发布求助
文献互助 智能选刊 最新文献

Materials Letters最新文献

筛选
英文 中文
Microstructural investigation of the deformed volume beneath quasi-static and dynamic indentation in Ni single crystal
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-31 DOI: 10.1016/j.matlet.2025.138506
Kehua Wang , Jian Chen , Yanhuai Li , Zezhou Li , Xiao Tao , Wubian Tian
{"title":"Microstructural investigation of the deformed volume beneath quasi-static and dynamic indentation in Ni single crystal","authors":"Kehua Wang ,&nbsp;Jian Chen ,&nbsp;Yanhuai Li ,&nbsp;Zezhou Li ,&nbsp;Xiao Tao ,&nbsp;Wubian Tian","doi":"10.1016/j.matlet.2025.138506","DOIUrl":"10.1016/j.matlet.2025.138506","url":null,"abstract":"<div><div>The deformed volume beneath the Ni (100) single crystal after quasi-static (&lt;10<sup>1</sup> s<sup>−1</sup>) and dynamic indentation (&gt;10<sup>3</sup> s<sup>−1</sup>) tests were comparatively investigated. The lattice rotation and microstructure were explored using on-axis TKD and TEM methods. The results show that quasi-static indentation induces symmetrical lattice rotation and uniformly distributed sub-grains, while dynamic indentation shows asymmetrical crystal rotation and severe plasticity localization close to the edge of indenter. The observed difference is well interpreted by the dislocation rearrangement and dislocation emission mechanism in quasi-static and dynamic indentation respectively. The heterogeneity of plasticity in dynamic indentation can be attributed to the higher contact stress and pre-existing surface defect on the edge of indenter leading to the concentrated dislocation emission.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138506"},"PeriodicalIF":2.7,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746830","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
Surface texturing of poly vinyl alcohol/ bioactive glass composite fibrous mats for improved cell viability of fibroblast cells: A potential approach for improved wound healing
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138492
Aleena Tariq , Muhammad Daim Abbas , Aqsa Aizaz , Mohamed Abbas , Faiza Benabdallah , Muhammad Atiq Ur Rehman
{"title":"Surface texturing of poly vinyl alcohol/ bioactive glass composite fibrous mats for improved cell viability of fibroblast cells: A potential approach for improved wound healing","authors":"Aleena Tariq ,&nbsp;Muhammad Daim Abbas ,&nbsp;Aqsa Aizaz ,&nbsp;Mohamed Abbas ,&nbsp;Faiza Benabdallah ,&nbsp;Muhammad Atiq Ur Rehman","doi":"10.1016/j.matlet.2025.138492","DOIUrl":"10.1016/j.matlet.2025.138492","url":null,"abstract":"<div><div>Herein, polyvinyl alcohol (PVA)/ bioactive glass (BG) mats were developed using an electrospinning technique and later embossed to modify the surface roughness, wettability, and cell biology. Fabricated mats were characterized by surface topography, wettability, and thermal properties. Atomic Force Microscopy (AFM) images confirmed that the embossing process significantly modified surface roughness, increasing the average roughness from 82.645 nm to 327.92 nm. This increase in roughness improved fibroblast cell attachment. Fourier Transform Infrared Spectroscopy (FTIR) analysis confirmed the presence of chemical bonds, including Si-O-Si stretching from bioactive glass (BG) at 1000–1100 cm<sup>−1</sup>, the hydroxyl (OH) stretching at 3000 cm<sup>−1</sup> from PVA, and the C-O stretching at 1140 cm<sup>−1</sup> attributed to the BG and PVA interaction in the mats. Thermo-Gravimetric Analysis (TGA) highlighted the composition of PVA and BG in the fabricated mats. The wettability analysis indicates a notable increase in the hydrophilic character as the contact angle of the mats after embossing significantly dropped from 19 ± 2° to 12 ± 2°. These findings suggested that the embossed PVA/BG mats increase fibroblast cell viability compared to the as-fabricated PVA/BG mats.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138492"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746949","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
Enhanced geopolymer composites with conductive fiber reinforcement: Mechanical, microstructural, and electrical curing performance
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138495
Nejib Ghazouani , Abdellatif Selmi , Zeeshan Ahmad , Nabil Ben Kahla , Abdelkader Mabrouk
