process, the precipitates entered the coarsening and redissolution stage before they were entirely formed, resulting in reduced peak strength compared to the T6 treatment. The composite exhibited a more significant reduction in strength than the 7085Al alloy because: (i) the annihilation of vacancies suppressed the formation of GPII zones, thereby weakening their transition to η' precipitates; (ii) quenching dislocations promoted the coarsening of precipitates. An improved NIA process, incorporating both heating and cooling aging treatments, was effectively designed with the assistance of in-situ SANS technology to address this issue, which allows for achieving strength comparable to that after the T6 treatment with only 15% of the aging time consumption. This research fills the gap in investigating the NIA precipitation behaviors of aluminum matrix composites, providing guidance for the formulation of NIA schedules.
{"title":"Microstructure evolution and precipitation strengthening behaviors of non-isothermal aged SiC/7xxxAl composite","authors":"R. Zhang, S.Z. Zhu, Z.Y. Liu, Y.B. Ke, D. Wang, B.L. Xiao, Z.Y. Ma","doi":"10.1016/j.jmst.2024.11.043","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.11.043","url":null,"abstract":"Non-isothermal aging (NIA) treatments have presented significant advantages in improving the comprehensive performance and aging hardening efficiency of the 7000 series aluminum alloys, but there is no attention paid to their composites. This study takes a linear heating aging process as an example to reveal the precipitation behaviors of a 15 vol.% SiC/7085Al composite as well as its impact on mechanical properties using differential scanning calorimetry, transmission electron microscopy, small-angle neutron scattering, hardness measurements, and tensile testing. The results indicated the formation of GP (I, II) zones, η' and η precipitates in sequence, leading to the hardness and strength initially increasing and then decreasing with rising NIA temperatures. The maximums were reached at 183 °C, corresponding to the appearance of η' precipitates in large quantities. Owing to the rapid temperature rise during the NIA process, the precipitates entered the coarsening and redissolution stage before they were entirely formed, resulting in reduced peak strength compared to the T6 treatment. The composite exhibited a more significant reduction in strength than the 7085Al alloy because: (i) the annihilation of vacancies suppressed the formation of GPII zones, thereby weakening their transition to η' precipitates; (ii) quenching dislocations promoted the coarsening of precipitates. An improved NIA process, incorporating both heating and cooling aging treatments, was effectively designed with the assistance of in-situ SANS technology to address this issue, which allows for achieving strength comparable to that after the T6 treatment with only 15% of the aging time consumption. This research fills the gap in investigating the NIA precipitation behaviors of aluminum matrix composites, providing guidance for the formulation of NIA schedules.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"32 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142888242","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}
High-strength Fe-Mn-Al-C-Ni low-density steels are highly desirable in lightweight transportation, safe infrastructure, and advanced energy applications. However, these steels generally suffer from limited ductility owing to the formation of coarse B2 particles at grain boundaries. In this study, we proposed a strategy to introduce copious intragranular B2 nanoprecipitates within fully-recrystallized fine austenitic grains in a Fe-26Mn-11Al-0.9C-5Ni ultralight steel by a simple cold rolling and annealing process. Compared with steel where B2 particles are mainly distributed at grain boundaries, the yield strength and ultimate tensile strength of this steel increased from 768 MPa and 1100 MPa to 954 MPa and 1337 MPa, respectively, whereas the total elongation increased from 38% to 50%. The higher yield strength was primarily due to the synergistic strengthening effect of intragranular B2 nanoprecipitates and grain refinement. The excellent ductility and sustained work hardening were mainly attributed to the strong dislocation storage capability mediated by the intragranular B2 nanoprecipitates and the greater dynamic slip band refinement strengthening effect. Hence, the achievement of copious intragranular B2 nanoprecipitation in fully recrystallized ultralight steel offers an effective pathway for developing lightweight materials with high strength and large ductility.
