INTERFACE IN HYDROXYLAPATITE COATED TI6Al4V ALLOYS

机译：羟基磷灰石涂覆的Ti6Al4V合金界面

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The aim of the present study is to develop a better understanding of the interface reaction between hydroxylapatite and Ti6Al4V alloys. Hydroxylapatite coatings on Ti6Al4V, Hydroxylapatite-metallic titanium powder, hydroxylapatite-titania composites were prepared via air sintering and/or hot isostatic pressing (HIP). The reaction between components was monitored with EPMA line scanning technique, XRD, and thermal analysis. EPMA analysis on the interface between the hydroxylapatite and Ti6Al4V alloy showed interdiffusion profiles of all the hydroxylapatite and alloy elements suggesting interfacial bonding. The experiments on the composites showed no significant reaction between hydroxylapatite and metallic titanium in the vacuum environment. However, a reaction occurred between hydroxylapatite and titanium oxide, which formed CaTiO3 with a perovskite structure, Ca_3(PO_4)_2 (tri-calcium phosphate; whitlockite) and water. Presence of air in the sintering environment promoted this reaction.

机译：本研究的目的是更好地了解羟基磷灰石和Ti6Al4V合金之间的界面反应。通过空气烧结和/或热等静压（HIP）制备Ti6Al4V，羟胺磷灰石 - 金属钛粉末，羟基磷灰石 - 金属钛粉末，羟基磷灰石 - 二氧化钛复合材料。用EPMA扫描技术，XRD和热分析监测组分之间的反应。羟基磷灰石与Ti6Al4V合金之间的界面的EPMA分析显示了所有羟基磷灰石和合金元素的间隔曲线，暗示界面粘合。复合材料的实验显示在真空环境中羟基磷灰石和金属钛之间没有显着反应。然而，在羟基磷灰石和氧化钛之间发生反应，其用钙钛矿结构，Ca_3（PO_4）_2（三钙磷酸钙;纺锤铁）和水。烧结环境中的空气的存在促进了这种反应。

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《Biennial Conference on Engineering Systems Design and Analysis》|2004年||共5页
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Celalettin Ergun; Zafer Evis; Robert H.Doremus; American Society of Mechanical Engineers(ASME);
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INTERFACE IN HYDROXYLAPATITE COATED TI6Al4V ALLOYS

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