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http://dx.doi.org/10.4191/KCERS.2008.45.1.638

Effect of Collagen Treatment on Bioactivity of Ti-6Al- 7Nb and Ti-6Al-4V Alloys  

Kim, Tae-Ho (Department of Advanced Materials Engineering, Chungnam National University)
Lee, Kap-Ho (Department of Advanced Materials Engineering, Chungnam National University)
Hong, Sun-Ig (Department of Advanced Materials Engineering, Chungnam National University)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.10, 2008 , pp. 638-643 More about this Journal
Abstract
Biomimetic apatite formation and deposition behaviors of Ti-6Al-7Nb and Ti-6Al-4V plates in simulated body fluids(SBF) under various conditions were examined. In case of regular samples without collagen treatments the weight gain due to apatite precipitation on the surface in Ti-6Al-4V was found to be higher than in Ti-6Al-7Nb. In case of collagen-coated samples, the weight gain in Ti-6Al-4V continued to be higher than in Ti-6Al-7Nb, but the difference between the two became smaller. Both Ti-6Al-7Nb and Ti-6Al-4V samples with collagen coating exhibited an appreciable increase of weight gain, which may be caused by the interaction between collagen and $Ca^{+2}$ ions. The weight gain was found to be not much affected by the addition of collagen to SBF. The ill-defined granular structure in the presence of collagen can be associated with the increasing volume fraction of amorphous calcium phosphate.
Keywords
Ti alloys; Biomimetic deposition; Apatite; Collagen; SBF;
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