{"title":"Copious intragranular B2 nanoprecipitation mediated high strength and large ductility in a fully recrystallized ultralight steel","authors":"Xiaoxiao Geng, Junheng Gao, Yuhe Huang, Shuize Wang, Haitao Zhao, Honghui Wu, Chaolei Zhang, Xinping Mao","doi":"10.1016/j.jmst.2024.12.013","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.013","url":null,"abstract":"High-strength Fe-Mn-Al-C-Ni low-density steels are highly desirable in lightweight transportation, safe infrastructure, and advanced energy applications. However, these steels generally suffer from limited ductility owing to the formation of coarse B2 particles at grain boundaries. In this study, we proposed a strategy to introduce copious intragranular B2 nanoprecipitates within fully-recrystallized fine austenitic grains in a Fe-26Mn-11Al-0.9C-5Ni ultralight steel by a simple cold rolling and annealing process. Compared with steel where B2 particles are mainly distributed at grain boundaries, the yield strength and ultimate tensile strength of this steel increased from 768 MPa and 1100 MPa to 954 MPa and 1337 MPa, respectively, whereas the total elongation increased from 38% to 50%. The higher yield strength was primarily due to the synergistic strengthening effect of intragranular B2 nanoprecipitates and grain refinement. The excellent ductility and sustained work hardening were mainly attributed to the strong dislocation storage capability mediated by the intragranular B2 nanoprecipitates and the greater dynamic slip band refinement strengthening effect. Hence, the achievement of copious intragranular B2 nanoprecipitation in fully recrystallized ultralight steel offers an effective pathway for developing lightweight materials with high strength and large ductility.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"310 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142888048","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 : 2024-12-27DOI: 10.1016/j.jmst.2024.11.045
Shuaiyang Liu, Jinyu Zhang, Hui Wang, Conghui Zhang, Gang Liu, Jun Sun
Grain boundary hardening is an important mechanism for improving the strength and ductility of metal materials. However, the industrial fabrication of fine-grained FeCrAl alloys was limited by the interaction between the recrystallization and precipitation. Here, we report the facile mass production of fine-grained FeCrAl alloys by Si alloying and manipulation of the recrystallization process through introducing heterogeneous Si-rich Laves precipitates. The pre-precipitation of heterogeneous Laves phase not only promotes subsequent recrystallization grain nucleation by the PSN (Particles simultaneous nucleation) and SIBM (Strain-induced grain boundary migration) mechanisms, but also provides resistance to grain growth by the Zener pinning mechanism. Moreover, continuous grain refinement can be achieved by intensifying the heterogeneous Laves precipitates through decreasing their formation energy. This approach enables the preparation of a fully recrystallized fine-grain structure with a grain size of 4.6 µm without the introduction of segregated boundaries. Consequently, an unprecedented synergy enhancement of strength (σy = 625 MPa, σuts = 867 MPa,) and ductility (εu = 13.8%) is achieved in the fine-grain structured FeCrAl alloys compared with the coarse grain counterpart. The experimental results prove that the proposed strategy is appropriate for developing high strength and ductility FeCrAl alloys, and further boosting its potential applications as accident-tolerant-fuel cladding in nuclear reactors. In addition, this grain-refinement strategy should be extendable to other alloy systems, where there is a significant difference between precipitation and recrystallization temperatures.
{"title":"A novel strategy for developing fine-grained FeCrAl alloys with high strength and ductility","authors":"Shuaiyang Liu, Jinyu Zhang, Hui Wang, Conghui Zhang, Gang Liu, Jun Sun","doi":"10.1016/j.jmst.2024.11.045","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.11.045","url":null,"abstract":"Grain boundary hardening is an important mechanism for improving the strength and ductility of metal materials. However, the industrial fabrication of fine-grained FeCrAl alloys was limited by the interaction between the recrystallization and precipitation. Here, we report the facile mass production of fine-grained FeCrAl alloys by Si alloying and manipulation of the recrystallization process through introducing heterogeneous Si-rich Laves precipitates. The pre-precipitation of heterogeneous Laves phase not only promotes subsequent recrystallization grain nucleation by the PSN (Particles simultaneous nucleation) and SIBM (Strain-induced grain boundary migration) mechanisms, but also provides resistance to grain growth by the Zener pinning mechanism. Moreover, continuous grain refinement can be achieved by intensifying the heterogeneous Laves precipitates through decreasing their formation energy. This approach enables the preparation of a fully recrystallized fine-grain structure with a grain size of 4.6 µm without the introduction of segregated boundaries. Consequently, an unprecedented synergy enhancement of strength (<em>σ</em><sub>y</sub> = 625 MPa, <em>σ</em><sub>uts</sub> = 867 MPa,) and ductility (<em>ε</em><sub>u</sub> = 13.8%) is achieved in the fine-grain structured FeCrAl alloys compared with the coarse grain counterpart. The experimental results prove that the proposed strategy is appropriate for developing high strength and ductility FeCrAl alloys, and further boosting its potential applications as accident-tolerant-fuel cladding in nuclear reactors. In addition, this grain-refinement strategy should be extendable to other alloy systems, where there is a significant difference between precipitation and recrystallization temperatures.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"42 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142888915","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 : 2024-12-27DOI: 10.1016/j.jmst.2024.11.046
