稀有金属材料与工程最新文献_第10页

Effect of Ag Content and β-PbO2 Plating on the Properties of Al/Pb-Ag Alloy 银含量及镀β-PbO2对Al/Pb-Ag合金性能的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30171-1

Zhou Xiangyang , Wang Shuai , Ma Chiyuan , Long Bo , Wang Hui , Yang Juan , Guo Zhongcheng , Chen Buming

{"title":"Effect of Ag Content and β-PbO2 Plating on the Properties of Al/Pb-Ag Alloy","authors":"Zhou Xiangyang , Wang Shuai , Ma Chiyuan , Long Bo , Wang Hui , Yang Juan , Guo Zhongcheng , Chen Buming","doi":"10.1016/S1875-5372(18)30171-1","DOIUrl":"https://doi.org/10.1016/S1875-5372(18)30171-1","url":null,"abstract":"<div>Due to the excellent electrical conductivity and mechanical properties, Al/Pb-Ag alloy has a great potential to be used as an alternative anode for zinc electrowinning. In this work, the effects of Ag content and surface plating with β-PbO2 on the anodic behavior and reaction kinetics were investigated by cyclic voltammetry (CV), anodic polarization curves, electrochemical impedance spectroscopy (EIS) and corrosion rate test. The phase composition and microscopic morphology of the anode oxide layers after electrolysis were observed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The results indicate that high content of silver and electroplating β-PbO2 layer can increase the oxygen evolution activity, electrocatalytic activity and corrosion resistance of the anodes. Al/Pb-0.75%Ag plating β-PbO2 has the lowest oxygen evolution overpotential followed by Al/Pb-0.3%Ag plating β-PbO2, Al/Pb-0.75%Ag and Al/Pb-0.3%Ag. Besides, high content of silver is more beneficial to improving corrosion resistance compared with electroplating β-PbO2 on anode. In addition, the phase composition of four anodes layer are mainly composed of α-PbO2, β-PbO2, Pb and PbO.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 7","pages":"Pages 1999-2004"},"PeriodicalIF":0.7,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30171-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90024585","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: 2

Microstructure and Grain Refinement Performance of a New Al-5Nb-RE-B Master Alloy 新型Al-5Nb-RE-B中间合金的组织与细化性能

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30174-7

Wu Xiaoyan, Zhang Hua-rui, Jiang Feng, Yun Ying, J. Lina, Zhang Hu

引用次数: 6

Pre-deformation and Aging Characteristics of Cu-3Ti-2Mg Alloy Cu-3Ti-2Mg合金的预变形与时效特性

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30168-1

Liu Jia, Wang Xianhui, Ran Qianni, Liu Yanfeng, Li Cong

{"title":"Pre-deformation and Aging Characteristics of Cu-3Ti-2Mg Alloy","authors":"Liu Jia, Wang Xianhui, Ran Qianni, Liu Yanfeng, Li Cong","doi":"10.1016/S1875-5372(18)30168-1","DOIUrl":"10.1016/S1875-5372(18)30168-1","url":null,"abstract":"<div>The effect of cold deformation and aging on the microstructure and properties of Cu-3Ti-2Mg alloy was investigated. The microstructure and phase constituents were characterized by optical microscope (OM), scanning electron microscope (SEM), X-ray diffractometer (XRD), transmission electron microscope (TEM) and electron backscattering diffraction (EBSD), and the hardness and electrical conductivity were measured as well. The results show that the microstructure of as-cast Cu-3Ti-2Mg alloy consists of Cu2Mg phase, plate-like Cu4Ti phase and Cu matrix. The microstructural characterizations reveal that the βprime;-Cu4Ti phase precipitates from the supersaturated Cu matrix during aging. However, excessive aging causes the phase transformation from metastable, coherent βprime;-Cu4Ti to equilibrium, incoherent Cu3Ti phases. In the range of experiments, the optimum process for Cu-3Ti-2Mg alloy is solutizing at 700 °C for 4 h, cold deformation of 60%, and aging at 450 °C for 2 h. The electrical conductivity and hardness HV of Cu-3Ti-2Mg alloy are 16.7 %IACS and 3280 MPa, respectively.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 7","pages":"Pages 1980-1985"},"PeriodicalIF":0.7,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30168-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83002786","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: 4

Synthesis of In(Sn)-O and Sn(In)(Sb)-O System Nanoparticles Using DC Arc Plasma Method 直流电弧等离子体法制备In(Sn)-O和Sn(In)(Sb)-O纳米粒子

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30177-2

Xie Bin, Liu Guanpeng, Li Longteng, Zhao Yanfei, Y. Shuo, Xi Yulin

引用次数: 1

Microstructure and Grain Refinement Performance of a New Al-5Nb-RE-B Master Alloy 新型Al-5Nb-RE-B中间合金的组织与细化性能

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30174-7

Wu Xiaoyan , Zhang Huarui , Jiang Feng , Yun Ying , Jia Lina , Zhang Hu

引用次数: 6

Effect of Strain Rate on Microstructure and Mechanical Properties of TC18 Thick Plate by Electron Beam Welding 应变速率对TC18厚板电子束焊接组织和力学性能的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30172-3

H. Wen, Fu Li, Chen Haiyan

引用次数: 2

Effects of Cold Rolling Reduction and Annealing Temperature on Microstructure and Texture Evolution of Cu-44%Ni Alloy 冷轧压下和退火温度对Cu-44%Ni合金组织和织构演变的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30165-6

