DZ406合金及其渗铝涂层1100℃氧化性能研究

腐蚀学报（英文）, 2011, 23(5): 403-406.

DZ406合金及其渗铝涂层1100℃氧化性能研究

宁礼奎 , 郑志 , 张达 , 邹清川 , 刘峰 , 刘恩泽 , 佟健 , 惠升

1.1. Institute of Metal Research, Chinese Academy of Science, Shenyang 1100162. Faculty of Mechanical Engineering, Materials and Energy, Dalian University of Technology, Dalian 1160243. College of Science, Northeastern University, Shenyang 110819>

关键词： DZ406合金 , aluminized coating , oxidation

Oxidation Behavior of DZ406 Alloy Without and with Aluminized Coating at 1100℃

NING Likui , ZHENG Zhi , ZHANG Da , ZOU Qingchuan , LIU Feng , LIU Enze , TONG Jian , HUI Sheng

Keywords： DZ406 alloy , 渗铝涂层 , 氧化

研究DZ406合金及渗铝涂层在1100℃的氧化行为, 利用扫描电镜(SEM)观察其表面形貌和截面组织. 结果表明, 合金在氧化初期表面产物含有大量的晶须状Θ-Al₂O₃, 后期表面产物主要为α-Al₂O₃和由Ni、Co、Cr等元素组成的尖晶石相; 渗铝涂层表面产物在氧化初期晶须状θ-Al₂O₃较少, 一定时间后全部转变为α-Al₂O₃.

Oxidation behavior of DZ406 alloy without and with aluminized coating in air at 1100℃ was studied, and then their surface morphology and cross sectional microstructure were examined by using SEM. The results showed that in the early stage, the oxide scale on the bare alloy was mainly consisted of flake θ-Al₂O₃, while θ-Al₂O₃, and spinel phase consisted of Ni、Co、Cr etc. appeared later. However, for aluminized coating, the small amount of θ-Al₂O₃ formed in the initial stage on the surface and then transformed into α-Al₂O₃.

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