中文摘要：

以P2O5，Ca（NO3）2·4H2O为原料，无水乙醇为溶剂，通过调节pH值控制凝胶的形成，利用溶胶一凝胶／水热法制备柱状纳米羟基磷灰石（HAP）．通过XRD、FTIR、电镜（TEM、SEM）等检测手段，对凝胶燃烧产物和经水热处理后的粉体相组成、形貌进行分析，探讨HAP晶体形成的原因．结果表明，利用溶胶-凝胶经低温燃烧后形成主晶相为纳米级的HAP，形状以柱状为主，经水热处理后，可得高纯度的HAP柱状晶体（100nm×1800nm），杂以少量粒状纳米粒子（30nm×60nm）．

英文摘要：

Taking P2O5 and Ca（NO3）2 · 4H2O as crude materials and absolute alcohol as solvent, the resultant gel precursors was obtained by adjusting pH. Columnar mancrpowders of hydroxyapatite （HAP） were prepared by means of sol-gel synthesis and hydrothermal processing. The phase composition and morphology of the combustion products of the gel and the hydrothermally synthesized powder were analyzed with XRD, FTIR and electron microscopy （SEM, TEM） . On the basis of it, the mechanism of the phase crystal forming was also analyzed. Results showed that the composition of the main crystal phase of the precursor powder prepared with sol-gel was mano-order HAP with columnar crystalline as its majority. After hydrothermal processing, the columnar crystalline of HAP with high purity （100 nm× 1 800 nm） and few particulate inclusion（30 nm×67 nm） inside could be obtained.