Thermal stability of a modified sol-gel derived hydroxyapatite nanopowders

被引：3
|
作者：
Herradi, S. [1 ]
El Bali, B. [1 ]
Khaldi, M. [1 ]
Lachkar, M. [1 ]
机构：
[1] Univ Sidi Mohamed Ben Abdellah, Engn Lab Organometall & Mol Mat, CNRST URAC19, Fac Sci, POB 1796 Atlas, Fes 30000, Morocco
来源：
XII MAGHREB DAYS OF MATERIAL SCIENCES | 2017年 / 186卷
关键词：
BETA-TRICALCIUM PHOSPHATE; CALCIUM; CERAMICS; NANORODS;
D O I：
10.1088/1757-899X/186/1/012023
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Hydroxyapatite Ca-10(PO4)(6)(OH)(2) (HA) powder was successfully synthesized by a modified sol-gel method using a solution of calcium nitrate in ethanol, along with a solution of diammonium hydrogen phosphate in water and NH4OH as starting materials. The Ca/P molar ratio was maintained at 1.67. The powder was subjected to furnace and microwave heating to compare the decomposition of HA and study the crystallite sizes. It was found that microwave heated powders were pure HAP up to 230 degrees C with absence of secondary phases. However, XRD patterns show that furnace heated powders convert completely to beta-TCP when treated at 750 degrees C and 1000 degrees C. This result was confirmed by the absence of hydroxyl bands in the FT-IR spectra for these temperatures.
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页数：6
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