{"title":"Enhanced geopolymer composites with conductive fiber reinforcement: Mechanical, microstructural, and electrical curing performance","authors":"Nejib Ghazouani ,&nbsp;Abdellatif Selmi ,&nbsp;Zeeshan Ahmad ,&nbsp;Nabil Ben Kahla ,&nbsp;Abdelkader Mabrouk","doi":"10.1016/j.matlet.2025.138495","DOIUrl":"10.1016/j.matlet.2025.138495","url":null,"abstract":"<div><div>This study investigates the effects of conductive additives—basalt fiber (BF), steel fiber (SF), wire erosion (WE), and carbon black (CB)—on the mechanical and microstructural properties of geopolymer (GP) cured via electricity-driven thermal curing. A series of 13 GP mixes, incorporating varying fiber concentrations (0.25 %, 0.50 %, 0.75 %), were evaluated for compressive strength (CS), flexural strength (FS), and ultrasonic pulse velocity (UPV). The optimal formulation with 0.5 % WE, exhibited a peak CS of 65.34 MPa, a 94.36 % increase over the control. FS peaked at 16 MPa for 0.75 % WE. UPV results indicated enhanced material densification, with 0.25 % BF reaching a maximum of 2317.83 m/s. SEM/EDX analysis confirmed improved microstructural integrity, while XRD analysis verified geopolymerization.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138495"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737801","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
Construction of dense SiO2 layers by ferric phytate to enhance flame retardancy of polydimethylsiloxane foam composites
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138486
Mengmeng Yang, Xin He, Yong Fang, Hu Bi, Guodong Jiang, Yucai Shen
{"title":"Construction of dense SiO2 layers by ferric phytate to enhance flame retardancy of polydimethylsiloxane foam composites","authors":"Mengmeng Yang,&nbsp;Xin He,&nbsp;Yong Fang,&nbsp;Hu Bi,&nbsp;Guodong Jiang,&nbsp;Yucai Shen","doi":"10.1016/j.matlet.2025.138486","DOIUrl":"10.1016/j.matlet.2025.138486","url":null,"abstract":"<div><div>Polydimethylsiloxane (PDMS) foam is a widely used porous material with excellent properties across various fields. However, its flammability poses a significant challenge to its broader application. In this study, ferric phytate (PA-Fe) was introduced as a novel flame retardant into PDMS foam. Experimental and molecular dynamics (MD) simulation results reveal that its exceptional flame retardancy derives from the formation of dense SiO<sub>2</sub> layers induced by Fe<sup>3+</sup> during combustion. These SiO<sub>2</sub> layers exhibit more dense structure compared to those generated by pure PDMS foam combustion, providing the foam with enhanced self-extinguishing properties. This study offers a novel strategy for developing highly flame-retardant silicone materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138486"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738201","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
Growth and ultralow thermal conductivity of beta-Ga2O3 nanowires
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138425
Jiafu Zhong , ZhiJie Wang , Zuoran Li , Lijie Zhu , Shiyun Lou , Shaomin Zhou
{"title":"Growth and ultralow thermal conductivity of beta-Ga2O3 nanowires","authors":"Jiafu Zhong ,&nbsp;ZhiJie Wang ,&nbsp;Zuoran Li ,&nbsp;Lijie Zhu ,&nbsp;Shiyun Lou ,&nbsp;Shaomin Zhou","doi":"10.1016/j.matlet.2025.138425","DOIUrl":"10.1016/j.matlet.2025.138425","url":null,"abstract":"<div><div>β-Ga<sub>2</sub>O<sub>3</sub> nanowires were prepared on C-plane sapphire substrates with coated Au serving as a catalyst via chemical vapor deposition. The morphologies, structural properties and elemental composition of the products were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and Raman spectroscopy. The results show that the products are single crystalline β-Ga<sub>2</sub>O<sub>3</sub> nanowires with the diameter ranging from 40 to 100 nm and the length ranging from 10 to 50 μm, respectively. In addition, the optical and thermal properties of the β-Ga<sub>2</sub>O<sub>3</sub> nanowires have been studied by photoluminescence spectrometer and laser thermal conductivity instrument. These β-Ga<sub>2</sub>O<sub>3</sub> nanowires have exhibited a broad blue-green emission with a peak at 487 nm and an ultralow thermal conductivity (0.026 W/m K) in the room-temperature, which is potential application in the future.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"392 ","pages":"Article 138425"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792269","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
