Preparing a high-particle-content Ni/diamond composite coating with strong abrasive ability

摘要

Electrophoretic deposition and electrodeposition techniques are effectivemethods to increase particle content in composite coatings. In this paper, typical non-conductive diamond and conductive molybdenum disulfide were chosen to fabricate composite coatings using such methods. The results indicate that while Ni/MoS_2 composite coatings cannot be achieved using thismethod, high-particle-content Ni/diamond coatings can. The surfacemorphology, particle content and hardness of the Ni/diamond coatings were examined. An anti-wear experiment was performed on the coating under dry sliding conditions in a ball-on-disk tester. The wear resistance of the coatingswas evaluated based on thewear rate, and their abrasive abilitywas assessed bymeasuring thematerial removal rate of the corresponding balls.