Evolution of oxide layer during high-temperature oxidation of NiCoCrAlY coating via laser cladding on 304 stainless steel

被引：13
|
作者：
Nie, Jinhao [1 ]
Li, Yuxin [1 ]
Chen, Bowen [1 ]
Yang, Yixin [1 ]
Zhang, Hongjian [1 ]
Liu, Siyuan [1 ]
Wei, Shouzheng [1 ]
Cai, Jie [2 ,3 ]
Guan, Qingfeng [4 ]
机构：
[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China
[2] Jiangsu Univ, Inst Adv Mfg & Modern Equipment Technol, Zhenjiang 212013, Jiangsu, Peoples R China
[3] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Jiangsu, Peoples R China
[4] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China
来源：
MATERIALS LETTERS | 2021年 / 286卷
基金：
中国国家自然科学基金;
关键词：
Laser processing; NiCoCrAlY coating; 304 stainless steel; Oxidation;
D O I：
10.1016/j.matlet.2020.129233
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the evolution of an oxide layer with time at 950 degrees C for NiCoCrAlY coating via laser processing on 304 stainless steel was investigated. The results showed that the NiCoCrAlY coating had a lower oxidation rate and a smaller oxidation weight gain in the whole oxidation process. A Cr2O3 film was formed on the surface of the coating, and Al2O3 appeared in the internal oxidation zone. With an increase in the oxidation time, the Cr2O3 layer gradually lost its protective effect, the spinel increased, and the internal oxidation zone gradually increased. Finally, Al2O3 controlled the subsequent oxidation behavior. (C) 2020 Elsevier B.V. All rights reserved.
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页数：4
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