Microstructural evolution and hierarchical synergy in maraging steels: Tailoring strength and ductility through austenite reversion
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138494
M. Masoumi , B. Fonseca , M. Béreš , M.J. Silva-Neto , H.F.G. Abreu
{"title":"Microstructural evolution and hierarchical synergy in maraging steels: Tailoring strength and ductility through austenite reversion","authors":"M. Masoumi ,&nbsp;B. Fonseca ,&nbsp;M. Béreš ,&nbsp;M.J. Silva-Neto ,&nbsp;H.F.G. Abreu","doi":"10.1016/j.matlet.2025.138494","DOIUrl":"10.1016/j.matlet.2025.138494","url":null,"abstract":"<div><div>This study investigates the microstructural evolution and phase transformations in advanced maraging steel, emphasizing the interplay between reverted austenite, martensite, and nanoprecipitates. X-ray diffraction confirmed 9.8 ± 0.3 vol% retained austenite, while nanoindentation revealed its stress-assisted transformation, enhancing ductility via the TRIP effect. Aging at 560 °C preserved the martensitic laths, promoting microchemical diffusion and austenite reversion. EBSD analysis highlighted Kurdjumov-Sachs orientation relationships and dislocation dynamics, linking lattice distortion to mechanical strength. This hierarchical nanostructural synergy enhances ductility and toughness with minimal reduction in strength by combining hard nanoprecipitates and soft reverted austenite within the martensitic structure.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138494"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746831","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
Improving the electromagnetic interference shielding performance of CNTs/copper composites by interface modification with a carbon buffer layer
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138489
Yingying Yu , Cheng Yang , Qian Gong , Yutao Niu , Huili Fu , Zhenmin Luo , Yongyi Zhang
{"title":"Improving the electromagnetic interference shielding performance of CNTs/copper composites by interface modification with a carbon buffer layer","authors":"Yingying Yu ,&nbsp;Cheng Yang ,&nbsp;Qian Gong ,&nbsp;Yutao Niu ,&nbsp;Huili Fu ,&nbsp;Zhenmin Luo ,&nbsp;Yongyi Zhang","doi":"10.1016/j.matlet.2025.138489","DOIUrl":"10.1016/j.matlet.2025.138489","url":null,"abstract":"<div><div>Electromagnetic interference (EMI) poses a significant threat to human health and electronic devices, necessitating the development of effective shielding materials. While metals offer excellent EMI shielding performance, their weight, corrosion susceptibility, and cost limit their applications. Composites of carbon nanotubes (CNTs) and metals are promising candidates for light-weight EMI shielding materials, while compromise always has to be made between the EMI shielding performance and the weight. This study investigates a novel approach to enhance the EMI shielding performance of CNT/copper composites avoiding weight increase by introducing a highly disordered graphite nanosheet (HDGN) buffer layer between the CNTs and copper. The HDGN buffer effectively fills gaps in the CNT network, creating a smooth and continuous interface with the copper layer. This modification significantly improves the electrical conductivity and EMI shielding effectiveness (EMI SE) of the composites. This study highlights the crucial role of the metal/carbon interface in determining the EMI shielding performance, offering valuable insights for the design and optimization of lightweight, flexible, and efficient EMI shielding materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138489"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738441","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
Ultra-high ratio of ultimate strength to yield strength in L12 precipitates strengthening medium-entropy alloy
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138496
Mingjun Qiu , Bingkai Wang , Ping Huang , Fei Wang
