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Strong and formable Mg-Zn-Ca alloy sheet with layered heterogeneous microstructure 具有层状非均匀组织的强成形Mg-Zn-Ca合金板材
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-25 DOI: 10.1016/j.matlet.2025.138989
T. Nakata , C. Xu , K. Yagi , L. Geng , S. Kamado
{"title":"Strong and formable Mg-Zn-Ca alloy sheet with layered heterogeneous microstructure","authors":"T. Nakata ,&nbsp;C. Xu ,&nbsp;K. Yagi ,&nbsp;L. Geng ,&nbsp;S. Kamado","doi":"10.1016/j.matlet.2025.138989","DOIUrl":"10.1016/j.matlet.2025.138989","url":null,"abstract":"<div><div>We fabricated a lean Mg-1.52mass%Zn-0.09mass%Ca alloy sheet having a unique layered heterogeneous microstructure, which consisted of a recrystallized surface-layer and an internal-layer with non-recrystallized grains. An excellent 0.2 % proof stress (PS) and limiting dome height (LDH) were simultaneously achieved. The PS along the rolling direction and LDH reached 263 MPa and 7.4 mm, respectively. The key factor was a degree of recrystallization, and the good LDH was obtained with the PS when the depth of the recrystallized region was ∼100 μm, establishing a new design guidance for the development of strong and formable Mg alloy sheets for automotive sheet applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 138989"},"PeriodicalIF":2.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518641","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
High-temperature wear resistance of in-situ B4C particle reinforced TC4 coatings fabricated by laser directed energy deposition 激光定向能沉积原位B4C颗粒增强TC4涂层的高温耐磨性
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-25 DOI: 10.1016/j.matlet.2025.138988
Wenlong Wang, Kai Zhang, Weijun Liu
{"title":"High-temperature wear resistance of in-situ B4C particle reinforced TC4 coatings fabricated by laser directed energy deposition","authors":"Wenlong Wang,&nbsp;Kai Zhang,&nbsp;Weijun Liu","doi":"10.1016/j.matlet.2025.138988","DOIUrl":"10.1016/j.matlet.2025.138988","url":null,"abstract":"<div><div>In this study, B<sub>4</sub>C particles were introduced into Ti-based coatings to induce the in-situ formation of reinforcing phases, including TiC, TiB, and TiB<sub>2</sub>. XRD and EBSD analyses revealed that these reinforcing phases were predominantly distributed along grain boundaries, effectively refining the grain structure and increasing the grain boundary density. Consequently, both the KAM and GND values increased, enhancing the coating’s resistance to plastic deformation. High-temperature tribological tests demonstrated that the reinforcing phases and their synergistic strengthening mechanisms significantly reduced the coefficient of friction and wear rate, improved the wear morphology, and enhanced the coating’s high-temperature wear resistance and microhardness. These findings provide theoretical guidance and technical support for the development of high-performance Ti-based protective coatings for high-temperature applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 138988"},"PeriodicalIF":2.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513616","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
Thermoelectric power generation based on p-Sb2Te3 / n-Bi2Te3 modules as prepared by Spark Plasma Sintering 火花等离子烧结制备基于p-Sb2Te3 / n-Bi2Te3模块的热电发电
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-25 DOI: 10.1016/j.matlet.2025.138984
Surasak Ruamruk , Atsuko Kosuga , Ryoji Funahashi , Wanatchaporn Namhongsa , Ronariddh Nakhowong , Athorn Vora-ud , Somporn Thaowonkaew , Tosawat Seetawan , Anek Charoenphakdee
