Materials Letters最新文献_第6页

Modified perovskite surface structure through in situ exsolution of CoFe alloy nanoparticles for efficient oxygen evolution reaction 通过原位溶出纳米CoFe合金修饰钙钛矿表面结构，实现高效析氧反应

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-11 DOI: 10.1016/j.matlet.2025.138920

Hexuan Zhou , Jingang Qi , Juntao Liu , Sifan Qiao , Danyang Liu , Ziyu Zhou , Dan Lin , Lidan Tang , Bing Wang , Wei Zhang

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Computational thermodynamics aided design of Fe-C-Mn alloy exhibiting steady state pearlite growth without substitutional partitioning 计算热力学辅助设计Fe-C-Mn合金的稳态珠光体生长，无取代分配

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-10 DOI: 10.1016/j.matlet.2025.138907

Vikash Kumar Sahu , Snehashish Tripathy , P.S.M Jena , Sandip Ghosh Chowdhury , Gopi Kishor Mandal

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In situ observation of the intergranular deformation behaviour of ME20 magnesium alloy ME20镁合金晶间变形行为的原位观察

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-10 DOI: 10.1016/j.matlet.2025.138909

Yurui Sang , Meilong Feng , Weiming Zhang , Liangshun Huang

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Solution-processed Cu2MnSnS4 nanoparticle film for ultrathin solar cells 超薄太阳能电池用溶液处理Cu2MnSnS4纳米颗粒薄膜

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-10 DOI: 10.1016/j.matlet.2025.138911

Chao Dong , Weili Meng , Juanjuan Qi

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Enhancing the high-temperature resistance of self-healing bio-cementitious composites using tea waste as a bacterial carrier 以茶渣为细菌载体增强自愈性生物胶凝复合材料的耐高温性能

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-10 DOI: 10.1016/j.matlet.2025.138908

Musa Yıldırım , Hacer Bilir Özhan , Hilal Girgin Öz , Hamdi Öğüt

{"title":"Enhancing the high-temperature resistance of self-healing bio-cementitious composites using tea waste as a bacterial carrier","authors":"Musa Yıldırım , Hacer Bilir Özhan , Hilal Girgin Öz , Hamdi Öğüt","doi":"10.1016/j.matlet.2025.138908","DOIUrl":"10.1016/j.matlet.2025.138908","url":null,"abstract":"<div><div>Bacterial composites exhibit advanced self-healing capabilities; however, their effectiveness is often constrained by production processes and environmental conditions. To enhance bacterial viability, protective carriers are required, with natural fibers recently utilized for this purpose. Fiber reinforcement has been shown to improve self-healing efficiency by limiting crack propagation. This study investigates the potential of tea waste as a bacterial carrier in cementitious composites. <em>Bacillus megaterium</em> spores were absorbed into tea waste and incorporated into mortar specimens at varying concentrations. The durability of bacterial composites under high-temperature exposure, a critical yet underexplored aspect, was also evaluated. Mortar specimens containing bacterial tea waste were subjected to different high-temperature conditions in both undamaged and pre-cracked states, followed by compressive strength assessments. Post-exposure microstructural changes were analysed via scanning electron microscopy (SEM). The findings demonstrated that tea waste effectively functioned as a bacterial carrier, exhibiting behaviour comparable to natural fibers. Additionally, it contributed to enhanced residual strength by mitigating thermal stress and promoting calcite precipitation, facilitating damage repair. These results highlight the potential of tea waste as a sustainable and effective medium for improving the durability of bacterial composites against high-temperature effects.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138908"},"PeriodicalIF":2.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Residual stress-assisted static globularization in electron beam powder bed fusion Ti-6Al-4V from powder recovery and hot isostatic pressing 粉末回收和热等静压在电子束粉末床熔合Ti-6Al-4V过程中的残余应力辅助静态球化

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-10 DOI: 10.1016/j.matlet.2025.138816

Nicholas Derimow , Thomas A. Berfield , Keenan Hanson , Jake T. Benzing , Nik Hrabe

