Pub Date : 2023-09-01DOI: 10.1080/21663831.2023.2250110
K. K. Anavadya, Uthirapathy Vijayalakshmi
Multifarious materials are used in the biomedical domain to relieve the distress of patients due to underlying diseases or injuries by replacing or augmenting any tissues or organs. Specific metallic substrates used as implants have the probability of failure due to corrosion resulting from direct contact with body fluid. Therefore, we aim to conduct a thorough review of numerous coatings currently available to prevent the implants from corroding. The coatings that are fabricated by various techniques are discussed for their effects on mechanical behaviour. It was deduced that the mechanical behaviour relied on the microstructure of the coating surface. Different surface treatment techniques of coatings offered different microstructures to the coatings. We meticulously review the mechanical and biological behaviour of coatings and this comprehensive literature review serves as evidence that the effective fabrication of an ideal coating has remained elusive for researchers, motivating an ongoing endeavour to attain this goal. IMPACT STATEMENT We meticulously review the mechanical and biological behaviour of coatings and this comprehensive literature review serves as evidence that the effective fabrication of an ideal coating along with discussions on biological characteristics shown by composites. Abbreviations: ALP, alkaline phosphatase activity, bFGF, basic fibroblast growth factor, CHAp, Carbonated Hap, CNT, carbon nanotubes, Ecorr, corrosion potential, ECM, extracellular matrix, EIS, Electrochemical Impedance Spectroscopy, EPD, electrophoretic deposition technique, F-Hap, fluorinated hydroxyapatite, f-MWCNT, functionalized multi-walled carbon nanotubes, GO, Graphene Oxide, Hap, hydroxyapatite, HAp/PE, hydroxyapatite/polyethylene, HOS, human osteosarcoma cells, Icorr, corrosion current, MWCNT, Multi-walled carbon nanotubes, PEO, plasma electrolyte oxidation, PLGA, poly(lactic-co-glycolic acid), PMMA, Poly(methyl methacrylate), PSZ, partially stabilized zirconia, rGO, reduced graphene oxide, SBF, Simulating body fluid, SWCNT, Single-walled carbon nanotubes, TCP, Tri calcium phosphate, TZP, tetragonal zirconia polycrystal, YSZ, Yttria-stabilized Zirconia, ZTA, zirconia toughened alumina GRAPHICAL ABSTRACT
{"title":"A comprehensive review of fabrication techniques and their impact on mechanical behaviour and osteoregenerative applications of bioactive inorganic substituents","authors":"K. K. Anavadya, Uthirapathy Vijayalakshmi","doi":"10.1080/21663831.2023.2250110","DOIUrl":"https://doi.org/10.1080/21663831.2023.2250110","url":null,"abstract":"Multifarious materials are used in the biomedical domain to relieve the distress of patients due to underlying diseases or injuries by replacing or augmenting any tissues or organs. Specific metallic substrates used as implants have the probability of failure due to corrosion resulting from direct contact with body fluid. Therefore, we aim to conduct a thorough review of numerous coatings currently available to prevent the implants from corroding. The coatings that are fabricated by various techniques are discussed for their effects on mechanical behaviour. It was deduced that the mechanical behaviour relied on the microstructure of the coating surface. Different surface treatment techniques of coatings offered different microstructures to the coatings. We meticulously review the mechanical and biological behaviour of coatings and this comprehensive literature review serves as evidence that the effective fabrication of an ideal coating has remained elusive for researchers, motivating an ongoing endeavour to attain this goal. IMPACT STATEMENT We meticulously review the mechanical and biological behaviour of coatings and this comprehensive literature review serves as evidence that the effective fabrication of an ideal coating along with discussions on biological characteristics shown by composites. Abbreviations: ALP, alkaline phosphatase activity, bFGF, basic fibroblast growth factor, CHAp, Carbonated Hap, CNT, carbon nanotubes, Ecorr, corrosion potential, ECM, extracellular matrix, EIS, Electrochemical Impedance Spectroscopy, EPD, electrophoretic deposition technique, F-Hap, fluorinated hydroxyapatite, f-MWCNT, functionalized multi-walled carbon nanotubes, GO, Graphene Oxide, Hap, hydroxyapatite, HAp/PE, hydroxyapatite/polyethylene, HOS, human osteosarcoma cells, Icorr, corrosion current, MWCNT, Multi-walled carbon nanotubes, PEO, plasma electrolyte oxidation, PLGA, poly(lactic-co-glycolic acid), PMMA, Poly(methyl methacrylate), PSZ, partially stabilized zirconia, rGO, reduced graphene oxide, SBF, Simulating body fluid, SWCNT, Single-walled carbon nanotubes, TCP, Tri calcium phosphate, TZP, tetragonal zirconia polycrystal, YSZ, Yttria-stabilized Zirconia, ZTA, zirconia toughened alumina GRAPHICAL ABSTRACT","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"821 - 855"},"PeriodicalIF":8.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44702005","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 : 2023-08-07DOI: 10.1080/21663831.2023.2243990
