采用模拟体液浸泡法评价碱液处理TLM(Ti-25Nb-3Zr-2Sn-3Mo)合金的生物活性.钛合金TLM经过碱液处理后表面生成了钛(铌)酸钠凝胶层,凝胶层厚度随碱液浓度升高而增加.在模拟体液中浸泡43h后,碱液处理钛表面只有少量磷灰石晶核生成,而碱液处理TLM合金表面有五水磷酸八钙晶粒形成,磷灰石的形核也较多.钛合金TLM在碱液处理时生成的钛(铌)酸钠凝胶层厚于纯钛,而较厚的凝胶层使其生物活性提高.
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