Journal of Materials Science & Technology最新文献_第6页

Achieving enhanced structural stability and electrical conductivity of MnHCF through Ni doping and CNT composite for efficient hybrid capacitive deionization 通过Ni掺杂和碳纳米管复合材料实现MnHCF的结构稳定性和导电性增强，实现高效的杂化电容去离子

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-19 DOI: 10.1016/j.jmst.2025.08.049

Zhouyi Chen, Xiao Zhang, Qi Tang, Wusong Geng, Chengyun Gong, Yunxia Zhang, Guozhong Wang

{"title":"Achieving enhanced structural stability and electrical conductivity of MnHCF through Ni doping and CNT composite for efficient hybrid capacitive deionization","authors":"Zhouyi Chen, Xiao Zhang, Qi Tang, Wusong Geng, Chengyun Gong, Yunxia Zhang, Guozhong Wang","doi":"10.1016/j.jmst.2025.08.049","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.08.049","url":null,"abstract":"The substitution of transition metals and construction of conductive skeleton to improve the stability and conductivity were studied for high-efficiency hybrid capacitive deionization (HCDI). Herein, the carbon nanotubes composite nickel-doped manganese hexacyanoferrate three-dimensional material (MNHCF@CNT) with multiple redox electron pairs and high-speed ion transport channels was successfully synthesized by a one-step co-precipitation method. The synthesized MNHCF5@CNT material exhibited high specific capacitance, low charge transfer resistance and excellent electrochemical stability. What is more, it achieved a high salt adsorption capacity of 71.28 mg g−1, ultrahigh maximum salt adsorption rate of 31.89 mg g−1 min−1, and maintained 98.72% of maximum salt adsorption capacity after 40 cycles. This exceptional HCDI performance primarily stems from the formation of robust Ni-N bonds via Ni substitution in MnHCF, improving the structural stability and ion diffusion kinetics. Meanwhile, efficient electron transport pathways are established through carbon nanotubes to suppress the volume expansion during the ion insertion/extraction process, thus improving the conductivity, ion storage capacity and cycle stability of the material. This work delivers actionable insights into the design of stable and highly efficient PBAs electrodes, critical for next-generation desalination technologies and hard water softening systems.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"26 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089137","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}

引用次数: 0

Femtosecond laser texturing of crack-free zirconia composites: Texturing of pre-sintered ceramics and microcrack self-healing 无裂纹氧化锆复合材料的飞秒激光织构：预烧结陶瓷的织构与微裂纹自愈

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-19 DOI: 10.1016/j.jmst.2025.09.012

Maoyin Li, Yuyun Yang, Chenmin Yao, Jide Han, Sylvie Castagne, Stevan Cokic, Bart Van Meerbeek, Jef Vleugels, Fei Zhang

{"title":"Femtosecond laser texturing of crack-free zirconia composites: Texturing of pre-sintered ceramics and microcrack self-healing","authors":"Maoyin Li, Yuyun Yang, Chenmin Yao, Jide Han, Sylvie Castagne, Stevan Cokic, Bart Van Meerbeek, Jef Vleugels, Fei Zhang","doi":"10.1016/j.jmst.2025.09.012","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.09.012","url":null,"abstract":"Laser surface texturing of ceramic components without inducing surface cracking and the concomitant strength degradation remains a significant challenge, limiting its application in high-strength or long-term fatigue resistance conditions. Here, a simple and convenient manufacturing methodology was explored by applying laser texturing on pre-sintered alumina toughened zirconia (ATZ) ceramics instead of fully sintered ones. Surface micro-cracks introduced by texturing were totally healed during the subsequent sintering process, giving rise to crack-free, surface-textured ATZ ceramics. Combined with the toughness improvement by triggering additional secondary phase and phase transformation toughening, the ceramics from this methodology showed a significant higher characteristic fracture strength (∼890 MPa) than their equivalents (∼700 MPa) that were laser-textured in the sintered condition, and are competitive with as-sintered (∼914 MPa) ceramics without surface texturing, which challenges the conventional cognition that laser surface-texturing invariably degrades mechanical strength. In addition, the laser textured ATZ ceramics showed a similar hydrothermal aging resistance as the polished ceramics. Our findings address key challenges in laser surface texturing of crack-sensitive ceramic materials. Achieving crack-free surface patterns is essential for ensuring the reliability of ceramics in applications such as dental implants, where laser-modified surface can enhance osseointegration, while the implants' strength must be ensured for structural support and long-term service stability.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"88 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089075","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}

