Materials Letters最新文献_第10页

Balancing height, dilution and hardness in FeCoCrNiAl–Cr₃C₂ composite coatings via small-sample multi-objective optimization. 小样本多目标优化FeCoCrNiAl-Cr₃C₂复合涂层高度、稀释度和硬度的平衡

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-27 DOI: 10.1016/j.matlet.2026.140165

Qing Xu, Yuzhen Yu, Weikang Ding, Hao Jiang

{"title":"Balancing height, dilution and hardness in FeCoCrNiAl–Cr₃C₂ composite coatings via small-sample multi-objective optimization.","authors":"Qing Xu, Yuzhen Yu, Weikang Ding, Hao Jiang","doi":"10.1016/j.matlet.2026.140165","DOIUrl":"10.1016/j.matlet.2026.140165","url":null,"abstract":"<div><div>A small-sample, multi-objective optimization strategy is developed for FeCoCrNiAl-Cr₃C₂ composite coatings deposited on 316 L stainless steel by laser-based additive manufacturing. Twenty-nine designed runs quantify the effects of laser power, scanning speed, powder feed rate and spot diameter on coating height (<em>H</em>), dilution ratio (<span><math><mi>η</mi></math></span>) and Vickers microhardness (<span><math><mi>HV</mi></math></span>). Quadratic response-surface models reproduce the experimental responses with coefficients of determination of 0.95–0.98, capturing variations of <em>H</em>= 0.69–0.94 mm, <span><math><mi>η</mi></math></span> = 10.0–21% and <em>HV</em> = 700–790 HVcompared with ∼200 HV for 316 L. These surrogates are embedded in a hybrid NSGA-II-MOPSO algorithm to generate Pareto fronts, revealing a narrow operating window where <em>H</em> ≥ 0.90 mm, <span><math><mi>η</mi></math></span> ≈ 10–15% and <span><math><mi>HV</mi></math></span> ≥ 750 HV can be balanced. TOPSIS ranking identifies a compromise parameter set, for which validation experiments show prediction errors below ∼2% for <em>H</em>, <span><math><mi>η</mi></math></span> and<span><math><mspace></mspace><mi>HV</mi></math></span>, and a dense FeCoCrNiAl matrix reinforced by a bimodal population of Cr₃C₂ particles and fragmented carbides, consistent with the high hardness regime. The results demonstrate that RSM-assisted evolutionary optimization can reliably guide process design for high-entropy composite coatings under small-sample conditions.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"408 ","pages":"Article 140165"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146075376","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

A novel fire-resistant piezoresistive sponge for monitoring infant sleep behaviors and realizing edge-hazard warnings 一种用于监测婴儿睡眠行为并实现边缘危险预警的新型耐火压阻海绵

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-10 DOI: 10.1016/j.matlet.2026.140093

Xiangwen Gu, Haosen Xu, Ziqiang Xu, Xin Luo, Jinchen Liu, Yubao Cui, Tongqiang Shen

引用次数: 0

Difference in charge carrier recombination among undoped, Nb-, and La-doped SrTiO3 single crystals 未掺杂、Nb掺杂和la掺杂SrTiO3单晶载流子复合的差异

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-14 DOI: 10.1016/j.matlet.2026.140110

Endong Zhang, Masashi Kato

引用次数: 0

Temperature-dependent gradient structures in AZ31B magnesium alloy processed by torsion deformation 扭转变形AZ31B镁合金中温度相关的梯度结构

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.matlet.2026.140152

Weiqin Tang , Zizheng Cao , Dayong Li , Yinghong Peng

引用次数: 0

Sustained and tumor-selective drug release from collagen nanocarriers for improved anticancer activity 从胶原纳米载体持续和肿瘤选择性释放药物以提高抗癌活性

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-17 DOI: 10.1016/j.matlet.2026.140126

Senthil Rethinam

{"title":"Sustained and tumor-selective drug release from collagen nanocarriers for improved anticancer activity","authors":"Senthil Rethinam","doi":"10.1016/j.matlet.2026.140126","DOIUrl":"10.1016/j.matlet.2026.140126","url":null,"abstract":"<div><div>Collagen nanoparticles (CNs) were developed using a desolvation method and were loaded with an anticancer drug (doxorubicin) for targeted oral cancer therapy. The CNs exhibited a uniform spherical morphology with particle sizes ranging from 98 to 180 nm, as confirmed by high-resolution scanning electron microscopy (HRSEM). The drug loading efficiency (DL) reached 12–13%, with an encapsulation efficiency (EE) of 78–80%, demonstrating strong drug retention within the collagen matrix. In vitro release studies demonstrated pH-responsive behavior, with cumulative release of 93% at pH 5.5 and 65% at pH 7.4 over 120 h, indicating enhanced drug liberation under tumor-like acidic conditions. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assays demonstrated a time-dependent reduction in oral cancer cell viability following treatment with drug-loaded collagen nanoparticles, with viability decreasing to 79% at 48 h and further to 53% at 72 h, indicating enhanced and sustained cytotoxicity compared to the free drug. Live/dead fluorescence imaging further confirmed the increased red fluorescence in the treated groups, indicating higher cell death. Overall, the results demonstrated that CNs provide efficient drug loading, sustained pH-sensitive release, and enhanced anticancer activity against oral cancer cells.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"408 ","pages":"Article 140126"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025056","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

Revealing the enhanced electrochemical capabilities of 2D-Bi2WO6 for energy storage applications 揭示了2D-Bi2WO6在储能应用中的增强电化学能力

