超音速氧焰喷涂HA/BG涂层的制备及表征
Research on Properties of HA/BG Coatings Prepared by HVOF Spraying
鲍益富, 翁 杰, 冯 波, 段 可
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作者单位：(西南交通大学 材料先进技术教育部重点实验室, 四川 成都 610031)
中文关键字：超音速氧焰喷涂； 羟基磷灰石； 生物玻璃； 生物活性
英文关键字：high velocity oxygen-fuel spray; hydroxyapatite; bioactive glass; bioactivity
中文摘要：利用超音速氧焰喷涂(HVOF)在Ti6Al4V基体上制备了羟基磷灰石(HA)/生物玻璃（BG）涂层,考察了涂层的相组成、表面形貌及生物活性。XRD显示：涂层的结晶相为HA，未检测到HA分解产物，添加生物玻璃不影响涂层的相组成；SEM结果表明：HA颗粒熔化较少，计算熔化比例为13%，BG颗粒以球形方式镶嵌在涂层表面，含量小于粉末中的比例；涂层浸泡在模拟体液中7天后发现：添加20%BG的涂层表面有类骨类磷灰石涂层生成，说明添加BG可以提高涂层的生物活性。
英文摘要：Hydroxyapatite (HA) coatings with bioactive glass (BG) was prepared on Ti6Al4V matrix by high velocity oxygen-fuel spray. The phase morphology and bioactivity of the coatings were studied. The X-ray diffraction shows that the coatings are mainly crystalline HA and exhibit no thermal decomposition byproducts. The addition of BG does not affect the coating phases. The SEM observation shows that the HA particles are partially melted, with melting fraction of 13%, and spherical BG particles are incorporated on the HA coating. The BG content of the surface coating is lower than that in input powder. After soaking in simulated body fluid for 7 days, only the coating with 20% BG forms a bone-like apatite, which indicates that the addition of BG increases the bioactivity of the coating.