DZ406合金及其渗铝涂层1100℃氧化性能研究  

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

作　　者：宁礼奎[1] 郑志[1] 张达[1] 邹清川[1,2] 刘峰[1] 刘恩泽[1] 佟健[1] 惠升[1,3] 

机构地区：[1]中国科学院金属研究所,沈阳110016 [2]大连理工大学机械工程与材料能源学部,大连116024 [3]东北大学理学院,沈阳110819

出　　处：《腐蚀科学与防护技术》2011年第5期403-406,共4页Corrosion Science and Protection Technology

摘　　要：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-Al_2O_3,后期表面产物主要为α-Al_2O_3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-Al_2O_3较少,一定时间后全部转变为α-Al_2O_3.Oxidation behavior of DZ406 alloy without and with aluininized 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 flakeθ-Al_2O_3.whileα-Al_2O_3,and spinel phase consisted of Ni、Co、Cr etc.appeared later.However,for aluminized coating,the small amount ofθ-Al_2O_3 formed in the initial stage on the surface and then transformed intoα-Al_2O_3.

关 键 词：DZ406合金 渗铝涂层 氧化 

分 类 号：TG172.82[金属学及工艺—金属表面处理]