Oxidation behavior of CrAl coating with and without Nb addition in high temperature steam environment

被引：2
|
作者：
Zeng, Song [1 ]
Li, Junfeng [2 ]
Chen, Chen [1 ]
Meng, Yan [1 ]
Zhu, Chaowen [1 ]
Bao, Yiwang [2 ]
Han, Xiaochun [1 ]
Zhang, Haibin [1 ]
机构：
[1] China Acad Engn Phys, Inst Nucl Phys & Chem, Innovat Res Team Adv Ceram, Mianyang 621900, Peoples R China
[2] China Bldg Mat Acad, State Key Lab Green Bldg Mat, Beijing 100024, Peoples R China
来源：
JOURNAL OF NUCLEAR MATERIALS | 2023年 / 581卷
基金：
中国国家自然科学基金;
关键词：
CrAl coating; Nb addition; Al; 2; O; 3; oxide; High temperature oxidation; DEGREES-C; FE ALLOYS; AL; RESISTANCE; ZIRCALOY-4; DIFFUSION; KINETICS; DEPOSITION; STABILITY; TI2ALC;
D O I：
10.1016/j.jnucmat.2023.154437
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CrAl coatings with and without Nb addition are fabricated and their oxidation behavior at 10 0 0 & DEG;C and 1100 & DEG;C is investigated. Results reveal that Nb addition has a positive effect on forming the stable Al2O3 layer. The oxide layer changes from a porous Al2O3 layer with internal Al2O3 oxides in the CrAl coating into a single dense Al2O3 layer in the CrAl-1.5Nb coating. Adding Nb can significantly maintain the Al inventory of the CrAl coating as well as suppress the outward diffusion of Zr by grain boundary pinning effect, and increases the activity of Al to form a stable Al2O3 layer on the surface, which improve the oxidation performance of CrAl coatings.& COPY; 2023 Elsevier B.V. All rights reserved.
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页数：14
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