A new technique was introduced that TiN permeation layer composed of diffusion and deposition layer was synthesized on the surface of Q235 steel using plasma point discharge and hollow cathode effect, and then TiB2 fi...A new technique was introduced that TiN permeation layer composed of diffusion and deposition layer was synthesized on the surface of Q235 steel using plasma point discharge and hollow cathode effect, and then TiB2 film was deposited （PVD） on newly-formed surface to create TiN/TiB2 multi-permeation layer. The thickness of this multi-permeation layer is above 10μm and the composition and hardness have graded distribution. It has metallurgical bonding with substrate and the bonding strength is high without any spallation phenomenon. In addition comparative research, between TiN/TiB2 multi-permeation layer and TiB2 film which is directly deposited （PVD） on Q235 steel substrate, on surface appearance, microhardness and friction-abrasion property was carried out. The results show that both of surface consist of uniform, compact and fine cellular structure. Surface microhardness of TiN/TiB2 multi-permeation layer is higher, reaching HV2600; but its average friction coefficient is lower, abrasion crack is shallower and wear resistance is better.展开更多
High quality TiN multi-layer was obtained on steel substrate by combined technology of plasma glow discharge sputtering, hollow cathode effect and interfacial diffusion. The TiN multi-layer consists of deposition laye...High quality TiN multi-layer was obtained on steel substrate by combined technology of plasma glow discharge sputtering, hollow cathode effect and interfacial diffusion. The TiN multi-layer consists of deposition layer and diffusion layer. Its morphology, structure and chemical compositions were analyzed. The microhardness and wear resistance were measured. The results indicate that the diffusion of Ti and N into the substrate leads to a strong interfacial adhesion. The thickness of TiN multi-layer is about 10μm. The strongest diffraction is on the (200) crystal plane of TiN. The surface hardness is about to 2300(HV_ 0.1). The wear resistance of the TiN ceramic alloying multi-layer is excellent and the friction coefficient is low under dry sliding conditions.展开更多
文摘A new technique was introduced that TiN permeation layer composed of diffusion and deposition layer was synthesized on the surface of Q235 steel using plasma point discharge and hollow cathode effect, and then TiB2 film was deposited （PVD） on newly-formed surface to create TiN/TiB2 multi-permeation layer. The thickness of this multi-permeation layer is above 10μm and the composition and hardness have graded distribution. It has metallurgical bonding with substrate and the bonding strength is high without any spallation phenomenon. In addition comparative research, between TiN/TiB2 multi-permeation layer and TiB2 film which is directly deposited （PVD） on Q235 steel substrate, on surface appearance, microhardness and friction-abrasion property was carried out. The results show that both of surface consist of uniform, compact and fine cellular structure. Surface microhardness of TiN/TiB2 multi-permeation layer is higher, reaching HV2600; but its average friction coefficient is lower, abrasion crack is shallower and wear resistance is better.
文摘High quality TiN multi-layer was obtained on steel substrate by combined technology of plasma glow discharge sputtering, hollow cathode effect and interfacial diffusion. The TiN multi-layer consists of deposition layer and diffusion layer. Its morphology, structure and chemical compositions were analyzed. The microhardness and wear resistance were measured. The results indicate that the diffusion of Ti and N into the substrate leads to a strong interfacial adhesion. The thickness of TiN multi-layer is about 10μm. The strongest diffraction is on the (200) crystal plane of TiN. The surface hardness is about to 2300(HV_ 0.1). The wear resistance of the TiN ceramic alloying multi-layer is excellent and the friction coefficient is low under dry sliding conditions.
