Wear resistance of TiN(Ti2N)/Ti composite layer formed on C17200 alloy by plasma surface Ti-alloying and nitriding

Conductive and tribological properties of TiN-Ag composite coatings under grease lubrication

“…As reported in previous studies, TiN coatings possess excellent anti-wear properties and lower resistance values, however, the wear volume can reach 1.401×10  4 mm 3 under non-current-carrying conditions, which is much higher than the wear rate obtained in this experiment [42]. Adding Ag to TiN can yield better tribological properties, and the lowest wear rate was 1×10  7 mm 3 /(N•mm) with 0.8 at% Ag content under room temperature and non-current-carrying conditions, which was close to the optimal value obtained in this experiment [31].…”

Effects of the Prefabricated Cu-Ti Film on the Microstructure and Mechanical Properties of the Multiphase Coating by Thermo Plasma Nitriding on C17200 Cu Alloy

“…The surface modification by the plasma nitriding or thermo-diffusion process is applied to improve the wear properties of the manufactured parts. Indeed, plasma nitriding of the Ti based alloys has been widely applied to improve the wear properties [1][2][3][4][5][6], and the achieved positive results lead us to expand its application in the surface treatment by the plasma nitriding of the prefabricated Ti film on the Cu alloys and Al alloys [7][8][9][10]. Unfortunately, the surface modification process by simple plasma nitriding process on the alloy substrate resulted in the weak bonding between the coating and the substrate, especially for the fabrication of thick coatings used in harsh environments.…”

“…The simulation results by the first-principle study also indicated the possibility for the formation of these phases and the possible contribution to the improvement of the surface mechanical properties [14,15]. However, the low efficiency of the surface modification process prompts us to propose the novel process by combination of the fabrication of a gradient Cu-Ti film and the plasma nitriding in our recent research, which shows great potentiality to produce the multiphase coating efficiently, with the obtained wear properties at the same level [16], which can also help to solve the problem of weak bonding strength between the single-layered Ti-N coating and the subsurface layer by the formation of Cu-Ti intermetallics between the Cu substrate and the Ti-N surface layer [8]. Actually, the Cu content in the prefabricated film should also contribute to the changing mechanical properties of the coating [17,18].…”

The Effect of Different Arc Currents on the Microstructure and Tribological Behaviors of Cu Particle Composite Coating Synthesized on GCr15 Steel by PTA Surface Alloying

“…They demonstrated that the wear rate is 10-100 times greater and the dominant wear mechanism for low sliding speeds is plastic deformation, while at higher sliding speeds an oxidation mechanism predominates. Liu et al [12] conducted a study on the fabrication of a TiN(Ti 2 N)/Ti composite layer using PTA on C17200 alloy, and successfully obtained a better combination of wear resistance and conductive performance. Cao et al [13] found that synthesizing a high-vanadium high-speed steal alloying layer on nodular cast iron could increase the hardness and improve wear resistance.…”