Materials & Design最新文献_第4页

Thermophysical modeling of niobium alloys informs materials selection and design for high-temperature applications 铌合金的热物理模型为高温应用的材料选择和设计提供信息

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-15 DOI: 10.1016/j.matdes.2024.113456

L.S. Bowling , A.T. Wang , N.R. Philips , W.T. Riffe , D.E. Matejczyk , J.M. Skelton , P.E. Hopkins , J.M. Fitz-Gerald , S.R. Agnew

{"title":"Thermophysical modeling of niobium alloys informs materials selection and design for high-temperature applications","authors":"L.S. Bowling , A.T. Wang , N.R. Philips , W.T. Riffe , D.E. Matejczyk , J.M. Skelton , P.E. Hopkins , J.M. Fitz-Gerald , S.R. Agnew","doi":"10.1016/j.matdes.2024.113456","DOIUrl":"10.1016/j.matdes.2024.113456","url":null,"abstract":"<div><div>There is renewed interest in refractory alloys that possess higher service temperatures than incumbent Ni-based superalloys (⪆1100 °C). Thermophysical property data for six Nb-alloys are gathered from the literature and reviewed, and new data are provided for two Hf-containing Nb-alloys; elastic modulus, thermal expansion, thermal conductivity, and heat capacity are presented for C103, and new thermal conductivity data are provided for a higher strength alloy, WC-3009. Comparisons with Ni-superalloys and other refractory-metal based alloys provide context. Physics-based models are provided that describe the temperature dependencies of the Young’s modulus, coefficient of thermal expansion and density, and thermal conductivity; such that fair comparisons can be made across alloys for any given condition. The results suggest a need for improved understanding of the temperature dependence of the elastic modulus. A performance index is introduced for making informed materials selection decisions in the context of lightweight, panel-shaped applications subjected to sharp thermal transients or steep thermal gradients, and the significant strain rate sensitivity of Nb-alloys is highlighted. Ultimately, the relative value of current commercial alloy, C103, as well as the promise of specific Nb-W-Zr alloys are highlighted.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113456"},"PeriodicalIF":7.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring nanotwinned Cu interlayers for localizing anisotropic plastic deformation during low energy input ultrasonic welding of robust Cu-Cu joints 在低能量输入超声波焊接坚固的铜-铜接头过程中，定制纳米细化铜夹层以实现各向异性塑性变形的局部化

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-15 DOI: 10.1016/j.matdes.2024.113459

Jingyuan Ma , Xiaole Fan , Fengyi Wang , Qiuchen Ma , Hongjun Ji

{"title":"Tailoring nanotwinned Cu interlayers for localizing anisotropic plastic deformation during low energy input ultrasonic welding of robust Cu-Cu joints","authors":"Jingyuan Ma , Xiaole Fan , Fengyi Wang , Qiuchen Ma , Hongjun Ji","doi":"10.1016/j.matdes.2024.113459","DOIUrl":"10.1016/j.matdes.2024.113459","url":null,"abstract":"<div><div>Ultrasonic welding, known for its severe plastic deformation, faces the challenge of balancing sufficient deformation at the welding interface with minimizing damage to the substrate. This study utilizes the anisotropic deformation mechanisms and mechanical properties of nanotwinned Cu (nt-Cu). Specifically, Cu coatings featuring nanotwin layers aligned parallel to the ultrasonic vibration direction were employed as interlayers in ultrasonic welding of Cu-Cu joints. The effects of the nt-Cu interlayer on the welding quality and the deformation mechanisms under the various welding pressures are investigated. Experimental and molecular dynamics simulations demonstrate that at low welding pressures, the nt-Cu interlayer undergoes deformation and detwinning primarily through twin boundary migration. This mechanism effectively mitigates work hardening during the welding process, localizes deformation at the welding interface, and significantly enhances the strengths of the Cu-Cu joints. The maximum enhancement proportion occurs at a welding pressure of 8 psi, up to 26.75% compared to conventional coarse-grained copper. As the welding pressure increases, the strengthening effect gradually weakens. The deformation mechanism of nt-Cu transitions to dislocation transverse and threading. The interaction between dislocations and twin boundaries forms incoherent twin boundaries and 9R phases, resulting in work hardening of the interfacial regions and reduction of the strengthening effect.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113459"},"PeriodicalIF":7.6,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on mechanical degradation of Ferrite/ martensite and austenitic steels in high-temperature supercritical carbon dioxide environment 高温超临界二氧化碳环境下铁素体/马氏体和奥氏体钢的机械降解研究