Jun Li, Kun Luo, Qi An
The plastic deformation of semiconductors, a process critical to their mechanical and electronic properties, involves various mechanisms such as dislocation motion and phase transition. Here, we systematically examined the temperature-dependent Peierls stress for 30° and 90° partial dislocations in cadmium telluride (CdTe), using a combination of molecular statics and molecular dynamics simulations with a machine-learning force field, as well as density function theory simulations. Our findings reveal that the 0 K Peierls stresses for these partial dislocations in CdTe are relatively low, ranging from 0.52 GPa to 1.46 GPa, due to its significant ionic bonding characteristics. Notably, in the CdTe system containing either a 30°Cd-core or 90° Te-core partial dislocation, a phase transition from the zinc-blende phase to the -Sn-like phase is favored over dislocation motion. This suggests a competitive relationship between these two mechanisms, driven by the bonding characteristics within the dislocation core and the relatively low phase transition stress of ∼1.00 GPa. Furthermore, we observed a general trend wherein the Peierls stress for partial dislocations in CdTe exhibits a temperature dependence, which decreases with increasing temperature, becoming lower than the phase transition stress at elevated temperatures. Consequently, the dominant deformation mechanism in CdTe shifts from solid-state phase transition at low temperatures to dislocation motion at high temperatures. This investigation uncovers a compelling interplay between dislocation motion and phase transition in the plastic deformation of CdTe, offering profound insights into the mechanical behavior and electronic performance of CdTe and other II–VI semiconductors.
半导体的塑性变形是决定其机械和电子性能的关键过程，涉及多种机制，如位错运动和相变。在这里，我们系统地研究了碲化镉（CdTe）中30°和90°部分位错的温度依赖的Peierls应力，结合了分子静力学和分子动力学模拟以及机器学习力场，以及密度函数理论模拟。我们的研究结果表明，由于其显著的离子键特性，CdTe中这些部分位错的0 K peerls应力相对较低，范围为0.52 ~ 1.46 GPa。值得注意的是，在含有30°cd核或90°te核部分位错的CdTe体系中，从锌-闪锌矿相到β- β- sn相的相变比位错运动更有利。这表明这两种机制之间存在竞争关系，这是由位错核心内的键合特性和相对较低的相变应力（~ 1.00 GPa）驱动的。此外，我们观察到一个普遍趋势，即CdTe中部分位错的Peierls应力表现出温度依赖性，随着温度的升高而降低，在高温下低于相变应力。因此，CdTe的主要变形机制由低温固相转变为高温位错运动。本研究揭示了CdTe塑性变形中位错运动和相变之间的相互作用，为CdTe和其他II-VI半导体的力学行为和电子性能提供了深刻的见解。
{"title":"Temperature-dependent competition between dislocation motion and phase transition in CdTe","authors":"Jun Li, Kun Luo, Qi An","doi":"10.1016/j.jmst.2024.11.046","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.11.046","url":null,"abstract":"The plastic deformation of semiconductors, a process critical to their mechanical and electronic properties, involves various mechanisms such as dislocation motion and phase transition. Here, we systematically examined the temperature-dependent Peierls stress for 30° and 90° partial dislocations in cadmium telluride (CdTe), using a combination of molecular statics and molecular dynamics simulations with a machine-learning force field, as well as density function theory simulations. Our findings reveal that the 0 K Peierls stresses for these partial dislocations in CdTe are relatively low, ranging from 0.52 GPa to 1.46 GPa, due to its significant ionic bonding characteristics. Notably, in the CdTe system containing either a 30°Cd-core or 90° Te-core partial dislocation, a phase transition from the zinc-blende phase to the <span><span style=\"\"></span><span data-mathml='<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi is=\"true\">&#x3B2;</mi></math>' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"><svg aria-hidden=\"true\" focusable=\"false\" height=\"2.432ex\" role=\"img\" style=\"vertical-align: -0.582ex;\" viewbox=\"0 -796.9 573.5 1047.3\" width=\"1.332ex\" 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\"><use xlink:href=\"#MJMATHI-3B2\"></use></g></g></svg><span role=\"presentation\"><math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi is=\"true\">β</mi></math></span></span><script type=\"math/mml\"><math><mi is=\"true\">β</mi></math></script></span>-Sn-like phase is favored over dislocation motion. This suggests a competitive relationship between these two mechanisms, driven by the bonding characteristics within the dislocation core and the relatively low phase transition stress of ∼1.00 GPa. Furthermore, we observed a general trend wherein the Peierls stress for partial dislocations in CdTe exhibits a temperature dependence, which decreases with increasing temperature, becoming lower than the phase transition stress at elevated temperatures. Consequently, the dominant deformation mechanism in CdTe shifts from solid-state phase transition at low temperatures to dislocation motion at high temperatures. This investigation uncovers a compelling interplay between dislocation motion and phase transition in the plastic deformation of CdTe, offering profound insights into the mechanical behavior and electronic performance of CdTe and other II–VI semiconductors.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"97 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142888049","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}
