The effect of TiC content on the microstructure and properties of CoCrMo/TiC composite coating under ultrasonic assistance

Abstract TC4, as a consequence of its low density, strong mechanical strength, and superior resistance to rust, is widely used in a variety of industries, including the chemical industry, aerospace, and navigation. Yet, its employment is restricted to a few particular fields due to its low hardness and low wear resistance. This work focuses on the application of laser cladding technology to manufacture CoCrMo/TiC composite paints on TC4 substrate with different TiC concentrations. The research employs XRD, OM, SEM, and EDS to examine the cladding layer’s chemical makeup and microstructure. Tribological characteristics and micro hardness were also assessed. Results indicate that the cladding layer primarily consists of the bcc phase and fcc second phase. As the TiC percentage increases, the protective coating shows a better mechanical connection to the substrate. The cladding layer is 2.03 times harder than the matrix at 30 wt.% TiC concentration. The cladding layer mostly experiences adhesive and abrasive wear, and there is a noticeable improvement in wear resistance.