| Corrosion and high-temperature oxidation of AM60 magnesium alloy |
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| 引用本文： | 芦笙 周晓燕 陈静 候志丹. Corrosion and high-temperature oxidation of AM60 magnesium alloy[J]. 中国有色金属学会会刊, 2007, 17(A01): 156-160 |
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| 作者姓名： | 芦笙 周晓燕 陈静 候志丹 |
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| 作者单位： | [1]Department of Materials Science and Engineering,Jiangsu University of Science and Technology, Zhenjiang 212003, China [2]Department of Mechanical Engineering,Jiangsu University of Science and Technology, Zhenjiang 212003, China |
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| 基金项目： | Project （JSAWT-06-08） supported by the Key Laboratory of Advanced Welding Technology of Jiangsu Province, China |
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| 摘 要： | The corrosion and high-temperature oxidation characteristics of AM60 Mg alloy in different environments were investigated by immersion test, electrochemical polarizing analysis and differential thermal analysis （DTA）/thermo gravimetric （TG） experiments. The influence of aging heat treatment on the corrosion resistance of AM60 Mg alloy was studied. AM60 Mg alloy shows better corrosion resistance in sea water than in 3.5%（mass fraction） NaCI solution. The corrosion resistance after aging for 24 h is better than that of both as-cast and aging for 48 h. Corrosion resistance of Mg alloy is controlled by microstructure, composition of a-matrix. Precipitation offl phase along the grain boundaries acts as a barrier that decreases corrosion rate, whereas the decrease of aluminum content of a phase causes an increase in the corrosion rate. The DTA and TG curves of heating process in air are characterized with combustion after 590℃. When heated in helium, the curves show two endothermic peaks and a remarkable evaporation of magnesium. As for isothermal DTA and TG experiments, mass increment caused by oxidation does not happen till 520 ℃.
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| 关 键 词： | 镁合金 抗腐蚀特性 微观结构 物理结构 |
| 收稿时间： | 2007-07-15 |
| 修稿时间： | 2007-09-10 |
Corrosion and high-temperature oxidation of AM60 magnesium alloy |
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| LU Sheng, ZHU Xiao-yan, CHEN Jing. HU Zhi-dan. Corrosion and high-temperature oxidation of AM60 magnesium alloy[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(A01): 156-160 |
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| Authors: | LU Sheng ZHU Xiao-yan CHEN Jing. HU Zhi-dan |
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| Affiliation: | LU Sheng, ZH0U Xiao-yan, CHEN Jing. H0U Zhi-dan |
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| Abstract: | |
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| Keywords: | AM60 magnesium alloy corrosion oxidation microstructure aging |
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