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Optical, magnetic, and photoluminescence properties of Cr/Mn-doped ZnO nanoparticles synthesised by solution combustion method 溶液燃烧法制备Cr/ mn掺杂ZnO纳米颗粒的光学、磁性和光致发光性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-10 DOI: 10.1080/02670836.2023.2239630
S. Devasena, G. Murali, D. Amaranatha Reddy, Y. C. Ratnakaram, A. Sharon Smiley, K. Sunil kumar, R. Vijayalakshmi
{"title":"Optical, magnetic, and photoluminescence properties of Cr/Mn-doped ZnO nanoparticles synthesised by solution combustion method","authors":"S. Devasena, G. Murali, D. Amaranatha Reddy, Y. C. Ratnakaram, A. Sharon Smiley, K. Sunil kumar, R. Vijayalakshmi","doi":"10.1080/02670836.2023.2239630","DOIUrl":"https://doi.org/10.1080/02670836.2023.2239630","url":null,"abstract":"In this study, we investigated the structural, optical, photoluminescence, and magnetic characteristics of pristine and Cr/Mn-doped ZnO nanoparticles prepared via the solution combustion method. The prepared nanoparticles exhibited a monophasic hexagonal structure. The successful incorporation of Cr/Mn elements into the ZnO lattice is reflected in the X-ray photoelectron spectroscopy, UV-vis. absorbance spectroscopy and Fourier-transform infrared spectroscopy measurements. Further, the photoluminescence intensity of ZnO nanoparticles changed upon Cr/Mn-doping due to the changed defect structure of nanoparticles. Furthermore, both pristine and Cr/Mn-doped ZnO nanoparticles revealed the ferromagnetic behaviour, wherein the doping of Cr/Mn enhanced the ferromagnetic characteristics. Overall, our results divulged that doping ZnO nanoparticles with appropriate combination of transition elements would leads to unearth fascinating optical and magnetic properties.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"118 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78165943","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
Modelling the laser surface hardening in a ferrite and pearlite initial microstructure 模拟铁素体和珠光体初始组织的激光表面硬化
4区 材料科学
Materials Science and Technology Pub Date : 2023-08-07 DOI: 10.1080/02670836.2023.2240101
Felipe M. Castro Cerda, Constantinos Goulas, Dakota Jones, Ata Kamyabi, Douglas Hamre, Patricio Méndez, Gentry Wood
{"title":"Modelling the laser surface hardening in a ferrite and pearlite initial microstructure","authors":"Felipe M. Castro Cerda, Constantinos Goulas, Dakota Jones, Ata Kamyabi, Douglas Hamre, Patricio Méndez, Gentry Wood","doi":"10.1080/02670836.2023.2240101","DOIUrl":"https://doi.org/10.1080/02670836.2023.2240101","url":null,"abstract":"ABSTRACTThe present study explores the microstructure and the depth-dependence of hardness after a single pass laser heat-treatment. The initial microstructure was selected as ferrite and pearlite in different fractions, with the aim of studying low, medium, and high carbon steels. A modification of an existing model is proposed, whereby the cementite dissolution is incorporated to better reflect the microstructure evolution during the rapid thermal cycle. It is found that the predictions under the new paradigm show fair agreement with the experimental data. The new model indicates that the correct estimation of the composition of austenite near the transition zone produces a more accurate prediction of the hardness profile, reducing the overestimation obtained in previous works.KEYWORDS: Laser heat treatmentFast heatingAusteniteMartensiteModelling Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135903297","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: 1
Microstructure and properties of AlCrxFeNi1.2Cu0.8 high-entropy alloys at high temperature AlCrxFeNi1.2Cu0.8高熵合金高温组织与性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-02 DOI: 10.1080/02670836.2023.2240590
Chunyan Li, Zihui Tang, Y. Lu, Lin Tian, Jianshu Zhai, Xiaocheng Li, S. Kou