H. Ding, Selami Emanet, Yeh-Peng Chen, Shengmin Guo
This study examined the impact of transient pseudo high thermal conductivity to the fabrication of crack-free parts with Laser Powder-Bed-Fusion (L-PBF) based additive manufacturing (AM) method. Thermal diffusivity and thermal conductivity of L-PBF samples made by mixtures of IN939 alloy and Si powders were investigated. At temperatures above 800°C, the as-fabricated Si-doped IN939 was observed to exhibit an exceptionally high thermal conductivity, which can be attributed to the occurrence of endothermic reactions. This pseudo high thermal conductivity can effectively minimize the thermal stress and offers a potential solution to produce crack-free L-PBF parts for nonweldable alloys. GRAPHICAL ABSTRACT IMPACT STATEMENT The paper proposes a potential solution for preparing crack-free L-PBF nonweldable alloys. Modifying the composition to introduce an endothermic reaction has been shown to decrease the tendency of cracking.
{"title":"The potential benefit of pseudo high thermal conductivity for laser powder bed fusion additive manufacturing","authors":"H. Ding, Selami Emanet, Yeh-Peng Chen, Shengmin Guo","doi":"10.1080/21663831.2023.2243990","DOIUrl":"https://doi.org/10.1080/21663831.2023.2243990","url":null,"abstract":"This study examined the impact of transient pseudo high thermal conductivity to the fabrication of crack-free parts with Laser Powder-Bed-Fusion (L-PBF) based additive manufacturing (AM) method. Thermal diffusivity and thermal conductivity of L-PBF samples made by mixtures of IN939 alloy and Si powders were investigated. At temperatures above 800°C, the as-fabricated Si-doped IN939 was observed to exhibit an exceptionally high thermal conductivity, which can be attributed to the occurrence of endothermic reactions. This pseudo high thermal conductivity can effectively minimize the thermal stress and offers a potential solution to produce crack-free L-PBF parts for nonweldable alloys. GRAPHICAL ABSTRACT IMPACT STATEMENT The paper proposes a potential solution for preparing crack-free L-PBF nonweldable alloys. Modifying the composition to introduce an endothermic reaction has been shown to decrease the tendency of cracking.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"797 - 805"},"PeriodicalIF":8.3,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46792582","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 : 2023-07-24DOI: 10.1080/21663831.2023.2238010
K. Ait Oukaci, D. Stoeffler, M. Hehn, M. Grassi, B. Sarpi, M. Bailleul, Y. Henry, S. Petit, F. Montaigne, R. Belkhou, D. Lacour
By combining volume sensitive high resolution Magnetic Force Microscopy with surface sensitive X-ray Photoemission Electron Microscopy, we resolved the depth profile of a weak stripe magnetic texture and its evolution upon in-plane magnetization reversal. In contrast to previous reports, we show that the conventional weak stripe texture undergoes a well-defined undulation while the magnetic field is reversed to negative after in plane positive saturation. This transformation is strongly impacting the flux closure caps domains and a staggered Néel caps texture appears. Thanks to quantitative agreement with micro-magnetic simulations, we demonstrate that the existence of both the instability and the staggered Néel caps is intrinsic in negative applied field after positive in plane saturation. This reversal mode is characterized by a checker board pattern of alternating surface magnetic charges and by a longitudinal modulation of the in-plane component of magnetization similar to the oscillatory buckling reversal mode reported in elongated soft magnetic nanostructures. GRAPHICAL ABSTRACT IMPACT STATEMENT Zigzaging magnetic weak stripes have been observed in CoFeB thin films. The characteristics of this new magnetic texture and its origins are revealed thanks to MFM and XMCD-PEEM measurements combined to micromagnetic simulations.