The traditional inflexible electromagnetic interference (EMI) shielding materials have poor adaptability to wearable and portable flexible electronic devices due to their shortcomings such as brittleness and difficulty in machinability. As an optimized alternative, the conductive polymer composites (CPCs) constructed by integrating MXene and polymer have become one of the most promising EMI shielding materials. To cope with the more harsh application conditions, the processing-structure-property relationship of MXene/polymer EMI shielding composites urgently needs to be clarified. In this review, the EMI shielding mechanism and theory of CPCs are first outlined. Then, the recent advances in processing strategies for MXene/polymer EMI shielding composites with different structures are comprehensively summarized, including layered structure, segregated structure, and porous structure. Next, the multifunctionality of MXene/polymer EMI shielding composites in hydrophobicity, flame retardancy, thermal conductivity, infrared thermal camouflage, electrothermal conversion, photothermal conversion, and sensing function, is systematically introduced. Finally, the prospects and challenges for the future development and application of multifunctional MXene/polymer EMI shielding composites are discussed. This review aims to put forward effective guidance for fabricating intelligent, adaptable, and integrated MXene/polymer EMI shielding composites, thus promoting the upgrading of advanced MXene-based CPCs.
{"title":"Integration of MXene and polymer: Unlocking the full potential of multifunctional composites for electromagnetic interference shielding","authors":"Meng Zhou, Shuo Zhang, Li Zhang, Ying Chen, Xinxin Sheng, Xinya Zhang","doi":"10.1016/j.jmst.2024.12.011","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.011","url":null,"abstract":"The traditional inflexible electromagnetic interference (EMI) shielding materials have poor adaptability to wearable and portable flexible electronic devices due to their shortcomings such as brittleness and difficulty in machinability. As an optimized alternative, the conductive polymer composites (CPCs) constructed by integrating MXene and polymer have become one of the most promising EMI shielding materials. To cope with the more harsh application conditions, the processing-structure-property relationship of MXene/polymer EMI shielding composites urgently needs to be clarified. In this review, the EMI shielding mechanism and theory of CPCs are first outlined. Then, the recent advances in processing strategies for MXene/polymer EMI shielding composites with different structures are comprehensively summarized, including layered structure, segregated structure, and porous structure. Next, the multifunctionality of MXene/polymer EMI shielding composites in hydrophobicity, flame retardancy, thermal conductivity, infrared thermal camouflage, electrothermal conversion, photothermal conversion, and sensing function, is systematically introduced. Finally, the prospects and challenges for the future development and application of multifunctional MXene/polymer EMI shielding composites are discussed. This review aims to put forward effective guidance for fabricating intelligent, adaptable, and integrated MXene/polymer EMI shielding composites, thus promoting the upgrading of advanced MXene-based CPCs.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"62 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142887915","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 : 2024-12-26DOI: 10.1016/j.jmst.2024.12.008
Xuan Luo, Xianneng Wang, Yiping Xia, Guilin Wu, Yao Cheng, Tianbo Yu, Peijie Yan, Yunchang Xin, Xiaoxu Huang
Mechanical properties of Mg-3Gd (wt.%) samples with average grain sizes ranging from 3 to 45 μm were characterized by room temperature tensile test. A reversal of the trade-off, simultaneously high yield strength and large tensile elongation, was observed in the fine-grained samples. The microstructures and hardening response were analyzed in terms of the viewpoint of strain evolution, including local strain evolution by tensile digital image correlation strain measurement, and lattice strain by using synchrotron-based in-situ high energy X-ray diffraction technique. The dislocation-based deformation mechanisms were investigated to underpin the microstructural origin of the yield point phenomenon and enhancement in work-hardening. The occurrence of the yield point phenomenon represented by a yield drop and propagation of the Lüders band is related to the absence of mobile dislocations at an early stage and to the slip transmission between the adjacent grain. The extraordinary work-hardening enhancement over an extended range can be ascribed mainly to the increases in dislocation multiplication and accumulation capabilities by the activation and interaction of multiple slip systems including <a> and <c+a> types. These results contribute to the design of strong and ductile Mg alloys.
