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电泳沉积制备BG/BG-FHA复合涂层

DOI: CNKI:11-1801/TB.20110720.1424.034, PP. 194-199

Keywords: BG/BG-FHA,复合涂层,电泳沉积,力学性能,生物活性

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Abstract:

采用电泳沉积在Ti6Al4V钛合金表面制备了以生物玻璃(BG)为中间层,BG与氟取代磷灰石(FHA)复合粉末为表层的BG/BG-FHA涂层。通过XRD、SEM、EDS和电子万能力学试验机对BG/BG-FHA复合涂层的物相结构、微观形貌和涂层结合力进行了分析,优化了涂层的热处理制度,并通过模拟体液浸泡实验研究了涂层的体外生物活性。结果表明:涂层经过热处理后玻璃(BG)与钛合金基体发生化学反应,有新相Ti3(PO4)4生成,涂层和基体以化学冶金结合,结合力大于20MPa;优化后涂层的热处理制度为:热处理温度750℃,保温12min,随炉冷却。BG/BG-FHA涂层浸泡后表面形成缺钙的类骨磷灰石,成花瓣状生长,长度为几百纳米,具有优良的生物活性。

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