Chen Xingpin, Chen Dan, Sun Hongfu, Wang Lixia

{"title":"Effects of Cold Rolling Reduction and Annealing Temperature on Microstructure and Texture Evolution of Cu-44%Ni Alloy","authors":"Chen Xingpin, Chen Dan, Sun Hongfu, Wang Lixia","doi":"10.1016/S1875-5372(18)30165-6","DOIUrl":"10.1016/S1875-5372(18)30165-6","url":null,"abstract":"<div>The effects of cold rolling reduction and annealing temperatures on the formation of cube texture and microstructural evolution have been investigated in Cu-44%Ni alloy. The results show that the recrystallized cube texture is strengthened by either increasing the rolling reduction or increasing the annealing temperature. And the strong cube texture can be observed for the severely cold-rolled (>90%) alloy after annealing at high temperature (>900 °C). Furthermore, high-angle grain boundaries (HAGBs) and annealing twin boundaries (Σ3 boundaries) decrease with the increase of rolling reduction. However, during isochronal annealing, the trend of Σ3 boundaries is consistent with that of HAGBs, which firstly increases during recrystallization process and then decreases with further increasing temperature. After annealing at 1100 °C for 1 h, the 99% cold-rolled Cu-44%Ni alloy obtains the fraction of the cube texture 99.8%, and the fractions of HAGBs and Σ3 boundaries are 2.5% and 1.3%, respectively.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 7","pages":"Pages 1958-1964"},"PeriodicalIF":0.7,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30165-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74020526","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: 4

Effect of Strain Rate on Microstructure and Mechanical Properties of TC18 Thick Plate by Electron Beam Welding 应变速率对TC18厚板电子束焊接组织和力学性能的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30172-3

Han Wen , Fu Li , Chen Haiyan

{"title":"Effect of Strain Rate on Microstructure and Mechanical Properties of TC18 Thick Plate by Electron Beam Welding","authors":"Han Wen , Fu Li , Chen Haiyan","doi":"10.1016/S1875-5372(18)30172-3","DOIUrl":"https://doi.org/10.1016/S1875-5372(18)30172-3","url":null,"abstract":"<div>Influence of the strain rate on microstructures, tensile properties and strain hardening behavior of the electron beam welded joint of TC18 titanium alloy under optimized welding parameters was investigated with three slices (top, middle and bottom). The results show that the welding leads to significant microstructural changes across the joint. The microstructure of fusion zone is composed of coarsened β phase and secondary α-phase. Compared with the base metal, the joint slices along the thickness exhibits a lower strength and plasticity but a further higher hardening capacity. The strength and ductility of the bottom slices are higher than those of the middle and top slices. The maximum yield strength and ultimate tensile strength of the welding slices reach 83% of those of the base metal at the strain rate of 1×10−2 s−1 . The hardening capacity of welding slices decreases with increasing of the strain rate. Tensile fracture occurs in the weld zone. The fracture process of the top slice is cleavage fracture. However, the middle and bottom slices are quasi-cleavage crack.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 7","pages":"Pages 2005-2010"},"PeriodicalIF":0.7,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30172-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91667994","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: 2

Synthesis and Characterization of WC-6Co Nanocrystalline Composite Powder WC-6Co纳米晶复合粉体的合成与表征

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30169-3

Guo Shengda, Shen Tao, Bao Rui, Yang Jiangao, Yi Jianhong

引用次数: 8

FeGaB(25 nm)/Al2O3/FeGaB(25 nm) Multilayer Structures: Effects of Variation of Al2O3Thickness on Static and Dynamic Magnetic Properties FeGaB(25nm)/Al2O3/FeGaB(25nm)多层结构:Al2O3厚度变化对静态和动态磁性能的影响

IF 0.7 4区材料科学

稀有金属材料与工程 Pub Date : 2018-07-01 DOI: 10.1016/S1875-5372(18)30164-4

Shahid Imran , Yin Ge , Yuan Jun , Ma Yungui , He Sailing

{"title":"FeGaB(25 nm)/Al2O3/FeGaB(25 nm) Multilayer Structures: Effects of Variation of Al2O3Thickness on Static and Dynamic Magnetic Properties","authors":"Shahid Imran , Yin Ge , Yuan Jun , Ma Yungui , He Sailing","doi":"10.1016/S1875-5372(18)30164-4","DOIUrl":"https://doi.org/10.1016/S1875-5372(18)30164-4","url":null,"abstract":"<div>Iron-gallium (FeGa) thin film has the unique advantages in designing integrated magnetic sensors or chips due to its relatively large magnetostrictive constant compared with other soft magnetic materials. In this work, non-magnetic doping and laminating methods have been employed to control the magnetic and electric properties of this alloy film. By doping a certain amount of boron (B), the coercivities are largely decreased for samples of thickness less than ∼30 nm. For thicker films, we find that inserting an ultrathin Al2O3 middle layer is very helpful to control the coercivities with negligible influence on saturation magnetization (Ms). The smallest easy-axis coercivity of 0.98×79.6 A/m is obtained in the multilayer film FeGaB(25 nm)/Al2O3(0.5 nm)/FeGaB(25 nm). In this case, the resistivity is enhanced by 1.5 times compared with the 50 nm single layer film. Structural characterizations indicate the reductions of crystalline quality and physical dimension of the magnetic grains playing important roles in softening the magnetic properties. Besides, the influences of magnetostatic interaction and morphology characteristics are also considered in facilitating domain reversal. High permeability spectra with gigahertz response are obtained for our multilayer films. The methodology applied here, i.e., enhancing magnetic and electric performance by introducing ultrathin non-magnetic layers, could be translated to other species of soft magnetic materials as well.</div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 7","pages":"Pages 1951-1957"},"PeriodicalIF":0.7,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30164-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91667576","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: 5