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-15 DOI: 10.1016/j.matdes.2024.113455

Gen Zhang , Yan-Ping Huang , Tao Yang , Yong-Fu Zhao , Min-yun Liu , Wei-Wei Liu , Hong Yang , Yao-Lin Zhao , Shao-Wei Nie

引用次数: 0

Low hysteresis in composites ceramics achieved by building polarization field and restoring force 通过建立极化场和恢复力实现复合陶瓷的低滞后性

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-14 DOI: 10.1016/j.matdes.2024.113458

Fangfang Zeng , Zhaokai Yao , Qiansi Zhang , Peng Peng , Xi Feng , Rongchuan He , Rongshan Zhou , Huitao Guo , Quan Xie , Guifen Fan , Qingquan Xiao , Li Zhang , Jia Liu

{"title":"Low hysteresis in composites ceramics achieved by building polarization field and restoring force","authors":"Fangfang Zeng , Zhaokai Yao , Qiansi Zhang , Peng Peng , Xi Feng , Rongchuan He , Rongshan Zhou , Huitao Guo , Quan Xie , Guifen Fan , Qingquan Xiao , Li Zhang , Jia Liu","doi":"10.1016/j.matdes.2024.113458","DOIUrl":"10.1016/j.matdes.2024.113458","url":null,"abstract":"<div><div>Large strain hysteresis and remnant strain are one of the vital reasons for the absence of BiFeO<sub>3</sub>-BaTiO<sub>3</sub>-based ceramics in commercial actuator fields. Here, we elaborately propose a strategy, preparing 0–3 type composite ceramics, to reduce the hysteresis and remnant strain, and the target is successfully achieved by building restoring force and polarization field. Normal strain constant and electric field-induced strain in 0–3 composites have enhanced by 260% and 196% compared to those of non-composite ceramics, respectively. Also, hysteresis and remnant strain in 0–3 composites have decreased by 35.9% and 50.6% in contrast to those of non-composites. Superior electrostrain properties under the low electric field are attributed to the construction of polarization field, restoring force, and micro-capacitance, coinciding with phase field simulation, and the strategy will pave a useful way to optimize the hysteresis and remnant strain in BiFeO<sub>3</sub>-BaTiO<sub>3</sub>-based high-temperature ceramics.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113458"},"PeriodicalIF":7.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of transition metal carbide/nitride superlattices with bilayer period-dependent mechanical and thermal properties 设计具有双层周期机械和热特性的过渡金属碳化物/氮化物超晶格

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-14 DOI: 10.1016/j.matdes.2024.113432

Barbara Schmid , Thomas Schöngruber , Tomasz Wojcik , Bálint Hajas , Eleni Ntemou , Daniel Primetzhofer , Bernhard Fickl , Sarah Christine Bermanschläger , Szilard Kolozsvari , Nikola Koutná , Paul Heinz Mayrhofer

