[Study on friction and abrasion behavior of TiN film on dental NiCr alloy by plasma magnetron reactive sputter deposition].

PURPOSE: To investigate the effect of TiN film deposited by plasma magnetron reactive sputter deposition technique on the fiction and abrasion behavior of dental NiCr alloy. METHODS: TiN film was deposited on the surface of dental NiCr alloy by plasma magnetron reactive sputter deposition technique. Surface topography of TiN film was observed by electron microscope. The frictional coefficient and abrasive loss in weight were measured by friction and abrasive apparatus. SPSS11.0 software package was used for Student's t test. RESULTS: The surface topography of TiN film was tiny diffusion and homogeneous distribution common burreed tuber structure. The average frictional coefficient of NiCr of none deposition was 0.651 while 0.525 after TiN deposited (P<0.05). The average abrasive loss in weight of none deposition was 0.0113g while 0.0007g after TiN deposited (P<0.05). CONCLUSIONS: Compared with non deposition NiCr, the fiction and abrasion behavior of NiCr with TiN film deposited by plasma magnetron reactive sputter deposition technique is better.