{"title":"Oscillatory buckling reversal of a weak stripe magnetic texture","authors":"K. Ait Oukaci, D. Stoeffler, M. Hehn, M. Grassi, B. Sarpi, M. Bailleul, Y. Henry, S. Petit, F. Montaigne, R. Belkhou, D. Lacour","doi":"10.1080/21663831.2023.2238010","DOIUrl":"https://doi.org/10.1080/21663831.2023.2238010","url":null,"abstract":"By combining volume sensitive high resolution Magnetic Force Microscopy with surface sensitive X-ray Photoemission Electron Microscopy, we resolved the depth profile of a weak stripe magnetic texture and its evolution upon in-plane magnetization reversal. In contrast to previous reports, we show that the conventional weak stripe texture undergoes a well-defined undulation while the magnetic field is reversed to negative after in plane positive saturation. This transformation is strongly impacting the flux closure caps domains and a staggered Néel caps texture appears. Thanks to quantitative agreement with micro-magnetic simulations, we demonstrate that the existence of both the instability and the staggered Néel caps is intrinsic in negative applied field after positive in plane saturation. This reversal mode is characterized by a checker board pattern of alternating surface magnetic charges and by a longitudinal modulation of the in-plane component of magnetization similar to the oscillatory buckling reversal mode reported in elongated soft magnetic nanostructures. GRAPHICAL ABSTRACT IMPACT STATEMENT Zigzaging magnetic weak stripes have been observed in CoFeB thin films. The characteristics of this new magnetic texture and its origins are revealed thanks to MFM and XMCD-PEEM measurements combined to micromagnetic simulations.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"789 - 795"},"PeriodicalIF":8.3,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44018820","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 : 2023-07-21DOI: 10.1080/21663831.2023.2237996
Meng Zhang, Hailong Jia, M. Zha, Lei Zhao, Zhen-Ming Hua, Cheng Wang, Yipeng Gao, Hong Wang
Tailoring recrystallization via particle-stimulated nucleation (PSN) and pinning effects from secondary phase particles effectively weakens textures, which is still challenging for low-alloyed rare earth-free Mg alloys. Herein, the texture of a dilute cold-rolled Mg-2.2Al-0.33Ca (wt.%) alloy is found to reduce with the appearance of transverse direction (TD) texture components during static recrystallization. The texture transition is mainly attributed to the preferential growth of TD-oriented recrystallized grains, resulting from the preferential segregation of Al and Ca atoms on basal-oriented grain boundaries with low misorientation angles. The findings provide an in-depth understanding of texture modification in Mg alloys. GRAPHICAL ABSTRACT IMPACT STATEMENT The anisotropic co-segregation of Al and Ca on grain boundaries is responsible for the texture weakening of a dilute Mg-Al-Ca alloy, which provides a strategy for texture modification in such alloys.
