Abstract
To improve the performance of the 35CrMo sucker rod during operation, the microstructure, microhardness and wear properties of the TiC/Ni-based composite coating prepared by induction high frequency cladding at different solution treatment temperatures were investigated. The results show that the coating consists mainly of γ-Ni, Ni3Fe, Cr23C6, CrB, TiC, SiB6, NiCr2O4 and Fe2O3 phases after solution treatment. The average microhardness of the coating increased from 835.7 HV0.2 before the heat treatment to a maximum of 890.3 HV0.2, an increase of 6.5%. The wear resistance of the coating increases first and then decreases with the increase of solution treatment temperature. When the solution temperature is 950 °C, the wear resistance is best. The wear mechanism of the coating and friction pair is mainly adhesive wear and abrasive wear, and accompanied by brittle fracture.
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