Restraining the Cr-Zr interdiffusion of Cr-coated Zr alloys in high temperature environment: A Cr/CrN/Cr coating approach

被引：53
作者：
Yang, Jianqiao [1 ]
Shang, Lunlin [2 ]
Sun, Jiyuan [3 ]
Bai, Shuyuan [3 ]
Wang, Shuzhong [1 ]
Liu, Junkai [4 ]
Yun, Di [5 ]
Ma, Dayan [6 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Key Lab Thermo Fluid Sci & Engn MOE, Xian 710049, Peoples R China
[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Peoples R China
[4] Xidian Univ, Sch Adv Mat & Nanotechnol, Xian 710126, Peoples R China
[5] Xi An Jiao Tong Univ, Sch Nucl Sci & Technol, Xian 710049, Peoples R China
[6] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 214卷
基金：
中国国家自然科学基金;
关键词：
Cr coating; Accident tolerant fuel; CrN coating; Interdiffusion; Oxidation; FUEL CLADDING SURFACE; OXIDATION; DEPOSITION; MICROSTRUCTURE; BEHAVIOR;
D O I：
10.1016/j.corsci.2023.111015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, a Cr-CrN-Cr coating was fabricated on Zr alloys to restrain the Cr-Zr interdiffusion of Cr-coated Zr alloys. The early stage diffusion, decomposition, and oxidation behaviors of the coating sample are investigated by a tube furnace equipped with a "fast-in & fast-out tool. The outer and inner Cr layer was transferred into Cr2N by nitrogen, which was formed by the decomposition of the CrN layer. A Zr2N layer formed at the interface between the residual coating and Zr substrate, which acted as a diffusion barrier. After oxidation in a steam environment, the coating structure can be divided into Cr2O3, CrN, Cr2N, and Zr2N (from outside to inside).
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页数：14
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