{"title":"Anisotropic segregation-driven texture weakening in a dilute Mg-Al-Ca alloy during isothermal annealing","authors":"Meng Zhang, Hailong Jia, M. Zha, Lei Zhao, Zhen-Ming Hua, Cheng Wang, Yipeng Gao, Hong Wang","doi":"10.1080/21663831.2023.2237996","DOIUrl":"https://doi.org/10.1080/21663831.2023.2237996","url":null,"abstract":"Tailoring recrystallization via particle-stimulated nucleation (PSN) and pinning effects from secondary phase particles effectively weakens textures, which is still challenging for low-alloyed rare earth-free Mg alloys. Herein, the texture of a dilute cold-rolled Mg-2.2Al-0.33Ca (wt.%) alloy is found to reduce with the appearance of transverse direction (TD) texture components during static recrystallization. The texture transition is mainly attributed to the preferential growth of TD-oriented recrystallized grains, resulting from the preferential segregation of Al and Ca atoms on basal-oriented grain boundaries with low misorientation angles. The findings provide an in-depth understanding of texture modification in Mg alloys. GRAPHICAL ABSTRACT IMPACT STATEMENT The anisotropic co-segregation of Al and Ca on grain boundaries is responsible for the texture weakening of a dilute Mg-Al-Ca alloy, which provides a strategy for texture modification in such alloys.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"781 - 788"},"PeriodicalIF":8.3,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45196395","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 : 2023-07-14DOI: 10.1080/21663831.2023.2235375
M. Zha, Si-Qing Wang, Tong Wang, Hailong Jia, Ya-wei Li, Zhen-Ming Hua, K. Guan, Cheng Wang, Hong Wang
ABSTRACT Achieving high strength-ductility synergy in hard-to-deform high-alloyed Mg-Gd-Y-Zn-Zr alloys by rolling remains a great challenge. In this work, a Mg-8.2Gd-3.8Y-1.0Zn-0.4Zr (wt.%) alloy sheet possessing a high yield strength (YS) of ∼385 MPa, ultimate tensile strength (UTS) of ∼420 MPa and elongation of ∼19% was achieved via a single-pass hard-plate rolling (HPR) process. The high YS is mainly from amounts of submicron FGs and strong interactions between densely distributed γ′ precipitates and pyramidal dislocations in CGs. The activation of multiple slip systems, HDI-hardening effect, and crack suppression effect from γ′ particles, endow the excellent ductility. GRAPHICAL ABSTRACT IMPACT STATEMENT The hard-to-deform WE94 alloy sheet exhibiting a superior strength-ductility synergy has been prepared by a single-pass HPR process. The bimodal grain structure containing substantial ultrafine grains coupling with inhomogeneously-distributed nano-scale precipitates accounts for the superior mechanical properties.
{"title":"Developing high-strength and ductile Mg-Gd-Y-Zn-Zr alloy sheet via bimodal grain structure coupling with heterogeneously-distributed precipitates","authors":"M. Zha, Si-Qing Wang, Tong Wang, Hailong Jia, Ya-wei Li, Zhen-Ming Hua, K. Guan, Cheng Wang, Hong Wang","doi":"10.1080/21663831.2023.2235375","DOIUrl":"https://doi.org/10.1080/21663831.2023.2235375","url":null,"abstract":"ABSTRACT Achieving high strength-ductility synergy in hard-to-deform high-alloyed Mg-Gd-Y-Zn-Zr alloys by rolling remains a great challenge. In this work, a Mg-8.2Gd-3.8Y-1.0Zn-0.4Zr (wt.%) alloy sheet possessing a high yield strength (YS) of ∼385 MPa, ultimate tensile strength (UTS) of ∼420 MPa and elongation of ∼19% was achieved via a single-pass hard-plate rolling (HPR) process. The high YS is mainly from amounts of submicron FGs and strong interactions between densely distributed γ′ precipitates and pyramidal dislocations in CGs. The activation of multiple slip systems, HDI-hardening effect, and crack suppression effect from γ′ particles, endow the excellent ductility. GRAPHICAL ABSTRACT IMPACT STATEMENT The hard-to-deform WE94 alloy sheet exhibiting a superior strength-ductility synergy has been prepared by a single-pass HPR process. The bimodal grain structure containing substantial ultrafine grains coupling with inhomogeneously-distributed nano-scale precipitates accounts for the superior mechanical properties.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"772 - 780"},"PeriodicalIF":8.3,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42855914","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 : 2023-07-12DOI: 10.1080/21663831.2023.2233993
Yiming Zhong, Bo Zhang, Ling Fang, Junjie Chen, Wei Xu, X. Li
Grain refinement via severe plastic deformation (SPD) can induce the decomposition of Al–Zn supersaturated solid solution, resulting in strain softening rather than hardening. So far, it is very challenging to improve the strength of binary Al–Zn alloy by refining grains through SPD. Herein, a single-phase supersaturated solid solution nanostructure with relaxed grain boundaries has been successfully generated in Al–21.7 at% Zn alloy by cryogenic high-pressure torsion. Instead of softening, giant hardening is achieved. The nanocrystalline Al–Zn alloy with grain size of 15 nm has an ultrahigh yield strength of about 642 MPa. GRAPHICAL ABSTRACT IMPACT STATEMENT Giant hardening has been achieved in Al–Zn alloy with extremely fine nanograins and single-phased supersaturated solid solution under extremely high shear strain via cryogenic high-pressure torsion.
