Wettability Modification for Biosurface of Titanium Alloy by Means of Sequential Carburization

doi:10.1016/S1672-6529(08)60116-X

Abstract

Abstract:

Microporous titanium carbide coating was successfully synthesized on medical grade titanium alloy by using sequential carburization. Changes in the surface morphology of titanium alloy occasioned by sequential carburization were characterized and the wettability characteristics were quantified. Furthermore, the dispersion forces were calculated and discussed. The results indicate that sequential carburization is an effective way to modify the wettability of titanium alloy. After the carburization the surface dispersion force of titanium alloy increased from 76.5 × 10⁻³ J•m⁻² to 105.5 × 10⁻³ J•m⁻², with an enhancement of 37.9 %. Meanwhile the contact angle of titanium alloy decreased from 83? to 71.5?, indicating a significant improvement of wettability, which is much closer to the optimal water contact angle for cell adhesion of 70?.

Key words: biotribology, wettability, titanium alloy, sequential carburization, biosurface

Yong Luo, Shi-rong Ge, Zhong-min Jin. Wettability Modification for Biosurface of Titanium Alloy by Means of Sequential Carburization[J].J4, 2009, 6(3): 219-223.

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