Preparation of Thermally Stable Nanohydroxyapatite by Microwave Process

Abstract

Abstract: Nanosized hydroxyapatite powders were prepared by a microwave process using Ca(NO₃)₂·H₂O and(NH₄)₂HPO₄ as starting materials.
The powder is composed of rod-shaped particle that is about 30nm in width and 80～200nm in length. The synthesized powders were measured by X-ray
diffraction, transmission electron, infrared spectroscopy and thermogravimetric analysis. Various parameters such as time and power of microwave irradiation
have significant effects on thermal stability of hydroxyapatite. The results show that the decomposition temperatures of HAP increase with
time prolonging and power increasing of microwave irradiation. When the time and power of microwave irradiation are 1h and 700W, and the sample treated
at 500℃ for 3h, HAP is still stable at 1200℃.

Key words: microwave process, hydroxyapatite, thermal stability, nanosized powder

CLC Number:

TB383

YANG Zheng-Wen,JIANG Yin-Shan,WANG An-Ping,LI Fang-Fei. Preparation of Thermally Stable Nanohydroxyapatite by Microwave Process[J]. Journal of Inorganic Materials.

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Preparation of Thermally Stable Nanohydroxyapatite by Microwave Process

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