{"title":"Giant hardening and formation of nanograined supersaturated solid solution in Al–Zn system","authors":"Yiming Zhong, Bo Zhang, Ling Fang, Junjie Chen, Wei Xu, X. Li","doi":"10.1080/21663831.2023.2233993","DOIUrl":"https://doi.org/10.1080/21663831.2023.2233993","url":null,"abstract":"Grain refinement via severe plastic deformation (SPD) can induce the decomposition of Al–Zn supersaturated solid solution, resulting in strain softening rather than hardening. So far, it is very challenging to improve the strength of binary Al–Zn alloy by refining grains through SPD. Herein, a single-phase supersaturated solid solution nanostructure with relaxed grain boundaries has been successfully generated in Al–21.7 at% Zn alloy by cryogenic high-pressure torsion. Instead of softening, giant hardening is achieved. The nanocrystalline Al–Zn alloy with grain size of 15 nm has an ultrahigh yield strength of about 642 MPa. GRAPHICAL ABSTRACT IMPACT STATEMENT Giant hardening has been achieved in Al–Zn alloy with extremely fine nanograins and single-phased supersaturated solid solution under extremely high shear strain via cryogenic high-pressure torsion.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"764 - 771"},"PeriodicalIF":8.3,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43556131","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 : 2023-07-11DOI: 10.1080/21663831.2023.2231985
Xiao Liu, K. Vecchio
Heterogeneous lamella (HL) structures were produced via simple processing steps in a FeCoNi-based complex concentrated alloy (CCA) with superalloy-like FCC/L12 microstructure. Compared to the homogeneous-structured control specimens, the HL-structured specimens exhibited synergic enhancements in strengths and ductility (with σy up to 1 GPa, σu up to 1.4 GPa, and ϵt up to 16.5%), and at the same time, higher saturation magnetization and lower coercivity (with Ms up to 104 Am2 kg−1 and Hc as low as 833 A/m). The results obtained in this study provide insights to enhancing mechanical properties in structural soft magnetic materials without sacrificing their magnetic properties. GRAPHICAL ABSTRACT IMPACT STATEMENT The current work presents a simple and effective strategy that can be applied to soft magnetic alloys with superalloy-like microstructures for simultaneous enhancements of mechanical and magnetic properties.
{"title":"Simultaneously improving mechanical and magnetic properties through heterogeneous lamella structures in a superalloy-like, soft magnetic complex concentrated alloy","authors":"Xiao Liu, K. Vecchio","doi":"10.1080/21663831.2023.2231985","DOIUrl":"https://doi.org/10.1080/21663831.2023.2231985","url":null,"abstract":"Heterogeneous lamella (HL) structures were produced via simple processing steps in a FeCoNi-based complex concentrated alloy (CCA) with superalloy-like FCC/L12 microstructure. Compared to the homogeneous-structured control specimens, the HL-structured specimens exhibited synergic enhancements in strengths and ductility (with σy up to 1 GPa, σu up to 1.4 GPa, and ϵt up to 16.5%), and at the same time, higher saturation magnetization and lower coercivity (with Ms up to 104 Am2 kg−1 and Hc as low as 833 A/m). The results obtained in this study provide insights to enhancing mechanical properties in structural soft magnetic materials without sacrificing their magnetic properties. GRAPHICAL ABSTRACT IMPACT STATEMENT The current work presents a simple and effective strategy that can be applied to soft magnetic alloys with superalloy-like microstructures for simultaneous enhancements of mechanical and magnetic properties.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"749 - 756"},"PeriodicalIF":8.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47899786","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 : 2023-06-26DOI: 10.1080/21663831.2023.2227221
Qian Wang, N. Ma, Wen-Hsen Huang, Junmiao Shi, Xiao-Tao Luo, Sora Tomitaka, S. Morooka, M. Watanabe
Cold spray (CS) has emerged as a representative of solid-state additive manufacturing (AM) via supersonic impact. It enables a high deposition rate of solid-state microparticles. Delamination, however, tends to occur when depositing too thick; this remains to be conquered. Here, a CS-like process, warm spray (WS), was presented. Interestingly, it was found that the appropriate increase in particle temperature can effectively reduce the residual stress amplitude, relieving the concentrated tensile stress and safeguarding the additively manufactured components from interfacial delamination even when depositing too thick. The key role of temperature on delamination was identified in solid-state AM via supersonic impact. GRAPHICAL ABSTRACT IMPACT STATEMENT It makes a clear understanding of the delamination issue in solid-state AM via supersonic impact, providing scientific guidance for technological/equipment upgrading and safeguarding the structural integrity of complex, large-size components.
