摘要
对 Ｃａ（ Ｏ Ｈ）２ － Ｈ３ Ｐ Ｏ４ － Ｈ２ Ｏ 直接沉淀法制取β－ Ｃａ３（ Ｐ Ｏ４）２（β－ Ｔ Ｃ Ｐ 的溶液体系以及非化学计量磷灰石的热行为和 Ｃａ Ｈ Ｐ Ｏ４·２ Ｈ２ Ｏ 与 Ｃａ（ Ｏ Ｈ）２ 的热反应等进行了热力分析，提出制备β－ Ｔ Ｃ Ｐ 生物陶瓷粉末的新工艺，解决了湿法制备β－ Ｔ Ｃ Ｐ 工艺中长期存在的固液难以分离的难题，所制得的陶瓷粉末经元素分析和 Ｘ 射线衍射谱分析，表明为 Ｃａ／ Ｐ＝ １ ．５０９ 的无杂相高纯β－ Ｔ Ｃ
The thermodynamic analysis on preparation of beta-tricalcium phosphate (β-Ca 3(PO 4) 2,β-TCP)powders in Ca(OH) 2-H 3PO 4- H 2O system with wet method has been carried out in order to prepare stoichiometric β-TCP with ratio Ca/P=1.50 and to obtain optimum processing conditions.The thermal transformation of nonstoichiometic apatite and several calcium phosphates has been analysed.The problem that filtering of gelatinous precipitate is very difficult is solved.The elementary analysis shows that the prepared powders has a ratio with Ca/P=1.509.The X-ray powder diffracion pattern of sample is determined and its results show that the crystal is pure-TCP.
出处
《昆明理工大学学报（理工版）》
1999年第3期92-96,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
云南省应用基础研究基金
关键词
Β-磷酸三钙
生物陶瓷粉末
氢氧化钙
磷酸
beta-tricalcium phosphate
bioceramic powders
thermodynamic analysis
calcium hydroxide
orthoposphoric acid
