Effect of Plasma Electrolytic Oxidation Coating on Corrosion Behavior of Zirconium Alloy in Superheated Steam Condition

被引：1
|
作者：
Li, Zheng-yang [1 ]
Yang, Zhong-bo [1 ]
Cai, Zhen-bing [2 ]
Jiao, Yong-jun [1 ]
机构：
[1] Nucl Power Inst China, Sci & Technol Reactor Syst Design Technol Lab, Chengdu 610213, Peoples R China
[2] Southwest Jiaotong Univ, Tribol Res Inst, Key Lab Adv Technol Mat, Chengdu 610031, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2024年 / 33卷 / 16期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
corrosion mechanism; microstructure; plasma electrolytic oxidation coating; zirconium alloy; MICRO-ARC OXIDATION; OXIDE; MICROSTRUCTURE; RESISTANCE; INTERFACE;
D O I：
10.1007/s11665-023-08530-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Plasma electrolytic oxidation (PEO) coating on Zr alloy was prepared, and the corrosion behavior was investigated under 400 & DEG;C/10.3 MPa steam condition. The surface morphology, roughness, element distribution, and microstructure of PEO coating after corrosion were analyzed. The results indicate that the PEO coating after corrosion presents the typical pores and pancake structure feature, and the surface roughness of PEO coating decreases after corrosion. The PEO coating corroded for 45 days shows the best electrochemical performance because the newly formed oxide gathers to repair the pores and cracks in the oxide/metal interface. The corrosion resistance of PEO coating decreases with the corrosion time increase because the microcrack in PEO coating is connected to generate a large transverse crack, and the corrosion media can access to oxidize the substrate through the crack during the long-term corrosion process.
引用
收藏
页码：8386 / 8397
页数：12
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