引用次数: 0

Dual-silicon-source engineered FeSiBCr/SiO2 amorphous soft magnetic composites with enhanced corrosion resistance and magnetic properties 双硅源工程FeSiBCr/SiO2非晶软磁复合材料具有增强的耐腐蚀性和磁性能

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-19 DOI: 10.1016/j.jmst.2025.09.013

Mengyi Zhao, Zhaoyuan Liu, Hongxia Li, Wenhan Zhang, Zhong Li, Erpan Zhang, Huawei Rong, Rongzhi Zhao, Xuefeng Zhang

{"title":"Dual-silicon-source engineered FeSiBCr/SiO2 amorphous soft magnetic composites with enhanced corrosion resistance and magnetic properties","authors":"Mengyi Zhao, Zhaoyuan Liu, Hongxia Li, Wenhan Zhang, Zhong Li, Erpan Zhang, Huawei Rong, Rongzhi Zhao, Xuefeng Zhang","doi":"10.1016/j.jmst.2025.09.013","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.09.013","url":null,"abstract":"For amorphous soft magnetic composites (ASMCs), achieving both enhanced magnetic properties and corrosion resistance in harsh environments remains a significant challenge. In this paper, we adopt a dual-silicon-source strategy to fabricate high-performance FeSiBCr/SiO2 ASMCs, where a uniform SiO2 insulation layer is formed on the surface of FeSiBCr particles by using 3-aminopropyltriethoxysilane as a surface modifier and tetraethyl orthosilicate as a hydrolysis precursor. The SiO2 insulation layer significantly elevates the interfacial potential of FeSiBCr particles, effectively inhibiting electron release and retarding anodic oxidation. Meanwhile, it enhances hydrophobicity and suppresses corrosive reactions by isolating the matrix from aggressive media. Notably, the corrosion resistance of FeSiBCr/SiO2-0.45 wt.% ASMC is significantly improved. Simultaneously, FeSiBCr/SiO2-0.45 wt.% ASMC exhibits stable effective permeability of 22.6 within 452 MHz, high direct current bias of 87.7%, wide cut-off frequency of 1.4 GHz, and low power loss of 183.58 mW/cm3 (0.05 T/100 kHz). This paper provides a facile approach to designing corrosion-resistant ASMCs with superior magnetic properties, demonstrating broad application potential in harsh environments.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"26 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089073","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}

引用次数: 0

Effect of natural ageing on the early-stage ageing response of an Al-Mg-Si-Cu alloy 自然时效对Al-Mg-Si-Cu合金早期时效响应的影响

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-19 DOI: 10.1016/j.jmst.2025.08.048

Yurong Yang, Lingfei Cao, Xiaodong Wu, Malcolm J. Couper, Paul A. Rometsch

{"title":"Effect of natural ageing on the early-stage ageing response of an Al-Mg-Si-Cu alloy","authors":"Yurong Yang, Lingfei Cao, Xiaodong Wu, Malcolm J. Couper, Paul A. Rometsch","doi":"10.1016/j.jmst.2025.08.048","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.08.048","url":null,"abstract":"High-performance 6xxx aluminium alloys are critical materials for automotive lightweighting, but they inevitably undergo natural ageing during storage and transportation, during which solute aggregates form and influence subsequent precipitation behavior. In this study, three-dimensional atom probe (3DAP) was used to classify solute aggregates into five size categories, and their impact on early-stage artificial ageing was investigated through microstructural characterisation and model-based property analysis. Results show that natural ageing decreases artificial ageing kinetics, i.e., large aggregates (>225 atoms) form rapidly within 0.13 h in samples without prior natural ageing, which are significantly delayed to about 2 h in samples with prior natural ageing. Aggregates containing 10–22 atoms provide the greatest contribution to strengthening, while aggregates of intermediate size (23–75 atoms) contribute the least during the early ageing. Additionally, smaller aggregates (5–9 atoms) have the greatest impact on resistivity, and as natural ageing time increases, the number fraction of these aggregates increases, leading to a decrease in electrical conductivity. A refined precipitation sequence in under-aged conditions is proposed as: SSSS → co-clusters 5–9 → co-clusters 10–22 → co-clusters 23–75 → zones 76–225 → β'' precipitates >225. These insights highlight the importance of aggregate control in tailoring ageing response and mitigating the adverse effects of natural ageing in automotive aluminium alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"73 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089072","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}

