Tribological and Corrosion Properties of the CoCrAlYTaSiC-xCNTs Coatings Deposited by Laser Cladding  

作　　者：Hai Zhao Yi Ding Wei Gao Bo Yu Jinghui Li Mingya Zhang 

机构地区：[1]School of Material Science and Engineering,Anhui University of Technology,Maanshan,243002,China [2]Maanshan Iron&Steel Co.,Ltd,Maanshan,243000,China [3]Applied Technology Research Institute,Jiujiang Vocational University,Jiujiang,332000,China [4]School of Metallurgical Engineering,Anhui University of Technology,Maanshan,243002,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2024年第4期726-738,共13页金属学报（英文版）

摘　　要：The MCrAlY coating has been potential candidate for the parts applied in friction and corrosion conditions, and CNTs (carbon nanotubes) are expected to improve the service performance of coatings owing to high lubrication and low chemical reactivity. In this work, a systematic investigation on the tribological and corrosion properties of CoCrAlYTaSiC-xCNTs coatings deposited by laser melting was analyzed. Results showed that the coatings had good-quality without typical metallurgical defects. The CNTs addition homogenized and refined the microstructure of coating, and also improved the tribological and corrosion properties. As the CNTs content changed from 0 to 4 wt%, the wear rate of coating decreased from 16.23 × 10^(-3) to 7.58 × 10^(-3) mg m^(−1), the jcorr of coating decreased from 4.13 × 10^(-4) to 1.23 × 10^(-4) A cm^(−2), and the Rct values increased from 12.69 to 25.07 Ω cm2.

关 键 词：MCrAlY coating Laser melting deposition FRICTION Electrochemical corrosion 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TG174.4