{"title":"Design of transition metal carbide/nitride superlattices with bilayer period-dependent mechanical and thermal properties","authors":"Barbara Schmid , Thomas Schöngruber , Tomasz Wojcik , Bálint Hajas , Eleni Ntemou , Daniel Primetzhofer , Bernhard Fickl , Sarah Christine Bermanschläger , Szilard Kolozsvari , Nikola Koutná , Paul Heinz Mayrhofer","doi":"10.1016/j.matdes.2024.113432","DOIUrl":"10.1016/j.matdes.2024.113432","url":null,"abstract":"<div><div>Transition metal carbides are valued for high hardness, thermal and mechanical stability, but fall short in fracture toughness. Contrarily, their less hard transition metal nitride counterparts offer more favorable fracture characteristics. Here, we use magnetron-sputtering to synthesize nitrides and carbides—TiC/TaN, TiN/TaC—in a nanolaminate superlattice (SL) architecture and compare their properties (hardness, fracture toughness, thermal stability) with that of their layer materials, as well as of carbide SLs, TiC/TaC. Except for the monolithically grown TaN and TiC/TaN SLs with nominal bilayer periods above 14 nm, all other coatings are purely fcc-structured and feature close-to-stoichiometric compositions, revealed by EBS-ERDA and XRF measurements. In-situ X-ray diffraction investigations indicate that the monolithically grown coatings have poor thermal stability compared to the SLs, which remain stable up until well over 1000-°C. While the TiC/TaC superlattices retain the highest hardness of all three systems, with 44.1 ± 3.4 GPa at a bilayer period (<em>Λ</em>) of 2 nm, the TiN/TaC system exhibits significantly higher fracture toughness values with up to 4.75 ± 0.33 MPa√m for the <em>Λ</em> = 14 nm coating. The TiC/TaN system exhibits neither hardness nor fracture toughness enhancement, as explained by the formation of a secondary hexagonal Ta<sub>2</sub>N phase.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113432"},"PeriodicalIF":7.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergy enhancement in low-frequency sound absorption by a nanofibre coating for the microperforated panels 用纳米纤维涂层增强微穿孔板的低频吸音效果

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-14 DOI: 10.1016/j.matdes.2024.113460

Jingze Liu , R. Hugh Gong , Enza Migliore

{"title":"Synergy enhancement in low-frequency sound absorption by a nanofibre coating for the microperforated panels","authors":"Jingze Liu , R. Hugh Gong , Enza Migliore","doi":"10.1016/j.matdes.2024.113460","DOIUrl":"10.1016/j.matdes.2024.113460","url":null,"abstract":"<div><div>The sound absorption coefficient of polyvinylidene fluoride (PVDF) and carbon nanotube (CNT) composite nanofibre-coated micro-perforated plate (MPP) is investigated. The MPP material is steel and is laser-drilled. The nanofibres are fabricated by electrospinning and directly coated onto the steel MPP collector. This makes it possible to attach extremely thin coatings of nanofibres. The sound absorption coefficient was measured using the impedance tube method. The results show that MPP absorbers with nanofibre coatings significantly widen the absorption bandwidth and increase the absorption coefficient. Because of the synergy enhancement effect, the performance of the absorber is much exceed the expect of the transfer matrix method (TMM) model. A very thin coating of nanofibres enables a significant increase in MPP performance. The effects of the nanofibre coatings were analyzed by finite element method (FEM) simulations. The coating enhances the end effect of MPP and extends along the MPP surface. In addition, different nanofibre coating thickness and impedance also have different effects on the sound absorption performance. This study provides a new method to enhance the performance of MPP with negligible increase in thickness and costs.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113460"},"PeriodicalIF":7.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid fibre-reinforced cementitious composites with short polyethylene and continue carbon fibres: Influence of roving impregnation on tensile and cracking behaviour 短聚乙烯纤维和续碳纤维混合纤维增强水泥基复合材料：粗纱浸渍对拉伸和开裂行为的影响

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-14 DOI: 10.1016/j.matdes.2024.113465

Cesare Signorini, Ameer H. Ahmed, Marco Liebscher, Jitong Zhao, Thomas Köberle, Viktor Mechtcherine

