Improvement of Tribological Behavior of Biomedical Nanostructured Titanium by Magnetron Sputtered SiC Films

Abstract:

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The nano-indentation and friction/wear properties of a magnetron sputtered SiC (silicon carbon) films on nanostructured titanium (produced by severe plastic deformation) substrate were investigated. The results show that the films exhibited low nano-hardness (10.6 GPa), low Young's modulus (83.3 GPa) and high hardness-to-modulus ratio (0.128). As sliding against Si3N4 (silicon nitride) balls (2 mm in radius) under Kokubo simulation body fluid (SBF) at room temperature, the films displayed superior friction/wear properties at the considerably high normal load of 1000g, with the friction coefficient of about 0.18, the special wear rate on the order of 10−6 mm3 N-1m-1 without film cracking and interface delaminating. The impressive film cracking and interface delaminating resistance is in accordance with the low hardness (high ductility) of the films and the small film-substrate modulus difference that was caused by the low modulus of the films.

Info:

Periodical:

Advanced Materials Research (Volumes 189-193)

Edited by:

Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang

Pages:

1040-1044

DOI:

10.4028/www.scientific.net/AMR.189-193.1040

Citation:

T. F. Zhang et al., "Improvement of Tribological Behavior of Biomedical Nanostructured Titanium by Magnetron Sputtered SiC Films", Advanced Materials Research, Vols. 189-193, pp. 1040-1044, 2011

Online since:

February 2011

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$35.00

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