摘要
采用微弧氧化在纯钛表面合成了含钙和磷的氧化钛膜。研究了电压对膜微观结构和结合强度的影响,并评价了微弧氧化钛膜的生物活性。结果表明:钛微弧氧化膜呈多孔结构,高电压下(450 V)所制备的氧化膜在模拟体液(simulated body fluid,SBF)中浸泡14 d后表面可诱导磷灰石生成,呈现较好的生物活性,低电压下所制备的氧化膜不具备生物活性;其结合强度虽随电压的增大而减小,但在250～450 V的电压范围内结合强度均高于31.4 MPa。
Titanium dioxide films containing Ca and P on the surface of titanium were prepared by micro-arc oxidation. The effect of micro-arc voltage on the microstructure and adhesive strength of the films was studied, and the bioactivity of the films was also evaluated. The results show that titanium dioxide films obtained from micro-arc oxidation have porous structure and the films prepared at high voltage of 450 V can induce apatite to form on its surface after soaked in simulated body fluid(SBF) for 14 d. These films present good bioactivity. However, the films prepared at lower voltage have no bioactivity. Their adhesive strength reduces with the increase of the voltage, but it is higher than 31.4 MPa in the voltage of 250-450 V.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2004年第2期122-126,共5页
Journal of The Chinese Ceramic Society
基金
国家863计划(2002AA326070)
国家自然科学(50001009)
教育部"跨世纪优秀人才培养计划基金(2001年度)资助项目
关键词
徽弧氧化
氧化钛
生物活性
结合强度
Bond strength (chemical)
Morphology
Porosity
Titanium dioxide
X ray diffraction analysis
