Structure of Carbonated Hydroxyapatite Based on Rietveld Method
The crystalline structures of B-type carbonated hydroxyapatite (CHA) powders sintered at 700,900 and 1100℃,respectively,were studied by Rietveld analysis of powder X-ray diffraction (XRD) data.A series of structure parameters,including lattice parameters (a and c),bond length and the distortion index of PO4 tetrahedron (D(i)nd) were calculated by Rietveld method to characterize the fine structure of CHA.The broadening effect of XRD reflections was separated to calculate the micro-strain and crystalline size.The results showed that CHA become more stable with the increase of sintering temperature,but the CO32-is almost lost at temperature of 1100℃.The quantitative results about crystal structure of CHA based on crystalline structure simulated by Rietveld method are obtained.
Carbonated hydroxyapatite XRD Rietveld refinement
Ran Xu Ran Junguo Gou Li Chen Jiyong Luo Jiaomin
School of Light industry,Textile and Food,Sichuan University,Chengdu 610065,China;National Engineeri School of Material Science and Engineering,Sichuan University,Chengdu 610065,China National Engineering Research Center for Biomaterials,Sichuan University,Chengdu 610064,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1187-1189
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）