An in-situ synthesised TiC/Ni60A composite coating on copper by plasma cladding

ABSTRACT

The in-situ synthesis of TiC reinforced Ni-based coatings were prepared on copper substrates by using precursor materials (TiFe and Cr₃C₂) by plasma cladding. The coating consisted mainly of γ-(Cu, Fe, Ni), TiC, CrB and Cr₂₃C₆. The generated TiC particles tend to float up to the upper part of the coating to aggregate and grow, so the TiC concentration in the upper part is larger. The hardness of the TiC composite coating is distributed in a gradient, and the average hardness is 700 HV, which is 13.0 times that of the copper matrix. The wear mechanism of TiC composite coating is abrasive wear, and the wear resistance is 13.0 times that of the copper substrate.

KEYWORDS:

• In-situ
• coating
• TiC particles
• wear resistance

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the [Steel Joint Research Foundation of National Natural Science Foundation of China—China Baowu Iron and Steel Group Co. Ltd. #1] under Grant (numbers U1860108, U1860203); [National Natural Science Foundation of China #2] under Grant (number 52004157); [Independent Research and Development Project of State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, Shanghai University (SKLASS 2020-Z10) and the Science and Technology Commission of Shanghai Municipality #3] under Grant (number 19DZ2270200); [Shanghai Engineering Research Center of Green Remanufacture of Metal Parts #4] under Grant (number 19DZ2252900).