{"title":"Key role of temperature on delamination in solid-state additive manufacturing via supersonic impact","authors":"Qian Wang, N. Ma, Wen-Hsen Huang, Junmiao Shi, Xiao-Tao Luo, Sora Tomitaka, S. Morooka, M. Watanabe","doi":"10.1080/21663831.2023.2227221","DOIUrl":"https://doi.org/10.1080/21663831.2023.2227221","url":null,"abstract":"Cold spray (CS) has emerged as a representative of solid-state additive manufacturing (AM) via supersonic impact. It enables a high deposition rate of solid-state microparticles. Delamination, however, tends to occur when depositing too thick; this remains to be conquered. Here, a CS-like process, warm spray (WS), was presented. Interestingly, it was found that the appropriate increase in particle temperature can effectively reduce the residual stress amplitude, relieving the concentrated tensile stress and safeguarding the additively manufactured components from interfacial delamination even when depositing too thick. The key role of temperature on delamination was identified in solid-state AM via supersonic impact. GRAPHICAL ABSTRACT IMPACT STATEMENT It makes a clear understanding of the delamination issue in solid-state AM via supersonic impact, providing scientific guidance for technological/equipment upgrading and safeguarding the structural integrity of complex, large-size components.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"742 - 748"},"PeriodicalIF":8.3,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46031383","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 : 2023-06-26DOI: 10.1080/21663831.2023.2224397
Wenyi Huo, Shiqi Wang, F. J. Domínguez-Gutiérrez, Kai Ren, Ł. Kurpaska, F. Fang, S. Papanikolaou, Hyoung Seop Kim, Jianqing Jiang
High-entropy materials, for both complexity in structure and superiority in performance, have been widely confirmed to be one possible kind of advanced electrocatalyst. Significant efforts have been dedicated to modeling the atomic-level details of high-entropy catalysts to improve the viability for bottom-up design of advanced electrocatalysts. In this review, first, we survey developments in various modeling methods that are based on density functional theory. We review progress in density functional theory simulations for emulating different high-entropy electrocatalysts. Then, we review the advancements in simulations of high-entropy materials for electrocatalytic applications. Finally, we present prospects in this field. Abbreviations: HEMs: high-entropy materials; CCMs: compositionally complex materials; DFT: density functional theory; LDA: local density approximation; GGA: generalized gradient approximation; VASP: Vienna Ab initio simulation package; ECP: effective core potential; PAW: projector-augmented wave potential; VCA: virtual crystal approximation; CPA: coherent potential approximation; SQS: special quasi-random structures; SSOS: small set of ordered structures; SLAE: similar local atomic environment; HEAs: high-entropy alloys; FCC: face-centered cubic; BCC: body-centered cubic; HCP: hexagonal close-packed; ORR: oxygen reduction reaction; OER: oxide evolution reaction; HER: hydrogen evolution reaction; RDS: rate-limiting step; AEM: adsorbate evolution mechanism; LOM: lattice oxygen oxidation mechanism; HEOs: high-entropy oxides; OVs: oxygen vacancies; PDOS: projected densities of states; ADR: ammonia decomposition reaction; NRR: nitrogen reduction reaction; CO2RR: CO2 reduction reaction; TMDC: transition metal dichalcogenide; TM: transition metal; AOR: alcohol oxidation reaction; GOR: glycerol oxidation reaction; UOR: urea oxidation reaction; HEI: high-entropy intermetallic. GRAPHICAL ABSTRACT IMPACT STATEMENT This paper reviews recent developments in the field of atomistic simulations of high-entropy electrocatalysts, one of emerging state-of-the-art catalytic materials.
