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醫(yī)用近β型鈦合金TLM的堿液處理與生物活性
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陜西省科技計(jì)劃項(xiàng)目(2007K06-08)


Alkali Treatment and Bioactivity of Medical Near β-Type Titanium Alloy TLM
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    摘要:

    采用模擬體液浸泡法評(píng)價(jià)堿液處理TLM (Ti-25Nb-3Zr-2Sn-3Mo)合金的生物活性。鈦合金TLM經(jīng)過堿液處理后表面生成了鈦(鈮)酸鈉凝膠層，凝膠層厚度隨堿液濃度升高而增加。在模擬體液中浸泡43 h后，堿液處理鈦表面只有少量磷灰石晶核生成，而堿液處理TLM合金表面有五水磷酸八鈣晶粒形成，磷灰石的形核也較多。鈦合金TLM在堿液處理時(shí)生成的鈦(鈮)酸鈉凝膠層厚于純鈦，而較厚的凝膠層使其生物活性提高

    Abstract:

    The bioactivity of alkali treated TLM (Ti-25Nb-3Zr-2Sn-3Mo) alloy was evaluated by the simulated body fluid (SBF) soaking method. Sodium titanate (niobate) gel layer was formed on the TLM alloy after alkali treatment, and the gel layer thickness was increased with higher alkali concentration. After soaking in SBF for 43 h, only a small quantity of apatite nucleus were formed on alkali treated pure titanium, while Ca8H2(PO4)6·5H2O crystals were detected and there were more apatite nucleus on the alkali treated TLM alloy. Results show that the alkali treated TLM alloy has thicker sodium titanate (niobate) gel layer and consequently possesses higher bioactivity than the alkali treated pure titanium.

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付 濤,王長(zhǎng)鵬,郭戰(zhàn)魁.醫(yī)用近β型鈦合金TLM的堿液處理與生物活性[J].稀有金屬材料與工程,2011,40(5):889~891.[Fu Tao, Wang Changpeng, Guo Zhankui. Alkali Treatment and Bioactivity of Medical Near β-Type Titanium Alloy TLM[J]. Rare Metal Materials and Engineering,2011,40(5):889~891.]
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  • 收稿日期:2010-05-10
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