中文摘要：

采用液相共沉淀方法合成了不同镉摩尔含量X（Cd）（即：Cd/（Ca＋Cd））的镉羟基磷灰石.通过XRD,FT-IR,FE-SEM,TG-DTG-DSC-MS和TCLP对产物的组成、形貌、热稳定性及化学稳定性进行了探讨.结果表明,随着X（Cd）的增加,Cd^（2＋）进入到羟基磷灰石的晶格中依次形成Ca（3.9）（Ca（4.7）Cd（0.7））（PO4）6（OH）（1.8）,Ca（3.8）（Ca（4.1）Cd（0.73））（PO4）6（OH）（1.8）,Ca（3.6）（Ca（4.5）Cd（0.76））（PO4）6（OH）（1.6）和Cd^5（PO4）3OH;这些产物在500℃以下均可稳定存在,且热稳定性随着X（Cd）的增加明显提高;毒性浸出结果显示,Cd^（2＋）能够进入到羟基磷灰石的晶格中,但产物的化学稳定性不高.

英文摘要：

Calcium cadmium hydroxyapatites with various Cd doping （Cd/（Cd＋Ca））were synthesized and characterized by X-ray diffraction, FT-IR spectroscope and FESEM. TG-DTG-DSC-MS and Toxicity Characteristic Leaching Procedure （TCLP） were used to determine their thermal and chemical stability. The results show that Cd^2＋ enters into the hydroxyapatites crystal lattice. And with molar ratios of Cd/（Cd＋Ca） increasing, there forms the phases of Ca3.9（Ca4.TCd0.7）（PO4）6（OH）1.8, Ca3.8 （Ca4.1 Cd0.73） （PO4）6 （OH） 1.8, Ca3.6 （Ca4.5 Cd0.76） （PO4）6 （OH） 1.6 , Cd5 （POa）3OH, respectively. All the calcium cadmium hydroxyapatites are thermal stable up to 500℃, and their thermal stabilities are enhanced with the increase of Cd doping, but their chemical stabilities become worse.