换流站通电流金具用锆改性铝镁合金的高温氧化行为
High-Temperature Oxidation Behavior of Zirconium Modified Aluminum Magnesium Alloys for Current Carrying Fittings in Converter Stations
摘 要
采用真空感应熔炼方法制备了不同锆含量的Al-Mg-Mn-Cr-Zr合金，通过扫描电镜、能谱仪及高温氧化试验研究了锆添加量对合金在300℃高温氧化行为的影响。结果表明：锆元素的添加能够显著地改善合金的抗高温氧化性能；随着锆添加量的增加，合金的氧化反应速率持续下降，抗高温氧化性能逐渐提高，在试验范围内锆添加量为0.22%时，合金的抗高温氧化性能最优。
铝镁合金
高温氧化
活性元素
氧化反应速率
current carrying fitting
aluminum magnesium alloy
high-temperature oxidation
reactive element
oxidation rate
Abstract
The Al-Mg-Mn-Cr-Zr alloys with different content of Zr were prepared by the method of vacuum induction melting. The effect of Zr addition amount on the high-temperature oxidation behavior at 300℃ was investigated through electron scanning microscopy (SEM), energy dispersive spectroscopy (EDS) and high-temperature oxidation experiment. The results show that the addition of zirconium could significantly improve the high-temperature oxidation resistance of the alloy. With the increase of Zr addition amount, the oxidation reaction rate of the alloy decreased continuously, and the high-temperature oxidation resistance was gradually improved. The alloy had the optimal high-temperature oxidation resistance when the amount of Zr addition was 0.22% in the test range.
中图分类号 TG172 DOI 10.11973/fsyfh-201902004
所属栏目 试验研究
基金项目
收稿日期 2017/9/8
修改稿日期
网络出版日期
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联系人作者郑树会(shuhuiz@126.com)
引用该论文: LI Dongqing,ZHENG Shuhui,ZHOU Lixian,XI Yongping,LIU Shengchun,GU Jian. High-Temperature Oxidation Behavior of Zirconium Modified Aluminum Magnesium Alloys for Current Carrying Fittings in Converter Stations[J]. Corrosion & Protection, 2019, 40(2): 101
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