引用次数: 0

Bulk-surface engineering of PEO-based electrolytes via controlled [NMP-Li+] coordination for room-temperature quasi-solid-state lithium metal batteries 室温准固态锂金属电池用可控[NMP-Li+]配位peo基电解质的体面工程

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-18 DOI: 10.1016/j.jmst.2025.09.008

Weiya Li, Shengrui Cui, Hongkai Hu, Kang Dong, Wei Liu, Seung-Taek Myung, Yongcheng Jin

{"title":"Bulk-surface engineering of PEO-based electrolytes via controlled [NMP-Li+] coordination for room-temperature quasi-solid-state lithium metal batteries","authors":"Weiya Li, Shengrui Cui, Hongkai Hu, Kang Dong, Wei Liu, Seung-Taek Myung, Yongcheng Jin","doi":"10.1016/j.jmst.2025.09.008","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.09.008","url":null,"abstract":"The practical deployment of poly(ethylene oxide) (PEO)-based solid electrolytes is significantly hampered by their low room-temperature ionic conductivity, stemming from high PEO crystallinity and strong ethylene oxide (EO)-Li⁺ coordination. Herein, we introduce a bulk-surface engineering strategy utilizing controlled N-methylpyrrolidone (NMP) coordination and a simple two-step drying process. This approach creates an asymmetric-structured PEO electrolyte where distinct molecular environments are engineered in the bulk and at the surface. Experimental and theoretical analyses reveal that controlled NMP coordination during the initial drying establishes a bulk [NMP-Li⁺] solvation structure that effectively weakens EO-Li⁺ binding, dramatically enhancing Li⁺ transport kinetics. Crucially, the subsequent drying phase intentionally depletes NMP from the electrolyte surface, forming a unique NMP-deficient phase. This engineered surface eliminates the thermodynamic instability of NMP towards Li metal, fostering a robust solid electrolyte interphase. Consequently, the asymmetric electrolyte (NP-x) achieves a high room-temperature ionic conductivity (0.14 mS cm−1) and Li⁺ transference number (0.41). Symmetrical Li-Li cells demonstrate ultra-stable cycling exceeding 2000 h at 25°C. The obtained solid-state Li-LiFePO4 cells deliver a high specific capacity (158.4 mAh g−1 at 0.2 C) with 89% capacity retention over 500 cycles, and maintain stable cyclability even at 0 and –15°C. This solvent coordination-mediated bulk-surface decoupling offers a fresh perspective for enhancing the Li+ transport and the interface stability of PEO-based electrolyte.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"88 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089140","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}

引用次数: 0

Robust and thermostable silicon-based aerogels towards highly efficient thermal insulation and microwave absorption 坚固和热稳定的硅基气凝胶，用于高效隔热和微波吸收

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-18 DOI: 10.1016/j.jmst.2025.08.047

Qi Liu, Leilei Zhang, Xinyi Wan, Boshi Song, Zhicong Yan, Shuai Li, Xuemin Yin, Xuanru Ren, Hejun Li

