| Ti-6Al-7Nb and Ti-6Al-4V 합금의 생체활성에 미치는 콜라겐 처리의 영향 |
| 김태호, 이갑호, 홍순익 |
| 충남대학교 신소재공학과 |
| Effect of Collagen Treatment on Bioactivity of Ti-6Al- 7Nb and Ti-6Al-4V Alloys |
| Tae-Ho Kim, Kap-Ho Lee, Sun-Ig Hong |
| Department of Advanced Materials Engineering, Chungnam National University |
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| ABSTRACT |
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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. |
| Key words:
Ti alloys, Biomimetic deposition, Apatite, Collagen, SBF |
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