采用室温拉伸试验对平均晶粒尺寸为3 ~ 45 μm的Mg-3Gd （wt.%）试样的力学性能进行了表征。相反的权衡，同时高屈服强度和大拉伸伸长率，观察到细粒样品。从应变演化的角度分析了微观组织和硬化响应，包括通过拉伸数字图像相关应变测量的局部应变演化和基于同步辐射的原位高能x射线衍射技术的点阵应变。研究了基于位错的变形机制，以支持屈服点现象和加工硬化强化的微观组织起源。以屈服下降和l德斯带扩展为代表的屈服点现象的出现与早期没有移动位错和相邻晶粒之间的滑移传递有关。在更大范围内的特殊加工硬化增强主要归因于位错倍增和积累能力的增加，这是由多个滑移系统的激活和相互作用引起的，包括<；和& lt; c + a>类型。这些结果有助于设计强韧性镁合金。
{"title":"On the microstructural origin of yield point phenomenon and high work-hardening response in fine-grained Mg-3Gd alloy","authors":"Xuan Luo, Xianneng Wang, Yiping Xia, Guilin Wu, Yao Cheng, Tianbo Yu, Peijie Yan, Yunchang Xin, Xiaoxu Huang","doi":"10.1016/j.jmst.2024.12.008","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.008","url":null,"abstract":"Mechanical properties of Mg-3Gd (wt.%) samples with average grain sizes ranging from 3 to 45 μm were characterized by room temperature tensile test. A reversal of the trade-off, simultaneously high yield strength and large tensile elongation, was observed in the fine-grained samples. The microstructures and hardening response were analyzed in terms of the viewpoint of strain evolution, including local strain evolution by tensile digital image correlation strain measurement, and lattice strain by using synchrotron-based in-situ high energy X-ray diffraction technique. The dislocation-based deformation mechanisms were investigated to underpin the microstructural origin of the yield point phenomenon and enhancement in work-hardening. The occurrence of the yield point phenomenon represented by a yield drop and propagation of the Lüders band is related to the absence of mobile dislocations at an early stage and to the slip transmission between the adjacent grain. The extraordinary work-hardening enhancement over an extended range can be ascribed mainly to the increases in dislocation multiplication and accumulation capabilities by the activation and interaction of multiple slip systems including <<em>a</em>> and <<em>c</em>+<em>a</em>> types. These results contribute to the design of strong and ductile Mg alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"3 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886805","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}
Metal-organic frameworks (MOFs) have been widely applied in the field of electromagnetic wave absorption (EMWA) on account of unique morphology, simple fabrication, and ultra-high porosity. Nevertheless, the facile method of protecting its structure from being destroyed remains challenging. Herein, we proposed a hydrothermal method combined with a carbonization strategy to construct the 0D/1D/2D Fe3C@NC@Mo2C/Fe3C composites. Owing to the incorporation of polydopamine (PDA), the carbon shell formed during high-temperature carbonization effectively protected the original MIL-88A rod-like structure, and the 2D Mo2C nano-sheets and 1D Fe3C nanoparticles were coated on the surface of 1D Fe3C nanorods. With the increase in carbonization temperature, the EMWA properties of the composites presented a trend of first increasing and then decreasing. Impressively, the composites (at 750 °C) exhibited praiseworthy EMWA performances with a minimum reflection loss value of −43.70 dB at 8.00 GHz, alongside a maximum effective absorption bandwidth of 6.08 GHz (11.20–17.28 GHz). Density functional theory calculations confirmed the distinctive charge distribution resulting from the heterointerface, which is beneficial to the polarization loss and conductive loss. As a result, the outstanding EMWA performance was credited to the distinctive hierarchical structure, appropriate impedance matching, numerous heterogeneous interfaces, and magnetic loss. Moreover, Radar cross-section calculations indicated that the composites have tremendous potential for practical application. Thus, this work may pave new avenues for designing high-performance and structure-controllable absorbing materials.
