Tribological Behavior of Ti-Coated Diamond/Copper Composite Coating Fabricated via Supersonic Laser Deposition

Diamond/copper composite coating is promising for wear-resistant applications, owing to the extreme hardness of diamond reinforcement. Ti-coated diamond/copper coatings with various laser powers were successfully fabricated employing novel manufacturing technology supersonic deposition (SLD). diamond, which was able enhance wettability between and copper, prepared at optimal parameters via salt bath. Nano-spherical titanium carbides uniformly distributed on diamond’s surface generate a favorable interface bonding copper matrix though mechanical interlocking metallurgical during impact. Furthermore, results showed that transition layer acted as buffer, preventing breakage in coating. SLD can prevent graphitization diamonds due its low processing temperature. The coordination metallization significantly improved tribological properties technique. microhardness power 1000 W reached about 172.58 HV0.1, clearly harder than cold sprayed copper. wear test illustrated exhibited friction coefficient 0.44 minimal rate 11.85 μm3·N−1·mm−1. shows great potential field preparing hard reinforced phase coatings.