Corrosion mechanism of CuAl-NiC abradable seal coating system-The influence of porosity, multiphase, and multilayer structure on the corrosion failure
Corrosion mechanism of CuAl-NiC abradable seal coating system-The influence of porosity, multiphase, and multilayer structure on the corrosion failure
复制标题
CuAl-NiC可磨密封涂层体系的腐蚀机理——孔隙率、多相、多层结构对腐蚀失效的影响
DOI：
10.1016/j.jmst.2021.01.068
复制
发表时间：
2021-04-13
影响因子：
10.9
通讯作者：
Li, Ying
中科院分区：
文献类型：
--
作者：
Ni, Yumeng;Zhang, Fan;Li, Ying
In this study, the corrosion behavior of the CuAl-NiC abradable seal coating system in chloride solution was investigated to systematically research the effect of porosity, multiphase, and multilayer structure on the corrosion failure. Through the composition and structure analysis, the corrosion process of the system was predicted and then verified with mercury intrusion porosimetry, cross-section SEM/EDS analysis, and electrochemical measurements. The results demonstrated that the interphase selective corrosion caused the porosity of the top layer to decrease first and then increase during the corrosion development. The interlayer galvanic corrosion, determined by the pore connectivity, is crucial for corrosion failure. (c) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
