Preparation of high-temperature stabilized β-tricalcium phosphate by heating deficient hydroxyapatite with Na4P2O7•10H2O addition
Preparation of high-temperature stabilized β-tricalcium phosphate by heating deficient hydroxyapatite with Na4P2O7•10H2O addition
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DOI：
10.1016/s0142-9612(98)00040-4
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发表时间：
1998-06-01
期刊：
影响因子：
14
通讯作者：
Sun, JS
中科院分区：
文献类型：
--
作者：
Lin, FH;Liao, CJ;Sun, JS
以缺钙型HAP（d-HAP，Ca 10-x（HPO 4）（x）（PO 4）（6-x）（OH）（2-x））为原料，与十水焦磷酸钠（NP，Na 4P 2 O 7）反应，制备了高温稳定的β-磷酸三钙（β TCP，β-Ca 3（PO 4）（2））。10 H（2）O）加成。将β TCP、d-HAP和掺杂2.5，5，7.5和10wt% NP的d-HAP加热至不同温度，并通过X射线衍射分析（XRD）和傅立叶变换红外光谱（FTIR）进行研究。结果表明，d-HAP的HPO_（42）-在650 ℃之前发生缩合生成P_2O_（74）-。当d-HAP加热至750 ℃时，在FTIR光谱中可以追踪到P2 O 74-离子。P2 O 74-与OH-的反应不是立即发生的，而是在很宽的温度范围内发生的。掺杂NP后d-HAP的热分解温度降低。NP掺杂d-HAP不仅在低温下诱导了d-HAP的分解，而且在高温下稳定了β TCP的晶体结构。它还可以将β TCP到α TCP的转化温度从1180摄氏度提高到1300摄氏度。我们可以通过加热NP掺杂的d-HAP成功地制备高温（高达1300摄氏度）稳定的β TCP。(C)1998由Elsevier Science Ltd.出版。保留所有权利。
In this paper, the high-temperature stabilized beta-tricalcium phosphate (beta TCP, beta-Ca-3(PO4)(2)) were prepared by heating the deficient HAP (d-HAP, Ca10-x(HPO4)(x)(PO4)(6-x)(OH)(2-x)) with tetra-sodium diphosphate decahydrate (NP, Na4P2O7. 10H(2)O) addition. The beta TCP, d-HAP and d-HAP doped with 2.5, 5, 7.5 and 10 wt % NP were heated to different temperatures and were investigated by X-ray diffraction analysis (XRD) and Fourier-transformed infrared spectroscopy (FTIR). The results demonstrated that the HPO42- of d-HAP condensed into P2O74- occurred before 650 degrees C. The P2O74- ions could be traced in the FTIR spectrum when the d-HAP was heated up to 750 degrees C. The reaction of P2O74- with OH- did not occur instantly but over a wide range of temperatures. The d-HAP doped with NP would decrease the decomposition temperature of d-HAP. NP doped into d-HAP not only induced the d-HAP decomposition at lower temperature but also stabilized the beta TCP crystal structure at higher-temperature. It could also increase the conversion temperature of beta TCP to alpha TCP from 1180 degrees C up to 1300 degrees C. We could successfully prepare high-temperature (up to 1300 degrees C) stabilized beta TCP by heating NP doped d-HAP. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.