碱处理对钛合金表面微弧氧化涂层中磷灰石形成的影响（英文）

发布时间：2018-01-18 09:24

本文关键词：碱处理对钛合金表面微弧氧化涂层中磷灰石形成的影响（英文）　出处：《Transactions of Nonferrous Metals Society of China》2015年04期 　论文类型：期刊论文

【摘要】：使用3种不同浓度的氢氧化钠溶液对钛合金表面的微弧氧化涂层(MAO)进行改性处理,以提高微弧氧化涂层的生物活性。通过分析经不同浓度碱溶液处理后样品的微观形貌、化学成分、相组成、表面粗糙度、接触角和磷灰石的形成程度等因素,研究碱处理对微弧氧化涂层的影响。实验结果表明,碱处理后的微弧氧化涂层中生成了Na2Ti6O13和Na2Ti3O7相,这两相的生成增加了微弧氧化涂层的表面粗糙度,减小了模拟体液与涂层的接触角。因此,采用不同浓度碱处理能够促进微弧氧化涂层中磷灰石的形成,使涂层表面的生物活性增加。
[Abstract]:Three different concentrations of sodium hydroxide solution were used to modify the micro-arc oxidation coating (Mao) on the surface of titanium alloy. In order to improve the biological activity of micro-arc oxidation coating, the micromorphology, chemical composition, phase composition, surface roughness, contact angle and the degree of apatite formation of the samples treated with different concentrations of alkali solution were analyzed. The effect of alkali treatment on the microarc oxidation coating was studied. The experimental results showed that Na2Ti6O13 and Na2Ti3O7 phases were formed in the alkali treated microarc oxidation coatings. The formation of these two phases increases the surface roughness of the micro-arc oxidation coating and reduces the contact angle between the simulated body fluid and the coating. Therefore, different concentration of alkali treatment can promote the formation of apatite in the micro-arc oxidation coating. The biological activity of the coating surface is increased.
【作者单位】：哈尔滨工业大学(威海)材料学院;
【基金】：Projects(51172050,51102060,51302050)supported by the National Natural Science Foundation of China Project(HIT.ICRST.2010009)supported by the Fundamental Research Funds for Central Universities,China Project(HIT.NSRIF.2014129)supported by the Natural Scientific Research Innovation Foundation in Harbin Institute of Technology,China
【分类号】：TG174.4
【正文快照】： 1 IntroductionTitanium and its alloys are promising biomedicalmetal materials owing to their good biocompatibility,corrosion resistance and mechanical properties such asstrength,hardness and wear resistance,which are widelyused in dental and orthopedic i

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