引用次数: 0

Enhanced hardness and magnetic properties of a CoCrCuFeNi high-entropy alloy under gradient magnetic fields 梯度磁场增强CoCrCuFeNi高熵合金的硬度和磁性能

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-10 DOI: 10.1016/j.matlet.2025.138910

Jianjun Guo, Yunfeng Liu, Chen Wei, Jun Wang, Jinshan Li

引用次数: 0

Macro-micro analysis of mechanical properties of high-strength anchor cable steel under static and dynamic loading 静、动荷载作用下高强锚索钢力学性能的宏微观分析

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-10 DOI: 10.1016/j.matlet.2025.138906

Junchen Li , Guoli Zu , Heng Zhang , Zhuoyue Sun , Sifeng He , Penghe Zhou

{"title":"Macro-micro analysis of mechanical properties of high-strength anchor cable steel under static and dynamic loading","authors":"Junchen Li , Guoli Zu , Heng Zhang , Zhuoyue Sun , Sifeng He , Penghe Zhou","doi":"10.1016/j.matlet.2025.138906","DOIUrl":"10.1016/j.matlet.2025.138906","url":null,"abstract":"<div><div>To reveal the static and dynamic fracture mechanisms of high-strength anchor cables commonly used in rockburst-prone roadways, this study conducted mechanical performance tests on three types of coal mine anchor cables using a computer-controlled electro-hydraulic servo testing machine and a self-developed drop hammer impact test apparatus. Scanning electron microscopy (SEM) analysis of fracture surfaces under static and dynamic loading revealed a transition in fracture mechanisms under high strain rates. Test results showed: Under high-speed impact, fractures occurred more rapidly, with significantly reduced plastic cracking and increased brittle failure. Under high-speed impact, the fracture of anchor cables occurs more rapidly, with an average reduction in elongation after fracture exceeding 40%. Key factors influenced dynamic mechanical performance included static load-bearing capacity, ductility, and brittleness. The findings provided valuable insights for the design and protection of anchor cables in rockburst-prone roadways.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138906"},"PeriodicalIF":2.7,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Enhancing UHMWPE tribology via mussel-inspired PDA coatings 通过贻贝启发的PDA涂层增强超高分子量聚乙烯的摩擦学性能

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-09 DOI: 10.1016/j.matlet.2025.138905

Xinqi Zou, Zhenghao Ge, Chaobao Wang, Yuyang Xi

引用次数: 0

A comparative analysis of nylon 610 production: Thermal efficiency and environmental considerations 尼龙610生产的比较分析：热效率和环境考虑

IF 2.7 4区材料科学

Materials Letters Pub Date : 2025-06-09 DOI: 10.1016/j.matlet.2025.138904

Akram Fadhl Al-mahmodi, Yamuna Munusamy

{"title":"A comparative analysis of nylon 610 production: Thermal efficiency and environmental considerations","authors":"Akram Fadhl Al-mahmodi, Yamuna Munusamy","doi":"10.1016/j.matlet.2025.138904","DOIUrl":"10.1016/j.matlet.2025.138904","url":null,"abstract":"<div><div>Nylon 610, a versatile polyamide, is widely used in industrial applications requiring high mechanical and thermal stability. This study investigates the synthesis of nylon 610 using two different methods: sebacic acid and sebacoyl chloride. This study conducts a comparative analysis to evaluate each method’s thermal properties, reaction conditions, environmental impact, and feasibility. Differential Scanning Calorimetry (DSC), Thermogravimetric analysis (TGA), and Fourier Transform Infrared Spectroscopy (FTIR) were employed to characterize the resulting polymers. The results demonstrated that nylon 610 synthesized using sebacic acid exhibited higher thermal stability, greater enthalpy of melting, and sharper crystallization peaks, indicating a more organized polymer structure. Additionally, the sebacic acid method proved to be safer and environmentally friendly, producing water as the sole by-product, which is advantageous for large-scale applications. In contrast, the sebacoyl chloride method, while faster, required more stringent safety measures due to the production of hydrochloric acid (HCl). This study highlights the sebacic acid method as a more sustainable and efficient approach for synthesizing nylon 610, particularly for applications demanding high thermal performance.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138904"},"PeriodicalIF":2.7,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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