Friction/Wear Behaviors of Magnetron Sputtered TiB2-C Composite Films on Ti6Al4V Alloy Substrate

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

doi:10.4028/www.scientific.net/AMR.189-193.979

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Study on Rollers’ Angular Velocity Matching of Rolling Driven Equal Channel Angular Deformation Technology
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Research on Anti-Cracking Performance of Polypropylene Fiber Reinforced Cement Mortar
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Thermoelastic Contact Analysis of Functionally Graded Materials with Properties Varying Exponentially
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 189-193Friction/Wear Behaviors of Magnetron Sputtered...

Friction/Wear Behaviors of Magnetron Sputtered TiB₂-C Composite Films on Ti6Al4V Alloy Substrate

Abstract:

The microstructure and friction/wear properties of TiB₂-C (carbon-doped TiB₂) films in TiB₂-C/SiC double layer films (SiC films as interlayer) deposited on Ti6Al4V alloy substrate using magnetron sputtering technique at room temperature were investigated. The results show that the TiB₂-C films exhibited the microstructural characteristics with nano-scale particles (domains), and the doped-carbon presented in manner of sp³ C-C and sp² C-C bonds i.e. DLC (diamond-like carbon). The interface between the substrate and the SiC films and the interface between the SiC films and the TiB₂-C composite films both showed good adhesion, with obvious element diffusions. As sliding against Si₃N₄ (silicon nitride) balls (2 mm in radius) using ball-on-disc type wear tester at room temperature under Kokubo simulation body fluid (SBF) and 50g load, the TiB₂ -C composite films exhibited the friction coefficient of about 0.14 and the specific wear rate of 10.710-6 mm³ m⁻¹ N⁻¹. It is believed that the superior friction properties of the TiB₂-C films are due to the role of the doped-carbon.