Materials LettersPub Date : 2024-11-10DOI: 10.1016/j.matlet.2024.137703
Haifeng Zhai , Wei Jiang , Haonan Wu , Donghu Li , Yang Wang
{"title":"The effect of scanning strategies on the defect distribution and mechanical properties of additive manufactured 316L stainless steel components","authors":"Haifeng Zhai , Wei Jiang , Haonan Wu , Donghu Li , Yang Wang","doi":"10.1016/j.matlet.2024.137703","DOIUrl":"10.1016/j.matlet.2024.137703","url":null,"abstract":"<div><div>The effect of scanning strategies on defect distribution and mechanical properties of additive-manufactured (AM) 316L stainless steel components was investigated. Three scanning strategies (A1-stripe, A2-loop, A3-chessboard) were applied to study the defect characteristics using X-ray microscopy (XRM) and evaluate the resulting mechanical behavior through tensile tests. The results indicate that the chessboard strategy produces fewer, smaller, and more uniform defects, contributing to superior tensile strength and reduced anisotropy. In contrast, the loop strategy results in a higher density of elongated defects near the surface, leading to increased stress concentrations and lower tensile performance. This study provides insights into optimizing scanning strategies to enhance defect control, thereby improving the overall mechanical properties of 316L stainless steel in additive manufacturing. These findings are instrumental in advancing the process design for defect mitigation and structural integrity in AM components.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137703"},"PeriodicalIF":2.7,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656541","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}
Materials LettersPub Date : 2024-11-09DOI: 10.1016/j.matlet.2024.137699
M. Slimi , N. Khitouni , A.S. Alnafisah , M. Khitouni , J.J. Suñol
{"title":"Effect of phosphorus additions and milling time on the mechanosynthesis of Ni50Cu40-x(Fe2B)10Px alloys","authors":"M. Slimi , N. Khitouni , A.S. Alnafisah , M. Khitouni , J.J. Suñol","doi":"10.1016/j.matlet.2024.137699","DOIUrl":"10.1016/j.matlet.2024.137699","url":null,"abstract":"<div><div>The effects of phosphorus addition and milling time on the development of phases, microstructural and thermal behaviors in Ni<sub>50</sub>Cu<sub>40-x</sub>(Fe<sub>2</sub>B)<sub>10</sub>P<sub>x</sub> (x = 10, 20, and 30at.%) prepared via mechanical alloying, were examined by scanning electron microscopy, X-ray diffraction, and differential scanning calorimetry techniques. As the phosphorous content and milling time rise, the crystallite size gets finer and<!--> <!-->the microstrains become more significant. Furthermore, P addition promotes the amorphous phase and subsequent supersaturated solid solution Ni(Cu,Fe,P) by the simultaneous occurrence of amorphization and recrystallization phenomena. Thermal study shows the complexity of the behavior as a function of the phosphorus content associated with the restoration of defects and the recrystallization of intermediate phases.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137699"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656545","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}
Materials LettersPub Date : 2024-11-09DOI: 10.1016/j.matlet.2024.137700
Fulin Xu , Kairui Fu , Jiamei Wang , Wenjian Yu , Yanjie Li , Ziyan Liu , Jingui Wang
{"title":"A core–shell hierarchically porous ZSM-5 zeolite with an Al-rich shell synthesized by using hydrolysable templates","authors":"Fulin Xu , Kairui Fu , Jiamei Wang , Wenjian Yu , Yanjie Li , Ziyan Liu , Jingui Wang","doi":"10.1016/j.matlet.2024.137700","DOIUrl":"10.1016/j.matlet.2024.137700","url":null,"abstract":"<div><div>Hierarchically porous zeolites with both macroporous/mesoporous and microporous channels have received significant attention due to their better catalytic performance than that of conventional zeolites. Here, for the first time, a template with hydrolysable groups that can achieve in-situ regulation of the pH value has been designed. Employing this novel template, core–shell hierarchically porous ZSM-5 zeolites with Al-rich shells were one-step synthesized, which exhibit better catalytic activity and selectivity than conventional microporous zeolites in bulky-molecule catalysis.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137700"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656599","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}
Materials LettersPub Date : 2024-11-09DOI: 10.1016/j.matlet.2024.137686
Yanping Zheng, Xingfang Luo, Ce Hu, Zhenzhen Jiang, Cailei Yuan, Hang Zhou