{"title":"Morphology engineering of MIL-88A-derived 0D/1D/2D nanocomposites toward wideband microwave absorption","authors":"Jie Mei, Juhua Luo, Tianyi Zhao, Shenyu Jiang, Yuhan Wu, Ziyang Dai, Yu Xie","doi":"10.1016/j.jmst.2024.12.012","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.012","url":null,"abstract":"Metal-organic frameworks (MOFs) have been widely applied in the field of electromagnetic wave absorption (EMWA) on account of unique morphology, simple fabrication, and ultra-high porosity. Nevertheless, the facile method of protecting its structure from being destroyed remains challenging. Herein, we proposed a hydrothermal method combined with a carbonization strategy to construct the 0D/1D/2D Fe<sub>3</sub>C@NC@Mo<sub>2</sub>C/Fe<sub>3</sub>C composites. Owing to the incorporation of polydopamine (PDA), the carbon shell formed during high-temperature carbonization effectively protected the original MIL-88A rod-like structure, and the 2D Mo<sub>2</sub>C nano-sheets and 1D Fe<sub>3</sub>C nanoparticles were coated on the surface of 1D Fe<sub>3</sub>C nanorods. With the increase in carbonization temperature, the EMWA properties of the composites presented a trend of first increasing and then decreasing. Impressively, the composites (at 750 °C) exhibited praiseworthy EMWA performances with a minimum reflection loss value of −43.70 dB at 8.00 GHz, alongside a maximum effective absorption bandwidth of 6.08 GHz (11.20–17.28 GHz). Density functional theory calculations confirmed the distinctive charge distribution resulting from the heterointerface, which is beneficial to the polarization loss and conductive loss. As a result, the outstanding EMWA performance was credited to the distinctive hierarchical structure, appropriate impedance matching, numerous heterogeneous interfaces, and magnetic loss. Moreover, Radar cross-section calculations indicated that the composites have tremendous potential for practical application. Thus, this work may pave new avenues for designing high-performance and structure-controllable absorbing materials.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"62 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886807","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}
Fluorescence-based corrosion detection is an emerging method for surveillance in the early stages of metal corrosion. It is valued for its great responsiveness, non-invasive nature, and capability of in-situ and simultaneous detection. This review paper presents a thorough and up-to-date review of fluorescence-based methods for detecting metal corrosion. It introduces the underlying principles of these detection methods, aligned with the corrosion processes of metals. The paper categorizes fluorescent indicators into those sensitive to pH changes and those responsive to metal ions, both serving as early indicators of corrosion. It also discusses the factors influencing the sensitivity of fluorescence detection and various methods of incorporating fluorescent indicators. Lastly, the paper outlines critical future directions for the betterment of fluorescence-based corrosion diagnosis.
{"title":"A review of advancement in fluorescence-based corrosion detection for metals and future prospects","authors":"Sharjeel Ahmed, Hongwei Shi, Mustehsin Ali, Imran Ali, Fuchun Liu, En-Hou Han","doi":"10.1016/j.jmst.2024.12.009","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.009","url":null,"abstract":"Fluorescence-based corrosion detection is an emerging method for surveillance in the early stages of metal corrosion. It is valued for its great responsiveness, non-invasive nature, and capability of in-situ and simultaneous detection. This review paper presents a thorough and up-to-date review of fluorescence-based methods for detecting metal corrosion. It introduces the underlying principles of these detection methods, aligned with the corrosion processes of metals. The paper categorizes fluorescent indicators into those sensitive to pH changes and those responsive to metal ions, both serving as early indicators of corrosion. It also discusses the factors influencing the sensitivity of fluorescence detection and various methods of incorporating fluorescent indicators. Lastly, the paper outlines critical future directions for the betterment of fluorescence-based corrosion diagnosis.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"12 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886806","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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