{"title":"Hybrid fibre-reinforced cementitious composites with short polyethylene and continue carbon fibres: Influence of roving impregnation on tensile and cracking behaviour","authors":"Cesare Signorini, Ameer H. Ahmed, Marco Liebscher, Jitong Zhao, Thomas Köberle, Viktor Mechtcherine","doi":"10.1016/j.matdes.2024.113465","DOIUrl":"10.1016/j.matdes.2024.113465","url":null,"abstract":"<div><div>Hybrid externally-bonded reinforcements are considered a viable technique for strengthening existing concrete structures. They combine high-performance impregnated textiles with matrices containing dispersed microfibres to foster the ductility and toughness of the composite system. In this paper, the mechanical performance of textile-reinforced strain-hardening cement-based composites (TR-SHCC) is investigated in detail. A novel high-performance inorganic binder based on limestone calcined clay cement (LC<sup>3</sup>) is reinforced with both polyethylene (PE) dispersed microfibres and carbon fibre (CF) textiles as continuous biaxial reinforcement. The CF yarns are impregnated by an automated process to improve the monolithic response under uniaxial tensile loading and to ensure high production consistency. Fully inorganic suspensions, i.e., geopolymer and cement-based, are being investigated, as they can provide superior thermal stability compared to traditional polymeric impregnating agents. Interphase adhesion is investigated by single-yarn pull-out tests, microscopy and µCT at various micro scales. On the one hand, the improved adhesion promoted by cement impregnation resulted in the finest and most diffuse crack pattern. Conversely, the strength of the overall composite is mainly governed by the tensile failure of the yarns, irrespective of the bond, and dispersed fibres consistently improve the post-cracking stage and the strength of the hybrid composites.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113465"},"PeriodicalIF":7.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing α-tricalcium phosphate bone cement composite formulations: The critical role of bioactive glass particle size 优化α-磷酸三钙骨水泥复合配方：生物活性玻璃粒度的关键作用

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-14 DOI: 10.1016/j.matdes.2024.113463

Öznur Demir , Estere Oselska , Maris Bertins , Arturs Viksna , Aldo R. Boccaccini , Dagnija Loca

{"title":"Optimizing α-tricalcium phosphate bone cement composite formulations: The critical role of bioactive glass particle size","authors":"Öznur Demir , Estere Oselska , Maris Bertins , Arturs Viksna , Aldo R. Boccaccini , Dagnija Loca","doi":"10.1016/j.matdes.2024.113463","DOIUrl":"10.1016/j.matdes.2024.113463","url":null,"abstract":"<div><div>Calcium phosphate cements (CPCs) have been extensively utilized as bone grafting material due to their inherent osteoconductive properties, although they often lacked sufficient biological performance for effective bone healing at the defect site. Incorporating mesoporous bioactive glass (MBG) into CPCs offers a solution by improving porosity, promoting degradation and increasing the available surface area. In the scope of this study, we integrated MBG into CPCs and assessed the impact of varying MBG particle sizes (<20 µm, <38 µm, <100 µm) on the setting characteristics, microstructure, mechanical strength, and preliminary cell response of CPCs. Investigations revealed that < 20 µm MBG particles significantly improved the setting characteristics and compressive strength of CPCs, while < 38 µm particles promoted degradation and ion release, facilitating apatite formation. MBG incorporation was found to promote microstructural homogeneity and facilitate apatite formation, with particle size directly affecting these outcomes. Biocompatibility assessments indicated no cytotoxic effects, supported by the favorable cellular responses (> 92 % viability compared to control group). These findings underscore the critical impact of MBG particle size on developing advanced CPCs for biomedical applications, guiding future design and optimization strategies.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113463"},"PeriodicalIF":7.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clarifying the formation of equiaxed grains and microstructural refinement in the additive manufacturing of Ti-Cu 澄清钛铜增材制造中等轴晶粒的形成和微观结构的细化

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-14 DOI: 10.1016/j.matdes.2024.113440

Alec I. Saville , Adriana Eres-Castellanos , Andrew B. Kustas , Levi Van Bastian , Donald F. Susan , Dale E. Cillessen , Sven C. Vogel , Natalie A. Compton , Kester D. Clarke , Alain Karma , Amy J. Clarke