{"title":"Microstructure and properties of AlCrxFeNi1.2Cu0.8 high-entropy alloys at high temperature","authors":"Chunyan Li, Zihui Tang, Y. Lu, Lin Tian, Jianshu Zhai, Xiaocheng Li, S. Kou","doi":"10.1080/02670836.2023.2240590","DOIUrl":"https://doi.org/10.1080/02670836.2023.2240590","url":null,"abstract":"With the development of space technology, high-temperature resistant materials have become one of the hot spots in space research. The research of new high-temperature materials has become the key to breakthrough in aviation field. Research on microstructure and properties of AlCrxFeNi1.2Cu0.8 high-entropy alloys at high temperature (900, 1000 and 1100°C) were studied in this paper. After high-temperature annealing, the structural stability of alloys is maintained and the microstructure of alloys is dendrite. The grains are refined with the increase of Cr content. The alloy exhibits excellent comprehensive mechanical properties after heat treatment. The compressive strength of the alloy is above 1000 MPa and the plasticity of the alloy is above 10%. The alloy changes from brittle to tough with the increase in temperature. The hardness of Cr1.25 specimen is doubled after annealing, and the corrosion resistance of Cr 0.5 specimen is the best.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"250 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74916371","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 Fe addition on phase evolution, microstructure and properties of Ti50Ni50-XFeX alloy 添加铁对Ti50Ni50-XFeX合金相演化、组织和性能的影响
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-02 DOI: 10.1080/02670836.2023.2240102
J. Parida, S. Mishra, A. Behera
{"title":"Effect of Fe addition on phase evolution, microstructure and properties of Ti50Ni50-XFeX alloy","authors":"J. Parida, S. Mishra, A. Behera","doi":"10.1080/02670836.2023.2240102","DOIUrl":"https://doi.org/10.1080/02670836.2023.2240102","url":null,"abstract":"The work aims to study the effect of the Fe content on the properties of Ti50 Ni(50−X) Fe X alloy (where X = 0, 2, 4, 6, 8, and 10 at.-%) sintered at 1050°C and 1150°C using the conventional sintering technique. The microstructure, chemical composition and phase evolution of the sample were analysed by SEM, EDS, and XRD, respectively, along with various properties. It was observed that the sintered sample microstructure consists of (Ni, Fe)-rich, and Ti-rich phases. Here, the porosity decreases, whereas density, hardness, and wear resistance increase with the increasing temperature. The 8at.-%Fe sample shows lower porosity and higher wear resistance, relative density and hardness value than other Fe content samples. The 2at.-%Fe sample sintered at 1050°C shows a higher shape recovery value compared to other compositions sintered at various temperatures.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"27 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84831637","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: 1
Critical Assessment 43: Microstructural and mechanical properties of friction stir additively fabricated SiC-Reinforced AA6061 build 关键评价43:搅拌摩擦添加剂制备sic增强AA6061材料的显微组织和力学性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-01 DOI: 10.1080/02670836.2023.2239634
S. Choudhury, Rahul Das, Durjyodhan Sethi, J. Roy, B. S. Roy
{"title":"Critical Assessment 43: Microstructural and mechanical properties of friction stir additively fabricated SiC-Reinforced AA6061 build","authors":"S. Choudhury, Rahul Das, Durjyodhan Sethi, J. Roy, B. S. Roy","doi":"10.1080/02670836.2023.2239634","DOIUrl":"https://doi.org/10.1080/02670836.2023.2239634","url":null,"abstract":"Friction stir additive manufacturing was employed to fabricate a SiC-reinforced AA6061 composite. The tool with a pin length of 4.5 mm (plunge depth of 50% into the lower layer thickness) was used for the experiment. The stir zone consisted of fine, equiaxed grains due to dynamic recrystallisation. Variations in grain size, as well as changes in precipitate distribution, size, and morphology, were detected along the build direction. Hardness and tensile strength varied across layers, with the top slice having the greatest values of 104.2 HV and 268.4 MPa, respectively. Notably, the FSAM build demonstrated improved ductility with a maximum of 58.98%, mostly ascribed to fragmentation and partial loss of grain-boundary phases, as well as strong interfaces that delayed necking.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"23 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85431650","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