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-18 DOI: 10.1016/j.matlet.2026.140117

Preety Yadav , Neeraj Dhariwal , Manju Kumari , Taro Ueda , Takeo Hyodo , Meenu Chahar , Poonam Jain , Yogesh Kumar , Anu Rana , Vinod Kumar , O.P. Thakur

{"title":"Revealing the enhanced electrochemical capabilities of 2D-Bi2WO6 for energy storage applications","authors":"Preety Yadav , Neeraj Dhariwal , Manju Kumari , Taro Ueda , Takeo Hyodo , Meenu Chahar , Poonam Jain , Yogesh Kumar , Anu Rana , Vinod Kumar , O.P. Thakur","doi":"10.1016/j.matlet.2026.140117","DOIUrl":"10.1016/j.matlet.2026.140117","url":null,"abstract":"<div><div>In this study, silver nanoparticles were successfully deposited onto Bi<sub>2</sub>WO<sub>6</sub> nanosheets through a facile hydrothermal synthesis route, producing Ag-decorated Bi<sub>2</sub>WO<sub>6</sub> nanocomposites. The integration of Ag nanoparticles substantially improved the electrochemical behaviour. The optimized Ag/Bi<sub>2</sub>WO<sub>6</sub> electrode exhibited an impressive specific capacitance of 1021.52 F/g, which is considerably higher than that of pristine Bi<sub>2</sub>WO<sub>6</sub> (245.51 F/g) at 1 A/g in an electrolyte of 1 M KOH, and retained excellent cycling stability over 5000 continuous charge-discharge cycles with a capacitive retention of 87.3% at 10 A/g. The Ag/Bi<sub>2</sub>WO<sub>6</sub> electrode exhibits an energy density of 22.7 Wh/kg at a power density of 206.05 W/kg. These outcomes confirm the strong synergistic interaction between Ag and Bi<sub>2</sub>WO<sub>6</sub>, establishing the composite as a promising electrode material for high-performance supercapacitor technologies.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"408 ","pages":"Article 140117"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025059","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

Effect of solution treatment temperature on the mechanical properties of age-hardened C17200 CuBe micro-wires 固溶温度对时效硬化C17200立方微丝力学性能的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-12 DOI: 10.1016/j.matlet.2026.140107

Bingyan Ou , Daibo Zhu , Zhirui Liu , Weihao zhang , Canwei Zhang , Tan Han , Yang liu

引用次数: 0

Dental cements containing Bi2O3: Physical properties and radiopacity 含Bi2O3的牙科胶合剂：物理性质和放射不透明性

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-14 DOI: 10.1016/j.matlet.2026.140094

Giovane Santos Duarte , Anne Carolinne Melo Costa , Helder de Lucena Pereira , Denise Nobrega Diniz , Marcelino Guedes Lima , Elvia Leal , Ana Cristina Figueiredo de Melo Costa

{"title":"Dental cements containing Bi2O3: Physical properties and radiopacity","authors":"Giovane Santos Duarte , Anne Carolinne Melo Costa , Helder de Lucena Pereira , Denise Nobrega Diniz , Marcelino Guedes Lima , Elvia Leal , Ana Cristina Figueiredo de Melo Costa","doi":"10.1016/j.matlet.2026.140094","DOIUrl":"10.1016/j.matlet.2026.140094","url":null,"abstract":"<div><div>In this study, bismuth oxide (Bi<sub>2</sub>O<sub>3</sub>) was synthesized at a pilot scale by combustion reaction using urea and glycine as fuels, with the aim of its application as a radiopacifying agent in dental cements. The urea- and glycine-derived oxides are hereafter referred to as BiU and BiG. The oxide was incorporated into a carboxymethylcellulose–glycerin–water hydrogel (30 wt%), producing the cements CBU (cement containing BiU) and CBG (cement containing BiG). X-ray diffraction (XRD) confirmed the formation of the α-Bi<sub>2</sub>O<sub>3</sub> phase for both routes. Scanning electron microscopy (SEM) micrographs showed that BiU consists of smaller, homogeneous, and porous particle agglomerates, whereas BiG consists of larger, heterogeneous agglomerates. The CBU exhibited higher density and radiopacity (8–9 mm Al), while the CBG showed lower radiopacity (7 mm Al) and higher flowability. The results demonstrate that the fuel type determines the Bi<sub>2</sub>O<sub>3</sub> microstructure and, consequently, its radiopacity and flow behavior in the cements.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"408 ","pages":"Article 140094"},"PeriodicalIF":2.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146025248","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}

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Tailoring ZnO nanowire morphology by substrate-position-controlled VLS growth for label-free protein sensing 通过底物位置控制的VLS生长来剪裁ZnO纳米线的形态，用于无标记蛋白质传感

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.matlet.2026.140137

Amauri Serrano-Lázaro , Karina Portillo-Cortez , Citlali Sánchez Aké , Rosalba Castañeda-Guzmán , Ma. Beatriz de la Mora Mojica , Juan C. Durán-Álvarez

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High sodium storage performance of carbon coated Na4MnAl(PO4)3 cathode material prepared by PVP-assisted sol-gel method pvp辅助溶胶-凝胶法制备碳包覆Na4MnAl(PO4)3正极材料的高储钠性能

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-01 Epub Date: 2026-01-21 DOI: 10.1016/j.matlet.2026.140132

Honghai Zhang, Jiaxin Ou, Wenqing Xu, Ye Sun, Yuchao He, Zongyi Wen, Yachun Lu, Jianwen Yang, Quanqi Chen

引用次数: 0