{"title":"Modulation on interfacial states for the improved charge storage performance in HfO2 matrix embedded CoO nanoparticles-based memory capacitors","authors":"Yanping Zheng, Xingfang Luo, Ce Hu, Zhenzhen Jiang, Cailei Yuan, Hang Zhou","doi":"10.1016/j.matlet.2024.137686","DOIUrl":"10.1016/j.matlet.2024.137686","url":null,"abstract":"<div><div>The surface defect and interfacial states in nanoparticles have strong carrier trapping capacity and are closely related to the charge storage capacity and life of nanoparticles memory devices. In this work, solid and hollow CoO nanoparticles confined in amorphous HfO<sub>2</sub> high dielectric thin film with similar size and density were synthesized and characterized, and the effect of interfacial state regulation of nanoparticles on charge storage performance of memory capacitors was studied by comparing the experimental data of the two samples. A larger memory window was observed in the memory capacitor based on hollow CoO nanoparticles comparing to the solid one, which is attributed to an abundant of defects originated from the surface and grain boundaries of CoO nanoparticles with hollow structure. Artificially controlling surface defects and interface states of nanoparticles from the nano-floating gate memory is of great significance in the development of memory devices.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137686"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656538","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}
Materials LettersPub Date : 2024-11-09DOI: 10.1016/j.matlet.2024.137698
Tathagata Kar, Israel Martínez Díaz, Maura Casales-Díaz, José Juan Ramos-Hernández, María Fernanda Flores-Rodríguez, Thangamani Jayaram Gounder, Ramiro Pérez, Mohan Kumar Kesarla
{"title":"Carbonized zeolitic imidazolate framework-incorporated electrospun polymeric nanofiber composite for supercapacitor applications","authors":"Tathagata Kar, Israel Martínez Díaz, Maura Casales-Díaz, José Juan Ramos-Hernández, María Fernanda Flores-Rodríguez, Thangamani Jayaram Gounder, Ramiro Pérez, Mohan Kumar Kesarla","doi":"10.1016/j.matlet.2024.137698","DOIUrl":"10.1016/j.matlet.2024.137698","url":null,"abstract":"<div><div>Carbon nanofibers are rapidly emerging as efficient electrode materials for energy storage. Given this, we established a simple <em>in-situ</em> technique to grow zeolitic imidazolate framework (ZIF8) particles on electrospun polyacrylonitrile (PAN)–polyvinylpyrrolidone (PVP) nanofibers. Our systematic experiments indicate that the PAN/PVP/ZIF8 (PPZ8) nanofibers carbonized at 800–900 °C (C|PPZ8-800/900) are electrochemically capacitive. The C|PPZ8-800/900 samples exhibit the maximum specific capacitance values (∼180.69 F·g<sup>−1</sup>) and excellent electrochemical stability (∼100 %) in 1.0 M H<sub>2</sub>SO<sub>4</sub>. Incorporation of ZIF8 particles induces a mesoporous behaviour in the PPZ8 composite during carbonization and allows the nanofibers to retain their structural stability. The degree of graphitization and traces of metallic-Zn (contributing towards lower charge-transfer resistance) in the tested C|PPZ8 nanofiber composites significantly affects their electrochemical capacitive performance.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137698"},"PeriodicalIF":2.7,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials LettersPub Date : 2024-11-07DOI: 10.1016/j.matlet.2024.137669
Bingtian Li , Ziyao Chen , ZhenJie Guan , Runchen Yang , Weijian Li , Liang Zhen , Wenzhu Shao
{"title":"Unraveling the new role of La on arc erosion behavior of C/Cu-based electrical contacts","authors":"Bingtian Li , Ziyao Chen , ZhenJie Guan , Runchen Yang , Weijian Li , Liang Zhen , Wenzhu Shao","doi":"10.1016/j.matlet.2024.137669","DOIUrl":"10.1016/j.matlet.2024.137669","url":null,"abstract":"<div><div>Copper/carbon (C/Cu) electrical contact materials are widely used in low-voltage appliances due to their exceptional conductivity and anti-ablation properties. However, the oxidation of Cu during operation and the suboptimal wettability at the C/Cu interface negatively impact its arc-resistant performance. This study explores the potential for enhancing the arc-resistant characteristics of C/Cu electrical contact materials through the alloying of La in Cu. The findings indicate that La alloying in Cu significantly decreases the contact resistance (from 50 mΩ to 2.2 mΩ) and mass loss (by 50%) of C/Cu electrical contact materials.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137669"},"PeriodicalIF":2.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656626","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}
Materials LettersPub Date : 2024-11-07DOI: 10.1016/j.matlet.2024.137689
Zhenzhe Li , Bowan Tao , Ruipeng Zhao , Kai Yang , Xi Chen , Tian Xie , Mingyuan Zhao , Yudong Xia
{"title":"The preparation of inclined c-axis YBa2Cu3O7-δ sensitive film with the transverse thermoelectric effect based on the flexible metal-based substrate","authors":"Zhenzhe Li , Bowan Tao , Ruipeng Zhao , Kai Yang , Xi Chen , Tian Xie , Mingyuan Zhao , Yudong Xia","doi":"10.1016/j.matlet.2024.137689","DOIUrl":"10.1016/j.matlet.2024.137689","url":null,"abstract":"<div><div>The YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub>-based atomic layer thermopile (ALTP) heat flux sensor, characterized by its high response frequency, has been utilized in scale-model testing within hypersonic ground-based facilities to detect the unsteady fluctuating heat flux caused by the laminar-to-turbulent boundary-layer transition. However, the insert-assembled method and typical single crystal substrate lead to complex operational procedures and measurement inaccuracies. Consequently, preparing high-orientation, <em>c</em>-axis inclined YBCO films on flexible substrate may provide a viable solution for accommodating the irregular surface of models. In this work, the <em>c</em>-axis inclined YBCO films were successfully epitaxially grown on the unoriented metal-based flexible substrate by incorporating the MgO template layer. The epitaxial quality is closely associated with the deposition temperature, where the good crystal quality and biaxial texture (<em>Δχ</em> = 4.31°, <em>Δφ</em> = 10.86°) are obtained under the proper temperature. Additionally, the remarkable transverse thermoelectric effect performance further indicates the successful epitaxial growth of the YBCO sensitive film.