Die-sinking and rotary EDM surface and subsurface analysis of MoSi2-SiC ceramic composites MoSi2-SiC陶瓷复合材料的模切和旋转电火花加工表面和亚表面分析
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-08-01 DOI: 10.1080/02670836.2023.2240103
L. Selvarajan, R. Rajavel, M. Yunus, Rami Alfattani
{"title":"Die-sinking and rotary EDM surface and subsurface analysis of MoSi2-SiC ceramic composites","authors":"L. Selvarajan, R. Rajavel, M. Yunus, Rami Alfattani","doi":"10.1080/02670836.2023.2240103","DOIUrl":"https://doi.org/10.1080/02670836.2023.2240103","url":null,"abstract":"Rotating EDM and die sinking EDM were used to compare the machinability of MoSi2-SiC composites. Surface flaws such as micro cracks, un melted spherical particles, pores, a recast layer and craters following EDM can be attributed to the high hardness and poor toughness of the MoSi2-SiC. Die sinking EDM and rotary EDM, as shown by a comparison of recast layer thicknesses, produce the most uniformly thin white layers, at 92 and 30 µm respectively. The study found that the area fraction yield for porosity ranged from 8.18% to 12.922% when using rotary EDM, but only from 2.33% to 8.10% when using die-sinking EDM. According to the EDAX, the spongy exterior of a composite is the result of a lot of gas being produced. Although the rotational movement of the tool sweeps the resolidified particles away, Rotary EDM resulted in a thinner and less uniform recast layer while still producing good surfaces.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"68 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77148220","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: 3
Investigations of performance characteristics on direct metal laser sintered MONEL K-500 superalloy 直接金属激光烧结MONEL K-500高温合金的性能研究
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-07-30 DOI: 10.1080/02670836.2023.2240100
M. Mani, M. Mohanraj, A. Karthikeyan, K. Kalaiselvan
{"title":"Investigations of performance characteristics on direct metal laser sintered MONEL K-500 superalloy","authors":"M. Mani, M. Mohanraj, A. Karthikeyan, K. Kalaiselvan","doi":"10.1080/02670836.2023.2240100","DOIUrl":"https://doi.org/10.1080/02670836.2023.2240100","url":null,"abstract":"MONEL K-500 superalloy is difficult to manufacture precisely in traditional manufacturing processes like casting, forming and machining. The direct metal laser sintering (DMLS) process is one of the best metal additive manufacturing processes used in this work. In this work, Laser Power (LP), Scan Speed (SS), Hatch Distance (HD) and Layer Thickness (LT) are used as DMLS process parameters. L09 Orthogonal array is used for printing the MONEL K-500 metal parts. The performance characteristics like ultimate tensile strength (UTS) and surface toughness (Ra ) are improved by 2% and 17% for the Taguchi optimum parameter levels. Contour plots explained the interaction effects of DMLS process parameters on performance characteristics. The better microstructural characteristics obtained the higher optimum parameter level.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"11 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80149984","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 element segregation on deformation mechanisms of nano/ultrafine-grained 304 stainless steel 元素偏析对纳米/超细晶304不锈钢变形机制的影响
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-07-25 DOI: 10.1080/02670836.2023.2238413
Miaomiao Zhao, Yang Liu, Hongyan Wu, Linxiu Du
