冲击波合成羟基磷灰石粉体及其性能研究

Study on Properties of Hydroxyapatite Powder Synthesized by Shock Wave Treatment Method

利用冲击波技术来处理CaCO3与CaHPO4·2H2O的混合物,合成了羟基磷灰石(HA)粉末,并对制得的粉末进行了结构和组成分析。研究结果表明:冲击波法合成的HA粉末与传统的高温焙烧法获得的HA粉末有类似的晶相结构及成分,且含有少量CO32-离子,为类人骨的羟基磷灰石;其粒度更细、分布更均匀、内部存在大量的晶格畸变,有更高的活性;其XRD数据更接近动物骨的参数,有利于植入人体后的骨性结合与生长。

Hydroxyapatite(HA) powders were prepared by shock wave treatment method using the mixture of CaCO3 and CaHPO4·2H2O as raw materials. Structure and components of the HA powders were characterized by XRD, SEM, and FT-IR. It has been shown that the structure and component of HA powders prepared by shock wave treatment are similar to them prepared by calcinations.The HA powders prepared by shocked wave treamtment have a little CO32- ions, and its XRD data are smaller and uniform grain size, are closer to bone crystals in XRD data, which is advantageous to the use in bone prostheses. The HA powders also have much higher activity because of the existing of strain and dislocation defects of crystals.