{"title":"Thermoelectric power generation based on p-Sb2Te3 / n-Bi2Te3 modules as prepared by Spark Plasma Sintering","authors":"Surasak Ruamruk ,&nbsp;Atsuko Kosuga ,&nbsp;Ryoji Funahashi ,&nbsp;Wanatchaporn Namhongsa ,&nbsp;Ronariddh Nakhowong ,&nbsp;Athorn Vora-ud ,&nbsp;Somporn Thaowonkaew ,&nbsp;Tosawat Seetawan ,&nbsp;Anek Charoenphakdee","doi":"10.1016/j.matlet.2025.138984","DOIUrl":"10.1016/j.matlet.2025.138984","url":null,"abstract":"<div><div>In this work, the thermoelectric (TE) modules of <em>p</em>-Sb<sub>2</sub>Te<sub>3</sub> and <em>n</em>-Bi<sub>2</sub>Te<sub>3</sub> were fabricated by using the Spark Plasma Sintering (SPS) process. Based on TE properties measurement, the <em>zT</em> value was calculated to be achieved of 0.89 for Sb<sub>2</sub>Te<sub>3</sub> and 0.70 for Bi<sub>2</sub>Te<sub>3</sub> at 523 K. A thermoelectric generator (TEG) module comprising eight p–n couples was fabricated and tested, achieving a maximum electrical power output of approximately 0.37 W at the temperature difference of 473 K.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 138984"},"PeriodicalIF":2.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144548802","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
Preparation and properties of high specific capacitance TiO2-Al2O3 composite powder-layered anode aluminum foils 高比电容TiO2-Al2O3复合粉末层状阳极铝箔的制备及性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-24 DOI: 10.1016/j.matlet.2025.138985
Xianhong Gong , Rui Yang , Guili He , Hui Liu , Yu Pu , Huimin Mao , Chen Wang , Guiming Xie , Jianzhong Wang , Rengui Xiao
{"title":"Preparation and properties of high specific capacitance TiO2-Al2O3 composite powder-layered anode aluminum foils","authors":"Xianhong Gong ,&nbsp;Rui Yang ,&nbsp;Guili He ,&nbsp;Hui Liu ,&nbsp;Yu Pu ,&nbsp;Huimin Mao ,&nbsp;Chen Wang ,&nbsp;Guiming Xie ,&nbsp;Jianzhong Wang ,&nbsp;Rengui Xiao","doi":"10.1016/j.matlet.2025.138985","DOIUrl":"10.1016/j.matlet.2025.138985","url":null,"abstract":"<div><div>In this paper, it is proposed that a TiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> composite powder-layer aluminum foil (denoted as CPLAF) with high specific volume was prepared by aluminum powder additive method combined with sol–gel deposition valve metal. The results show that the unit specific capacitance of CPLAF is 1.196 μF∙cm<sup>−2</sup> at a formation voltage of 520 V, which is significantly higher than that of powder-layered aluminum foils (denoted PLAF) without deposited TiO<sub>2</sub>, and has better electrical performance advantages than those reported in the existing literature. This study provides a new way to improve the unit specific capacitance of anode foil of aluminum electrolytic capacitors.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 138985"},"PeriodicalIF":2.7,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518643","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 superconductivity in carbon-doped aluminum thin films 碳掺杂铝薄膜的超导性增强
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-24 DOI: 10.1016/j.matlet.2025.138982
Chanyoung Lee , Yeonkyu Lee , Jinyoung Yun , J.C. Zapata , S. Suárez , M. Sirena , Jeehoon Kim , N. Haberkorn
{"title":"Enhanced superconductivity in carbon-doped aluminum thin films","authors":"Chanyoung Lee ,&nbsp;Yeonkyu Lee ,&nbsp;Jinyoung Yun ,&nbsp;J.C. Zapata ,&nbsp;S. Suárez ,&nbsp;M. Sirena ,&nbsp;Jeehoon Kim ,&nbsp;N. Haberkorn","doi":"10.1016/j.matlet.2025.138982","DOIUrl":"10.1016/j.matlet.2025.138982","url":null,"abstract":"<div><div>We report on the superconducting properties of 40 nm thick C-doped aluminum (Al-C) thin films grown by co-sputtering on silicon substrates at room temperature. The films were fabricated by fixing the Al target power at 80 W and varying the C target power between 4 and 50 W. Carbon incorporation modifies the transport properties, decreasing the residual-resistivity ratio from ∼ 1.5 to ∼ 1.1 and moderately increasing the normal-state resistivity. For C powers above 12 W, <em>T<sub>c</sub></em> increases systematically, reaching 2.35 K without saturation. Measurements of the upper critical field reveal moderate values, with zero-temperature extrapolations of 0.09 T and 0.15 T for samples grown at 40 W and 50 W, respectively. Unlike the typical behavior observed with oxygen or nitrogen doping, the Al-C films exhibit a significant <em>T<sub>c</sub></em> enhancement without a substantial increase in normal-state resistivity.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138982"},"PeriodicalIF":2.7,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144470661","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
