Preparation and its high-temperature oxidation behavior of Fe-Al/Al2O3 coating on 316L steel

被引：0
|
作者：
Xiao L.-R. [1 ,2 ]
Su H. [1 ]
Zhao X.-J. [1 ,2 ]
Cai Z.-Y. [1 ,2 ]
Chen W. [1 ]
Yu H.-L. [1 ]
机构：
[1] School of Materials Science and Engineering, Central South University, Changsha
[2] Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2022年 / 32卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Annealing heat treatment; Fe-Al/Al[!sub]2[!/sub]O[!sub]3[!/sub] coating; High temperature oxidation behavior; Hot rolled composite; In-situ oxidation;
D O I：
10.11817/j.ysxb.1004.0609.2021-42199
中图分类号：
学科分类号：
摘要：
Fe-Al/Al2O3 high-temperature anti-oxidant coating was prepared on the surface of 316L steel by hot-rolling composite, annealing heat treatment and in-situ oxidation. The specimens were characterized by using SEM, EDS and XRD, respectively. Meanwhile, the high-temperature oxidation behavior of the in-situ oxidized specimens containing Fe-Al/Al2O3 coating and 316L steel was investigated comparatively. The results show that the hot-rolled composite plate obtained by holding 316L steel and pure aluminum is well bonded, and the average bond strength of composite plate is obtained as 54.47 N/mm2. Then, the composite plate is held at different temperatures for 6 h for annealing heat treatment. The specimens preferably annealed at 750 ℃ for 6 h with optimum thickness were selected to be oxidized in-situ for 1 h. The Fe-Al/Al2O3 coating is obtained, and its cross-sectional structures in order from the surface to the inside are Al2O3, FeAl2, FeAl, α-Fe(Al) and Fe. When the in-situ oxidized specimen and 316L steel were oxidized at 900 ℃ for 72 h, the oxidation process of them conforms to the parabolic law together. While the oxidation mass gain of the in-situ oxidized specimen is only 1/11 of that of 316L steel, which has excellent high temperature oxidation resistance. © 2022, China Science Publishing & Media Ltd. All right reserved.
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页码：823 / 835
页数：12
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