等离子体电解氧化制备生物活性多孔纳米TiO2涂层

doi:10.3724/SP.J.1077.2011.00585

无机材料学报 ›› 2011, Vol. 26 ›› Issue (6): 585-590.DOI: 10.3724/SP.J.1077.2011.00585

等离子体电解氧化制备生物活性多孔纳米TiO₂涂层

胡红杰, 刘宣勇, 丁传贤

(中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室, 上海200050)

收稿日期:2010-09-01 修回日期:2010-12-28 出版日期:2011-06-20 网络出版日期:2011-06-07
作者简介:胡红杰(1984-), 男, 博士研究生. E-mail: hhjie@mail.sic.ac.cn
基金资助:
上海市纳米专项基金(0952nm04400); 上海市国际科技合作基金(09520715200); 国家自然科学基金(51071168)

Bioactive Porous and Nanostructured TiOB2 Coating Prepared by Plasma Electrolytic Oxidation

HU Hong-Jie, LIU Xuan-Yong, DING Chuan-Xian

(State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2010-09-01 Revised:2010-12-28 Published:2011-06-20 Online:2011-06-07
Supported by:
Shanghai Science and Technology R&D Fund (0952nm04400); Shanghai-Unilever Research and Development Fund (09520715200); National Natural Science Foundation of China (51071168)

摘要/Abstract

摘要： 采用等离子体电解氧化(PEO)技术, 在纯钛基体上制备了具有多孔和纳米结构并含有不同钙磷含量的氧化钛涂层. 采用扫描电子显微镜和X射线衍射仪研究了涂层的显微结构和相组成. 采用模拟体液浸泡实验评价涂层的生物活性. 研究结果表明: 涂层主要由锐钛矿和金红石相组成, 涂层表面孔径小于10μm, 晶粒直径约10~100nm, 且涂层表面晶粒、涂层厚度、表面粗糙度和涂层中的钙磷元素含量均随着PEO过程中电流密度的增大而增加. PEO涂层在模拟体液中浸泡14 d即能够诱导类骨磷灰石在其表面沉积, 显示出良好的生物活性. 涂层中的钙磷含量和结晶形态对其生物活性起关键作用.

关键词: 氧化钛, 多孔, 纳米, 生物活性, 等离子体电解氧化

Abstract: Porous and nanostructured TiO₂ coatings with different Ca, P contents were prepared on titanium by plasma electrolytic oxidation (PEO) in a Ca and P containing electrolyte at different current densities. The surface morphologies and microstructure of the coatings were observed by scanning electron microscope (SEM). Phase compositions of the coatings were characterized using X-ray diffraction (XRD). Simulated body fluid (SBF) immersion tests were conducted to evaluate the apatite forming ability and bioactivity of coatings. The results reveal that the PEO coatings mainly consist of anatase and rutile phases, their surfaces exhibit grains of about 10-100 nm in size and pores less than 10 μm in diameter. The surface grains, coating thicknesses, surface roughness and Ca, P contents of the coatings all increase with the increase of the applied current density during PEO process. The as-prepared PEO coatings with high Ca and P contents could induce apatite formation after immersed in SBF for 14 d, indicating its good bioactivity. However, PEO coatings with low Ca and P contents or heat-treated coatings are bio-inert. The Ca, P contents of the PEO coatings and its crystallization state play key roles in inducing apatite formation in SBF.

Key words: TiO₂, porous, nanostructured, bioactive, plasma electrolytic oxidation

中图分类号:

TQ178
R318

胡红杰, 刘宣勇, 丁传贤. 等离子体电解氧化制备生物活性多孔纳米TiO₂涂层[J]. 无机材料学报, 2011, 26(6): 585-590.

HU Hong-Jie, LIU Xuan-Yong, DING Chuan-Xian. Bioactive Porous and Nanostructured TiOB2 Coating Prepared by Plasma Electrolytic Oxidation[J]. Journal of Inorganic Materials, 2011, 26(6): 585-590.

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等离子体电解氧化制备生物活性多孔纳米TiO₂涂层

Bioactive Porous and Nanostructured TiOB2 Coating Prepared by Plasma Electrolytic Oxidation

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