期刊
JOURNAL OF BIONIC ENGINEERING
卷 6, 期 3, 页码 219-223出版社
SPRINGER SINGAPORE PTE LTD
DOI: 10.1016/S1672-6529(08)60116-X
关键词
biotribology; wettability; titanium alloy; Sequential carburization; biosurface
资金
- National Nature Science Foundation of China [50535050]
- Vital Foundational 973 Program of China
- foundation of China Scholarship Council [2007CB607605]
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 x 10(-3) J.m(-2) to 105.5 x 10(-3) J.m(-2), with an enhancement of 37.9 %. Meanwhile the contact angle of titanium alloy decreased from 83 degrees to 71.5 degrees, indicating a significant improvement of wettability, which is much closer to the optimal water contact angle for cell adhesion of 70 degrees.
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