Lanzhou University of Technology Institutional Repository (LUT_IR)
Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys | |
Zhang Jianbin; Liu Junjun; Li Qinglin | |
2019-12 | |
发表期刊 | RARE METAL MATERIALS AND ENGINEERING |
ISSN | 1002-185X |
卷号 | 48期号:12页码:4039-4045 |
摘要 | Al-Mg-Ga-Sn alloys with different Ga contents were prepared by electric furnace melting. The microstructure morphology and composition were characterized by optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffractometry (XRD); the degradation rates were measured in pure water at 30, 40, 70 and 90 degrees C; and the electrochemical performance at room temperature was tested using the electrochemical workstation. The results reveal that in case that Mg+Sn is 10% (mass fraction), Al-Mg-Ga-Sn alloys with 0 wt%, 4 wt%, 8 wt%, 12 wt% and 16 wt% Ga, all contain Al matrix phase and Mg2Sn phase. Moreover, Ga5Mg2 phase appears with the increase in Ga content. The degradability of Al-Mg-Ga-Sn alloys primarily presents start-up with pitting corrosion in aluminum matrix phase, and acceleration with intergranular corrosion between Mg2Sn and Ga5Mg2 compound phases. The initial degradation temperatures of alloys with different Ga contents depend on the content of low melting point elements (Ga+Sn) solved in the aluminum matrix; the alloy with the same Ga content rapidly degrades with elevating temperature, and the degradation reaction kinetics follows Arrhenius equation. Electrochemical analysis at room temperature indicates that as Ga content increases in Al-Mg-Ga-Sn alloy, the corresponding corrosion potential negatively shifts to different extents, while the corrosion current gradually improves. |
关键词 | aluminum alloy degradable microstructure corroded morphology |
收录类别 | SCI ; SCIE |
语种 | 中文 |
WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
WOS记录号 | WOS:000504920800037 |
出版者 | NORTHWEST INST NONFERROUS METAL RESEARCH |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/64300 |
专题 | 省部共建有色金属先进加工与再利用国家重点实验室 材料科学与工程学院 |
通讯作者 | Zhang Jianbin |
作者单位 | Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Zhang Jianbin,Liu Junjun,Li Qinglin. Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(12):4039-4045. |
APA | Zhang Jianbin,Liu Junjun,&Li Qinglin.(2019).Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys.RARE METAL MATERIALS AND ENGINEERING,48(12),4039-4045. |
MLA | Zhang Jianbin,et al."Effect of Ga Content on Microstructure and Degradability of Al-Mg-Ga-Sn Alloys".RARE METAL MATERIALS AND ENGINEERING 48.12(2019):4039-4045. |
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