{"title":"Robust and thermostable silicon-based aerogels towards highly efficient thermal insulation and microwave absorption","authors":"Qi Liu, Leilei Zhang, Xinyi Wan, Boshi Song, Zhicong Yan, Shuai Li, Xuemin Yin, Xuanru Ren, Hejun Li","doi":"10.1016/j.jmst.2025.08.047","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.08.047","url":null,"abstract":"Aerogel with good thermal insulation, high temperature resistance, microwave absorption, and excellent mechanical properties is highly desirable. However, it is difficult to balance mechanical and functional characteristics for traditional silicon-based aerogels. Herein, a novel silicon-based aerogels, composed of SiC skeleton and Si3N4 nanowires, were successfully fabricated by using a one-step precursor pyrolysis method. Uniformly distributed Si3N4 nanowires within the SiC ceramic skeleton and across the SiC skeleton/Si3N4 nanowire composite aerogel (SSA) surface create abundant micro-nano pores, thereby endowing the material with exceptional thermal insulation properties with a room-temperature thermal conductivity of 0.064 W/(m K). Furthermore, SSA possessed excellent thermal insulation performance under both a 650°C alcohol lamp and a 1300°C spray gun flame, preserving its structural integrity even when exposed to 1400°C. Benefiting from the synergistic effect of SiC ceramic skeleton and Si3N4 nanowire, SSA has good mechanical performance with a compressive strength up to 17.47 MPa and exhibits effective microwave absorption performance with a strong reflection loss (−50.1 dB) and a wide effective absorption in the full X-Band of 8.2–12.4 GHz. This work provides a simpler and more efficient method and innovative idea for preparing multi-functional thermal insulation aerogel with excellent mechanical strength and superior microwave absorption property.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"56 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078377","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}

引用次数: 0

Tunable EMI shielding-thermal management ultrathin films: Asymmetric magneto-electric gradient architecture enabling shielding-flexibility synergy 可调谐EMI屏蔽-热管理超薄膜：不对称磁电梯度架构，实现屏蔽-柔性协同作用

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-17 DOI: 10.1016/j.jmst.2025.09.007

Yifan Wang, Hailiang Yang, Fengyu Wen, Yashu He, Haoyuan Tan, Jierun Ma, Pengbo Lian, Jianxin Mu

{"title":"Tunable EMI shielding-thermal management ultrathin films: Asymmetric magneto-electric gradient architecture enabling shielding-flexibility synergy","authors":"Yifan Wang, Hailiang Yang, Fengyu Wen, Yashu He, Haoyuan Tan, Jierun Ma, Pengbo Lian, Jianxin Mu","doi":"10.1016/j.jmst.2025.09.007","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.09.007","url":null,"abstract":"Advancements across diverse technical fields are driving increasing demands for electromagnetic interference (EMI) shielding materials. The development of multifunctional EMI shielding films that reconcile high shielding effectiveness with mechanical flexibility is crucial to mitigate secondary EM pollution. This study proposes a structural design strategy that leverages intrinsic properties of distinct layers to achieve multifunctionality and enhanced overall performance. The core design comprises an asymmetric multilayer film with magnetic graphene decorated with metal-organic framework derivatives, highly conductive multi-walled carbon nanotubes, and a high-strength flexible Polyether ether ketone film as the upper, lower, and intermediate support layers, respectively. By modulating magnetic and conductive module thicknesses, the EMI shielding properties become tunable, yielding high shielding effectiveness (58.5 dB) and low reflection coefficient (R) (0.44). Meanwhile, the highly integrated packing enhances the construction of the in-plane heat transfer channels and simultaneously possesses excellent low-pressure electrothermal conversion capability and fast-response photothermal conversion performance. Finite element simulations confirm a tunable shielding mechanism and elucidate the heat-transfer and thermal-management mechanisms under high anisotropic thermal conductivity. This multilayer design achieves a critical balance of flexibility, strength, high EMI shielding/low reflection, and efficient active-passive thermal management, demonstrating significant potential for high-performance electronic applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"37 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078379","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}

引用次数: 0

Data-driven corrosion behavior and prediction of EH36 steel in marine atmosphere: Integrating corrosion big data with machine learning 海洋大气中EH36钢数据驱动腐蚀行为与预测：腐蚀大数据与机器学习的集成

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-17 DOI: 10.1016/j.jmst.2025.08.042

Shihang Lu, Jiaqi He, Nianting Xue, Chao Liu, Zhong Li, Hao Sun, Yizhen Yu, Guangzhou Liu, Wenwen Dou

