Friction/Wear Properties of Magnetron Sputtered TiB2-TiN Composite Films on Biomedical Metallic Titanium Alloy

Xiao Jing Xu; Dan Chen; Xi Ling Xin; Kun Tian; Chun Hang Yu; Xin Lan Sheng

doi:10.4028/www.scientific.net/AMR.284-286.2505

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 284-286Friction/Wear Properties of Magnetron Sputtered...

Friction/Wear Properties of Magnetron Sputtered TiB₂-TiN Composite Films on Biomedical Metallic Titanium Alloy

Abstract:

TiB₂-TiN composite films/SiC films (SiC films as interlayer) were deposited on biomedical titanium alloy (Ti6Al4V) through magnetron sputtering technique. The friction/wear behaviors of the TiB₂-TiN composite films under Kokubo simulation body fluid (SBF) were investigated. The results show that as sliding against Si₃N₄ ball (4 mm in diameter) at 200g load, the TiB₂-TiN composite films exhibited the superior friction/wear properties with the friction coefficient of 0.22, the special wear rate in the magnitude order of 10⁻⁶ mm³ m⁻¹ N⁻¹together without interface delaminating. It was found that the films exhibited navel adhesion to Ca and P elements in Kokubo SBF. The present results demonstrate the possibility of developing the surface modification procedure of combining superior wear resistance and good osseointegration for application of orthopaedic implants.