{"title":"Ultra-high ratio of ultimate strength to yield strength in L12 precipitates strengthening medium-entropy alloy","authors":"Mingjun Qiu ,&nbsp;Bingkai Wang ,&nbsp;Ping Huang ,&nbsp;Fei Wang","doi":"10.1016/j.matlet.2025.138496","DOIUrl":"10.1016/j.matlet.2025.138496","url":null,"abstract":"<div><div>Strengthening via L1<sub>2</sub> nanoprecipitates is an effective approach to achieving excellent comprehensive mechanical properties in multi-principal element alloys (MPEAs). Although the conventional conflict between strength and ductility persists to a large extent, the difference between yield strength and ultimate strength is usually so small that it reflects weak deformation resistance of materials after yielding. In this study, we designed CoCrFeNiAlTi medium-entropy alloy (MEA), which exhibits yield strength of 801 MPa, ductility of 36.2 %, and intriguingly a very high ratio of ultimate strength to yield strength, demonstrating unusually strong strain hardening. Experimental results and analysis indicate that such comprehensive strength-plasticity synergy and strain-hardening behavior may be mainly attributed to the composition design and heterogeneous microstructure in the aged MEA.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138496"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738447","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
Mechanistic insights and performance evaluation of enhanced U(VI) capture by phosphorylated chitosan-functionalized biochar in aqueous systems
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138483
Haoyu Luo , Shuibo Xie
{"title":"Mechanistic insights and performance evaluation of enhanced U(VI) capture by phosphorylated chitosan-functionalized biochar in aqueous systems","authors":"Haoyu Luo ,&nbsp;Shuibo Xie","doi":"10.1016/j.matlet.2025.138483","DOIUrl":"10.1016/j.matlet.2025.138483","url":null,"abstract":"<div><div>In this study, phosphorylated chitosan-functionalized biochar (PCTS) was prepared by compounding phosphorylated chitosan with almond shell biochar through an in situ precipitation method. The experimental results indicated that PCTS achieved a maximum U(VI) removal efficiency of 98.85 % under conditions of pH 5 and 308 K. The adsorption process followed the Freundlich isothermal model, suggesting a multilayer adsorption mechanism. FTIR and XPS analyses revealed that U(VI) formed complexes with reactive phosphoric acid groups, while a small fraction of U(VI) was reduced by amino sites to the lower U(IV) state. These research findings highlighted the potential applicability of the PCTS composites for uranium-contaminated water remediation.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138483"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738448","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
Synthesis of oxides utilizing the explosive reaction characteristics of graphene oxide
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-03-29 DOI: 10.1016/j.matlet.2025.138490
He Zhao , Bocheng Meng , Yanhong Wang , Baoyan Liang
{"title":"Synthesis of oxides utilizing the explosive reaction characteristics of graphene oxide","authors":"He Zhao ,&nbsp;Bocheng Meng ,&nbsp;Yanhong Wang ,&nbsp;Baoyan Liang","doi":"10.1016/j.matlet.2025.138490","DOIUrl":"10.1016/j.matlet.2025.138490","url":null,"abstract":"<div><div>Explosion method is a new pathway for preparing oxides. However, it has several drawbacks, including complex process, poor safety, high impurities, and uneven particle size distribution. This study proposes a simple, safe, and easily controllable explosive synthesis method. This study utilizes the explosive reaction of graphene oxide under low-temperature heating to induce the decomposition of hydroxides and form oxides. The research results indicate that after the explosion reaction, hydroxides completely decompose and form oxides (MgO, ZnO, and TiO<sub>2</sub>). The impact force of the explosion was relatively small, effectively avoiding contamination. The SEM results indicate that the average grain sizes of MgO, TiO<sub>2</sub>, and ZnO are 41.7, 23.8, and 58.2 nm, respectively. Their grain size distribution was also relatively uniform, and no abnormally grown grains were observed.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138490"},"PeriodicalIF":2.7,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737802","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信