{"title":"Data-driven corrosion behavior and prediction of EH36 steel in marine atmosphere: Integrating corrosion big data with machine learning","authors":"Shihang Lu, Jiaqi He, Nianting Xue, Chao Liu, Zhong Li, Hao Sun, Yizhen Yu, Guangzhou Liu, Wenwen Dou","doi":"10.1016/j.jmst.2025.08.042","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.08.042","url":null,"abstract":"Marine engineering equipment and facilities face significant atmospheric corrosion challenges. Limitations in corrosion data collection and analysis techniques have hindered a comprehensive understanding of the corrosion behavior of marine steel structures under complex atmospheric environmental conditions. In this study, corrosion big data technology was integrated with machine learning methods to investigate the influence of coupled environmental factors, such as relative humidity (RH), temperature, and various pollutants, on the atmospheric corrosion behavior of EH36 steel. The curve of cumulative electric quantity detected by the corrosion big data sensor indicated that the corrosion rate of EH36 steel over a 6-month (m) exposure period initially accelerated, then decelerated, and finally stabilized. This trend is consistent with the weight loss data, confirming the reliability of corrosion big data monitoring technology. Correlation analysis identified RH and temperature as the key factors influencing corrosion. Higher RH facilitated the formation of an electrolyte film on the EH36 steel surface, accelerating corrosion. In contrast, increased temperature reduced RH, resulting in a negative correlation between temperature and corrosion rate. These findings suggest that RH is the most dominant factor affecting the EH36 steel corrosion in marine atmospheric environments. Furthermore, an extreme gradient boosting (XGB) algorithm capable of handling nonlinear relationships and interactions among atmospheric environmental parameters was constructed. The XGB model demonstrated strong predictive performance in estimating the corrosion rate of marine steel structures, contributing to the safe and reliable operation of marine engineering equipment and facilities.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"56 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078387","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}

引用次数: 0

Big data mining of corrosion for weathering steel in marine atmospheric environments: Discovery and mechanism of critical temperature influencing corrosion resistance 海洋大气环境下耐候钢腐蚀的大数据挖掘：临界温度影响耐蚀性的发现及机理

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-15 DOI: 10.1016/j.jmst.2025.08.045

Bingqin Wang, Xuequn Cheng, Luntao Wang, Zhong Li, Chao Liu, Dawei Zhang, Xiaogang Li

引用次数: 0

Microstructure-thermal conductivity interplay in spark plasma sintered yttrium hydride: effects of sintering parameters on thermal conductivity 放电等离子体烧结氢化钇中微结构-导热系数的相互作用：烧结参数对导热系数的影响

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2025-09-15 DOI: 10.1016/j.jmst.2025.08.046

Yuxin Lin, Xuyang Shang, Keke Hou, Changqing Cao, Hongtao Zeng, Leijie Zhao, Yanhui Wang, Jun Lin

{"title":"Microstructure-thermal conductivity interplay in spark plasma sintered yttrium hydride: effects of sintering parameters on thermal conductivity","authors":"Yuxin Lin, Xuyang Shang, Keke Hou, Changqing Cao, Hongtao Zeng, Leijie Zhao, Yanhui Wang, Jun Lin","doi":"10.1016/j.jmst.2025.08.046","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.08.046","url":null,"abstract":"Yttrium hydride (YHx) has recently attracted considerable attention as a highly promising candidate for the development of compact reactors. This is primarily attributed to its exceptional thermal stability and superior hydrogen storage capacity, which are particularly advantageous under high-temperature conditions. YHx samples were fabricated by spark plasma sintering (SPS) with systematically varied process parameters. Results reveal that the microstructure of sintered YHx exhibits significant variations under different sintering processes. SPS process promotes the densification of sintered YHx monoliths, and the co-evolution of microstructure and grain growth behavior optimizes phonon transport pathways, thereby enhancing the thermal conductivity. The thermal conductivity of sintered YHx decreases with increasing temperature. Optimized under the conditions of 1000°C/65 MPa/5 min, the sintered YHx achieved a relative density of 99.14% and hydrogen content of 1.91 wt.%, exhibiting a maximum thermal conductivity of 67.8 W/(m K) at 300 K. This study conducted an in-depth analysis of the mechanisms influencing thermal conductivity variations and established more comprehensive sintering process-microstructure-thermal conductivity relationships for YHx.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"21 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145068040","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}

引用次数: 0