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137689"},"PeriodicalIF":2.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656534","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}
Materials LettersPub Date : 2024-11-07DOI: 10.1016/j.matlet.2024.137692
Peng Zhong , Jiacheng Wang , Jie Zhu , Haoran Lin , Lin Li , Xiaoming Lin , Yuchen Zheng , Hao Yang , Lei Hu
{"title":"Ternary ZnO/Co3O4/CuO heterostructure nanocomposites derived from trimetallic metal-organic frameworks for efficient electrocatalytic water oxidation","authors":"Peng Zhong , Jiacheng Wang , Jie Zhu , Haoran Lin , Lin Li , Xiaoming Lin , Yuchen Zheng , Hao Yang , Lei Hu","doi":"10.1016/j.matlet.2024.137692","DOIUrl":"10.1016/j.matlet.2024.137692","url":null,"abstract":"<div><div>Enhancing the electrocatalytic performance of transition-metal oxide catalysts by optimizing the active center at the multi-component heterointerface is a daunting task. Herein, the three-component ZnO/Co<sub>3</sub>O<sub>4</sub>/CuO heterostructure composite catalyst was effectively produced through a room-temperature precipitation reaction, followed by calcination in air. The ZnO/Co<sub>3</sub>O<sub>4</sub>/CuO ternary heterostructure catalyst showed superior oxygen evolution reaction (OER) performance, characterized<!--> <!-->by a low overpotential (312 mV at 10 mA cm<sup>−2</sup>) and Tafel slope (83.5 mV dec<sup>-1</sup>) compared to the ZnO, Co<sub>3</sub>O<sub>4</sub>, ZnO/CuO, ZnO/Co<sub>3</sub>O<sub>4</sub>, and Co<sub>3</sub>O<sub>4</sub>/CuO catalysts. The research shows that the property of electrocatalytic oxygen evolution is greatly enhanced due to the combined impact of each component.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137692"},"PeriodicalIF":2.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656531","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}
Materials LettersPub Date : 2024-11-07DOI: 10.1016/j.matlet.2024.137687
Ying-Ying Qiao , Yang-Yang Si , Jie Liu , Zhi-Qiang Wu , Cang Liu , Qing Li , Long Yuan
{"title":"Assembly of S-Scheme heterojunction In2S3/Zr-bcu-22bipy44dc: Optimize the optical-electronic properties for highly efficient photochemical decontamination of Cr(VI) ions and dyes","authors":"Ying-Ying Qiao , Yang-Yang Si , Jie Liu , Zhi-Qiang Wu , Cang Liu , Qing Li , Long Yuan","doi":"10.1016/j.matlet.2024.137687","DOIUrl":"10.1016/j.matlet.2024.137687","url":null,"abstract":"<div><div>Zr-<strong><em>bcu</em></strong>-22bipy44dc, which features a LUMO positioned closer to the VB of In<sub>2</sub>S<sub>3</sub>, was utilized to assemble a S-Scheme heterojunction IS-Zr-MOF. Due to the appropriate band structure dislocation, the optical-electronic properties have been notably optimized. The photocatalytic reduction efficiency of IS-Zr-MOF-2 for Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup> has achieved 98.6 % just within 30 min, under 500 W xenon lamp. It also displays effective degradation ability towards reactive dyes RB13, RB21 and RR15, under 500 W mercury lamp. This study presents a practical approach to create novel bi-functional photocatalysts for remediation of water environment.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137687"},"PeriodicalIF":2.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656601","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}
Materials LettersPub Date : 2024-11-07DOI: 10.1016/j.matlet.2024.137641
Oraib Al-Ketan
{"title":"Additive manufacturing-assisted casting of 3D micro-architected heat sinks","authors":"Oraib Al-Ketan","doi":"10.1016/j.matlet.2024.137641","DOIUrl":"10.1016/j.matlet.2024.137641","url":null,"abstract":"<div><div>The rapid advancement in electronic devices has heightened thermal management challenges. This study presents the fabrication of 3D micro-architected heatsinks using additive manufacturing (AM) assisted casting. This approach merges AM’s design flexibility with casting’s cost-effectiveness and versatility, enabling complex heatsink geometries. The fabricated heatsinks were analyzed using scanning electron microscopy and computed tomography. The thermal behavior of the heatsinks was assessed in forced convection conditions. A temperature drop at the base ranging from 5% to 13% was measured.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"379 ","pages":"Article 137641"},"PeriodicalIF":2.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656524","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}