{"title":"High-entropy materials for electrocatalytic applications: a review of first principles modeling and simulations","authors":"Wenyi Huo, Shiqi Wang, F. J. Domínguez-Gutiérrez, Kai Ren, Ł. Kurpaska, F. Fang, S. Papanikolaou, Hyoung Seop Kim, Jianqing Jiang","doi":"10.1080/21663831.2023.2224397","DOIUrl":"https://doi.org/10.1080/21663831.2023.2224397","url":null,"abstract":"High-entropy materials, for both complexity in structure and superiority in performance, have been widely confirmed to be one possible kind of advanced electrocatalyst. Significant efforts have been dedicated to modeling the atomic-level details of high-entropy catalysts to improve the viability for bottom-up design of advanced electrocatalysts. In this review, first, we survey developments in various modeling methods that are based on density functional theory. We review progress in density functional theory simulations for emulating different high-entropy electrocatalysts. Then, we review the advancements in simulations of high-entropy materials for electrocatalytic applications. Finally, we present prospects in this field. Abbreviations: HEMs: high-entropy materials; CCMs: compositionally complex materials; DFT: density functional theory; LDA: local density approximation; GGA: generalized gradient approximation; VASP: Vienna Ab initio simulation package; ECP: effective core potential; PAW: projector-augmented wave potential; VCA: virtual crystal approximation; CPA: coherent potential approximation; SQS: special quasi-random structures; SSOS: small set of ordered structures; SLAE: similar local atomic environment; HEAs: high-entropy alloys; FCC: face-centered cubic; BCC: body-centered cubic; HCP: hexagonal close-packed; ORR: oxygen reduction reaction; OER: oxide evolution reaction; HER: hydrogen evolution reaction; RDS: rate-limiting step; AEM: adsorbate evolution mechanism; LOM: lattice oxygen oxidation mechanism; HEOs: high-entropy oxides; OVs: oxygen vacancies; PDOS: projected densities of states; ADR: ammonia decomposition reaction; NRR: nitrogen reduction reaction; CO2RR: CO2 reduction reaction; TMDC: transition metal dichalcogenide; TM: transition metal; AOR: alcohol oxidation reaction; GOR: glycerol oxidation reaction; UOR: urea oxidation reaction; HEI: high-entropy intermetallic. GRAPHICAL ABSTRACT IMPACT STATEMENT This paper reviews recent developments in the field of atomistic simulations of high-entropy electrocatalysts, one of emerging state-of-the-art catalytic materials.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"713 - 732"},"PeriodicalIF":8.3,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48435847","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 : 2023-06-26DOI: 10.1080/21663831.2023.2209156
Mingwei Chang, Jing Wu, Li Xu, Liming Zhang
Renewable-energy-derived electrochemical nitrogen fixation represents a sustainable way to produce green ammonia (NH3), but the energy efficiency is limited by its sluggish kinetics and complex reaction pathways. Highly active, selective and robust electrocatalysts are strongly needed to promote the efficiency of nitrogen conversion. Here, we provide an overview of the recent progress in understanding the structure–function correlation of single-atomic site catalysts (SASCs) for electrochemical nitrogen fixation, to provide mechanistic insights and guide the future rational design of SASCs. First, we review the fundamental understanding of both N2 and oxynitride reduction on SASCs, with different hydrogenation pathways. Afterwards, we present the recent progress in the development of well-defined SASCs with various metal centres and the influence from local chemical environments, such as the coordination number, first-shell and second-sphere coordination. At last, we listed some perspectives on future study in this emerging research field. GRAPHICAL ABSTRACT IMPACT STATEMENT The paper provides mechanistic insights into the single-atomic site catalysts towards electrochemical nitrogen fixation.
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