Long-term oxidation resistance and deterioration mechanism of magnetron sputtered Cr-Al-Si-N coatings on zirconium alloys in 1200 °C steam atmosphere

被引：25
作者：
Zhu, Han [1 ,2 ]
Liu, Haiyong [1 ]
Zhou, Jingyuan [1 ]
Dong, Yue [1 ]
Li, Peng [1 ]
Chen, Leilei [1 ]
Yi, Jun [2 ]
Huang, Qing [1 ]
Huang, Feng [1 ]
Ge, Fangfang [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Peoples R China
[2] Shanghai Univ, Sch Mat Sci & Engn, Inst Mat, Shanghai 200444, Peoples R China
来源：
CORROSION SCIENCE | 2020年 / 171卷
基金：
中国国家自然科学基金;
关键词：
Zirconium; Sputtered films; TEM; Oxidation; HIGH-TEMPERATURE OXIDATION; CHROMIUM-BASED COATINGS; ISOTHERMAL OXIDATION; COATED ZIRCALOY-4; BEHAVIOR; PROTECTION; STABILITY;
D O I：
10.1016/j.corsci.2020.108603
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Oxidation behavior of magnetron sputtered Cr-Al-Si-N coatings on zirconium-alloy coupons was studied in 1200 degrees C steam up to 8 h, revealing the microstructural evolution and the oxidation resistance by electron microscopy. A similar to 310 mu m thick Zr-O layer formed on the uncoated coupon after the 6 h oxidation, whereas the coated coupon retained almost unoxidized, due to a homogenous and stable bilayer scale of Cr2O3/alpha-Al2O3 on the surface. It was assumed that the column-free structure and isotropic nanostructure of coatings could favor a timely and in situ formation of the bilayer scale, followed by long-term maintenance of its integrity.
引用
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页数：9
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