Microstructure and mechanical properties of V-N micro-alloyed invar alloy part fabricated by wire arc additive manufacturing 电弧增材制造V-N微合金invar合金零件的组织与力学性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-24 DOI: 10.1016/j.matlet.2025.138986
Cuixin Chen , Chenyu Zhao , Zhonghua Sun , Jun He , Weibing Guo , Haitao Xue , Hongxin Zhang
{"title":"Microstructure and mechanical properties of V-N micro-alloyed invar alloy part fabricated by wire arc additive manufacturing","authors":"Cuixin Chen ,&nbsp;Chenyu Zhao ,&nbsp;Zhonghua Sun ,&nbsp;Jun He ,&nbsp;Weibing Guo ,&nbsp;Haitao Xue ,&nbsp;Hongxin Zhang","doi":"10.1016/j.matlet.2025.138986","DOIUrl":"10.1016/j.matlet.2025.138986","url":null,"abstract":"<div><div>Wire arc additive manufacturing (WAAM) provides a viable solution for fabricating complex and medium-large size invar alloy parts. However, grain coarsening and strength descent are present in invar alloy fabricated by wire arc additive manufacturing. To solve these problems, a V-N micro-alloyed invar alloy was designed and used for wire arc additive manufacturing by drawing on the idea of microalloying in this paper. The results show that the addition of V-N elements promotes the precipitation of V (C, N) composite phase, which are distributed at grain boundaries and inside the grains, effectively refining the microstructure and improving the comprehensive mechanical properties of the WAAM-fabricated invar alloy. The average tensile strength and low-temperature impact toughness of the WAAM-fabricated V-N micro-alloyed invar alloy are 765 MPa and 130 J/cm<sup>2</sup>, which are about 90 % and 23 % higher than the ordinary invar alloy.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 138986"},"PeriodicalIF":2.7,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513615","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 corrosion resistance of 2024-T351 aluminum alloy through high-speed laser texturing using a polygon scanner 利用高速激光形变多边形扫描器增强2024-T351铝合金的耐腐蚀性能
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-23 DOI: 10.1016/j.matlet.2025.138979
Robert Baumann , Lis G. Zschach , Franziska Spitz , Fabian Ränke , Andrés Lasagni
{"title":"Enhanced corrosion resistance of 2024-T351 aluminum alloy through high-speed laser texturing using a polygon scanner","authors":"Robert Baumann ,&nbsp;Lis G. Zschach ,&nbsp;Franziska Spitz ,&nbsp;Fabian Ränke ,&nbsp;Andrés Lasagni","doi":"10.1016/j.matlet.2025.138979","DOIUrl":"10.1016/j.matlet.2025.138979","url":null,"abstract":"<div><div>Corrosion accounts for approximately 3 % of the global GDP annually, primarily due to degradation in metallic materials such as aluminum and steel. This study explores high-speed direct laser writing (DLW) using a polygon scanner combined with an ultrafast picosecond laser source to enhance corrosion resistance of aluminum surfaces. Laser structuring was performed on aluminum 2024-T351, a low-corrosion-resistant alloy, applying laser fluences up to 8.7 J/cm<sup>2</sup>. Surface analyses revealed periodic as well as random nanostructures with structure depths up to 40 µm ± 5.3 µm. Wettability analysis showed only a moderate increase in water contact angles (WCAs) to 110° ± 6°, which is insufficient for superhydrophobic behavior. However, the corrosion performance, assessed through potentiodynamic curves, demonstrated a reduction in corrosion rates from 19.1 to 1.45 µm/year, achieving an inhibition efficiency of 93 %.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138979"},"PeriodicalIF":2.7,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366082","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 and nonlinear optical properties of triethylbenzene derivatives with different substituents 不同取代基三乙基苯衍生物的合成及其非线性光学性质
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-22 DOI: 10.1016/j.matlet.2025.138976
Lijun Gao, Hongcheng Yang, Liming Zhou, Shaoming Fang
