| 几种阳离子置换磷酸钙生物陶瓷的XRD分析 |
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| 引用本文： | 付涛,郭振琪,张玉梅,憨勇,徐可为. 几种阳离子置换磷酸钙生物陶瓷的XRD分析[J]. 硅酸盐学报, 2000, 28(3): 273-274 |
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| 作者姓名： | 付涛 郭振琪 张玉梅 憨勇 徐可为 |
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| 作者单位： | 1. 西安交通大学金属材料强度国家重点实验室,西安,710049
2. 西北大学分析测试中心,西安,710069 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划，中国科学院资助项目，96年度，59872026，， |
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| 摘 要： | 磷酸钙生物陶瓷中存在阳离子置换现象。对可吸收Ｃａ２ＮａＫ（ＰＯ４）２陶瓷，湿法合成的含锶和空镧羟基磷灰石进行Ｘ射线衍射（ＸＲＤ）分析发现：Ｃａ２ＮａＫ（ＰＯ４）２可看作Ｎａ＾＋在ＫＣａＰＯ４中的固溶体，其热稳定性变差，分解出磷酸三钙和氧化钙，相同配普下含镧羟基磷灰石的衍射峰的宽化和弱化更严重，其热稳定性更差。
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| 关 键 词： | 磷酸钙 生物陶瓷 XRD 阳离子置换 |
| 修稿时间： | 1999-08-09 |
XRD ANALYSIS OF SEVERAL CATION-SUBSTITUTED CALCIUM PHOSPHATE BIOCERAMICS |
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| Fu Tao,Guo Zhenqi,Zhang Yumei,Han Yong,Xu Kewei. XRD ANALYSIS OF SEVERAL CATION-SUBSTITUTED CALCIUM PHOSPHATE BIOCERAMICS[J]. Journal of The Chinese Ceramic Society, 2000, 28(3): 273-274 |
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| Authors: | Fu Tao Guo Zhenqi Zhang Yumei Han Yong Xu Kewei |
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| Abstract: | Cation substitution exists in calcium phosphate bioceramics. X -ray diffraction(XRD) method is utilized to analyze the absorbable Ca 2NaK(PO 4) 2 ceramic, the strontium_containing and lanthanum_containing hydroxyapatite(HA)synthesized by wet method. Ca 2NaK(PO 4) 2 may be considered as a solid solution of Na in KCaPO 4,and its diffraction angles lie between KCaPO 4 and NaCaPO 4. Strontium in HA decreases the diffraction angles, and broadens and weakens the diffraction peaks of HA. It also decreases the thermal stability of HA, which deco_mposes into tricalcium phosphate and calcium oxide. As for lanthanum_containing HA at the same addition ratio, the broadening and weakening of the diffraction peaks of hydroxyapatite are more significant, and the thermal stability is even worse. |
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| Keywords: | calcium phosphate bioceramic |
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