{"title":"Clarifying the formation of equiaxed grains and microstructural refinement in the additive manufacturing of Ti-Cu","authors":"Alec I. Saville , Adriana Eres-Castellanos , Andrew B. Kustas , Levi Van Bastian , Donald F. Susan , Dale E. Cillessen , Sven C. Vogel , Natalie A. Compton , Kester D. Clarke , Alain Karma , Amy J. Clarke","doi":"10.1016/j.matdes.2024.113440","DOIUrl":"10.1016/j.matdes.2024.113440","url":null,"abstract":"<div><div>Controlling microstructural evolution in metallic additive manufacturing (AM) is difficult, especially in producing refined as-built grains instead of coarse, directional grains. Traditional solutions involve adding inoculants to AM feedstocks, but titanium (Ti) alloys cannot employ this approach without producing detrimental secondary phases. Ti-Cu (Ti-copper) alloys offer a solution through constitutional supercooling and/or solid state thermal cycling under AM conditions. This work analyzes a compositionally graded directed energy deposition (DED) Ti-Cu build, single-melt laser tracks, and dilatometric heat treatments to evaluate if, when, and by what mechanism(s) microstructural refinement occurs. Refinement by inoculation of unmelted powder particles was also considered. Constitutional supercooling produced no net microstructural refinement as any equiaxed dendrites which form are remelted with new deposition. This finding agreed with solidification modeling of powder bed fusion-laser beam (PBF-LB) and DED builds. Solid state thermal cycling refined microstructures only during <em>ex-situ</em> dilatometric heat treatments, suggesting build parameter optimization is needed to achieve refinement <em>in-situ</em>. Accidental heterogeneous nucleation on unmelted Ti powder, originating from the different thermophysical properties of Ti and Cu, provided the most significant microstructural refinement. This work systematically assesses the microstructural refinement mechanisms of Ti-Cu in AM builds and offers insights into microstructural control in eutectoid alloys.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113440"},"PeriodicalIF":7.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanism of novel defect multiplication impacting high power 4H-SiC devices 影响高功率 4H-SiC 器件的新型缺陷倍增机制

IF 7.6 2区材料科学

Materials & Design Pub Date : 2024-11-14 DOI: 10.1016/j.matdes.2024.113435

N.A. Mahadik , M. Dudley , B. Raghothamachar , Z. Chen , R.E. Stahlbush , M. Hinojosa , A. Lelis , W. Sung

{"title":"Mechanism of novel defect multiplication impacting high power 4H-SiC devices","authors":"N.A. Mahadik , M. Dudley , B. Raghothamachar , Z. Chen , R.E. Stahlbush , M. Hinojosa , A. Lelis , W. Sung","doi":"10.1016/j.matdes.2024.113435","DOIUrl":"10.1016/j.matdes.2024.113435","url":null,"abstract":"<div><div>Basal plane dislocations and stacking faults are critical defects influencing silicon carbide (SiC) based high power devices that are rapidly emerging to enable the future needs of electric vehicles, locomotives, renewables, and grid-scale applications. Microstructural properties of three novel interactions between basal plane dislocations and threading mixed dislocations (TMDs) are described. This leads to multiplication of Shockley stacking faults (SSFs) in SiC epitaxial layers. First is a mechanism of double interaction of two SSFs with TMDs that causes the SSFs to glide on multiple basal planes, and creation of locked partial dislocation dipoles (PDD) due to the attractive force between the opposite sign partial dislocations. Second type of interaction occurs between SSFs and a tilted TMD, that results in formation of another SSF. The third type of interaction causes further SSF multiplication by unlocking previously created PDDs. This occurs when the newly formed SSF intersects with the previously locked PDD, and unlocks it, leaving behind a freely gliding partial dislocation and formation of another SSF. Multiplication of SSFs can severely degrade reliability and performance of high power SiC devices by increasing reverse leakage current and on-state resistance, and could eventually lead to device failure.</div></div>","PeriodicalId":383,"journal":{"name":"Materials & Design","volume":"248 ","pages":"Article 113435"},"PeriodicalIF":7.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0