{"title":"Synthesis and nonlinear optical properties of triethylbenzene derivatives with different substituents","authors":"Lijun Gao,&nbsp;Hongcheng Yang,&nbsp;Liming Zhou,&nbsp;Shaoming Fang","doi":"10.1016/j.matlet.2025.138976","DOIUrl":"10.1016/j.matlet.2025.138976","url":null,"abstract":"<div><div>Three novel triethylbenzene derivatives (B1, B2 and B3) with different substituents have been synthesized by Schiff-base and aldol condensation reaction. B1, B2 and B3 exhibit reverse saturable absorption. B1 has the lowest initial optical limiting threshold among the three derivatives because of its low energy gap. However, B3, which has a larger π-conjugate structure and electron-withdrawing carbonyl groups, exhibits strong reverse saturable absorption at higher laser energy. The synthesized triethylbenzene derivatives may be potential candidates for applications in the field of laser protection.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 138976"},"PeriodicalIF":2.7,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518639","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
Two-dimensional Ni/C nanosheets derived from metal-organic frameworks for enhanced oxygen evolution reaction 基于金属有机骨架的二维Ni/C纳米片增强析氧反应
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-21 DOI: 10.1016/j.matlet.2025.138969
Chengwei Kuang , Fenglin Wang , Dan Wu , Hao Wan , Xiaohe Liu
{"title":"Two-dimensional Ni/C nanosheets derived from metal-organic frameworks for enhanced oxygen evolution reaction","authors":"Chengwei Kuang ,&nbsp;Fenglin Wang ,&nbsp;Dan Wu ,&nbsp;Hao Wan ,&nbsp;Xiaohe Liu","doi":"10.1016/j.matlet.2025.138969","DOIUrl":"10.1016/j.matlet.2025.138969","url":null,"abstract":"<div><div>Two-dimensional (2D) metal–organic frameworks (MOFs) nanosheets and their derivatives have drawn great interest due to their ultrathin thickness, large surface areas and accessible active sites. Herein, 2D Ni<sub>2</sub>(NDC)<sub>2</sub>(DABCO) (NDC = 2,6-naphthalenedicarboxylic acid, DABCO = 1,4-diazabicyclo[2.2.2]octane) nanosheets are fabricated by modulator-assisted synthesis. After further pyrolysis treatment, the Ni/C nanosheets exhibit remarkable catalytic activities in the oxygen evolution reaction (OER) with a low overpotential of 293 mV at a current density of 10 mA cm<sup>−2</sup> and a small Tafel slope of 58 mV dec<sup>–1</sup>. This work provides a convenient and effective method for the synthesis of 2D Ni<sub>2</sub>(NDC)<sub>2</sub>(DABCO) nanosheets.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138969"},"PeriodicalIF":2.7,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335679","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
Synergistic magnetic field induction and cobalt ion doping: Efficient synthesis of 1T phase molybdenum disulfide for high-performance HER/OER electrocatalysis 协同磁场感应和钴离子掺杂：高效合成用于HER/OER电催化的1T相二硫化钼
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-06-20 DOI: 10.1016/j.matlet.2025.138954
Xuefeng Tang , Peng Dai , Zelin Yang , Haoran Zhen , Wen Zhang , Ziyun Zhang
{"title":"Synergistic magnetic field induction and cobalt ion doping: Efficient synthesis of 1T phase molybdenum disulfide for high-performance HER/OER electrocatalysis","authors":"Xuefeng Tang ,&nbsp;Peng Dai ,&nbsp;Zelin Yang ,&nbsp;Haoran Zhen ,&nbsp;Wen Zhang ,&nbsp;Ziyun Zhang","doi":"10.1016/j.matlet.2025.138954","DOIUrl":"10.1016/j.matlet.2025.138954","url":null,"abstract":"<div><div>Herein, we report a magnetic field-guided hydrothermal method for the controlled synthesis of 1T-phase molybdenum disulfide (MoS<sub>2</sub>) under 0.4 T magnetic induction. This novel synthesis strategy significantly enhances both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) catalytic activities when compared to conventional preparation methods conducted without magnetic field intervention. The fabricated 1T-phase MoS<sub>2</sub> exhibited low overpotentials of 99 mV for HER and 320 mV for OER at 10 mA cm<sup>−2</sup>, along with small Tafel slope values of 84 and 71 mV dec<sup>−1</sup>, respectively, indicating faster reaction kinetics. This study establishes a magnetic-field assisted synthetic paradigm for designing high-performance bifunctional HER/OER catalysts.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"398 ","pages":"Article 138954"},"PeriodicalIF":2.7,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335678","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
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