{"title":"Effect of element segregation on deformation mechanisms of nano/ultrafine-grained 304 stainless steel","authors":"Miaomiao Zhao, Yang Liu, Hongyan Wu, Linxiu Du","doi":"10.1080/02670836.2023.2238413","DOIUrl":"https://doi.org/10.1080/02670836.2023.2238413","url":null,"abstract":"The effect of Cr and Ni element segregation on austenite stability and deformation mechanisms of nano/ultrafine-grained 304 stainless steel obtained by cryogenic rolling plus annealing treatment was systematically studied. The results showed that the nano/ultrafine-grained steel had a good combination of strength and ductility (yield strength ∼896 MPa, tensile strength ∼977 MPa, and elongation ∼39.6%). According to the findings, the formation of Cr segregation in the body-centered cubic structure at the intersection of austenite grain boundaries and localised austenite grains with low Ni content reduced the austenite stability of the nano/ultrafine-grained steel and promoted the generation of strain-induced martensite during plastic deformation, resulting in the deformation mechanism dominated by the transformation-induced plasticity effect.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"14 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73976087","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
Phase formation and electrical properties of SBNLT ceramics prepared via combustion technique 燃烧法制备SBNLT陶瓷的相形成及电学性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-07-25 DOI: 10.1080/02670836.2023.2238415
Thanapon Sinkruason, Anupong Luangpangai, N. Charoenthai, A. Rittidech, P. Pulphol, N. Vittayakorn, T. Bongkarn
{"title":"Phase formation and electrical properties of SBNLT ceramics prepared via combustion technique","authors":"Thanapon Sinkruason, Anupong Luangpangai, N. Charoenthai, A. Rittidech, P. Pulphol, N. Vittayakorn, T. Bongkarn","doi":"10.1080/02670836.2023.2238415","DOIUrl":"https://doi.org/10.1080/02670836.2023.2238415","url":null,"abstract":"This report investigates the effect of firing temperatures on the phase formation, microstructure, electrical, and energy storage properties of lead-free Sr0.3(Bi0.7Na0.67Li0.03)0.5TiO3 (SBNLT) ceramics, synthesised by combustion technique. The samples were calcined between 700°C and 900°C for 2 h and sintered between 1100°C and 1200°C for 2 h. The ceramics exhibited coexisting rhombohedral and tetragonal phases, which were confirmed by the Rietveld refinement technique. A morphotropic phase boundary (MPB) of the rhombohedral and tetragonal phases, with a ratio of 49:51, was obtained at the sintering temperature of 1175°C. The highest maximum dielectric constant (ε max = 4667), polarisation (P max = 28.80 µC/cm2) and energy density (W = 0.95 J/cm3), with a breakdown strength of 70 kV/cm, were achieved from the sample sintered at 1175°C.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"15 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79627842","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 visible light-sensitive argentous oxide/calcium aluminate nanocomposite photocatalyst 一种可见光敏感的氧化银/铝酸钙纳米复合光催化剂
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-07-21 DOI: 10.1080/02670836.2023.2237273
Zizhan Sun, Qianmin Cong, Xiaoyu Wang, Jiayi Cui, Z. Cai, C. Fan, L. Pei
{"title":"A visible light-sensitive argentous oxide/calcium aluminate nanocomposite photocatalyst","authors":"Zizhan Sun, Qianmin Cong, Xiaoyu Wang, Jiayi Cui, Z. Cai, C. Fan, L. Pei","doi":"10.1080/02670836.2023.2237273","DOIUrl":"https://doi.org/10.1080/02670836.2023.2237273","url":null,"abstract":"A photo-deposition method was developed to synthesise argentous oxide/calcium aluminate nanocomposites (Ag2O-CAONCS) with orthorhombic Ca5Al6O14 and cubic Ag2O phases. Micro-morphology, micro-structure, optical, and visible-light catalytic properties were investigated via different techniques. Ag2O enhances visible-light absorption performance and decreases the band gap of the Ag2O-CAONCS. About 20 mL crystal violet (CV) dye (10 mgL–1) is totally degraded using 20 mg Ag2O-CAONCS under sunlight irradiation for 20 min. The enhanced photocatalytic activity of the Ag2O-CAONCS towards CV under sunlight irradiation is ascribed to the reduction of the band gap, improvement in visible-light absorption and inhibitation role of carriers recombination by Ag2O. The high, stable visible-light catalytic activity makes Ag2O-CAONCS promising photocatalysts for removing organic pollutants.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"15 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79645337","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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