Phase evolution of thermally treated amorphous tricalcium phosphate nanoparticles

被引：0

作者：

Doebelin, Nicola ^{[1
]}

Brunner, Tobias J. ^{[2
]}

Stark, Wendelin J. ^{[2
]}

Eggimann, Manuel ^{[3
]}

Fisch, Martin ^{[3
]}

Bohner, Marc ^{[1
]}

机构：

[1] RMS Fdn, Bischmattstr 12, CH-2544 Bettlach, Switzerland

[2] Swiss Fed Inst Technol, Inst Chem & Bioengn, Dept Chemist & Appl Biosci, CH-8093 Zurich, Switzerland

[3] Univ Bern, Inst Geologie, CH-3012 Bern, Switzerland

来源：

BIOCERAMICS 21 | 2009年 / 396-398卷

关键词：

amorphous calcium phosphate; alpha-TCP; nano-powder; in-situ XRD; Ostwald step rule; NEUTRON POWDER DIFFRACTION; CALCIUM; STABILITY; APATITES; ALPHA;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

X-ray amorphous tricalcium-phosphate nanoparticles (ATCP) produced by flame spray synthesis were heat-treated at temperatures between 500 and 1000 degrees C and analyzed in situ by X-ray powder diffraction. The main phase occurring after crystallisation at 525 degrees C was alpha-TCP, minor phases were identified as beta-TCP and hydroxyapatite. More elevated temperatures induced crystallite growth and the transformation of alpha-TCP into beta-TCP. Above 900 degrees C no alpha-TCP was traceable anymore. alpha'-TCP was not observed in the experiment. This study shows that nanoparticulate alpha-TCP can be obtained by thermal treatment of an amorphous TCP nanoparticle in a temperature range where sintering effects such as particle growth and densification are moderate or nearly negligible.

引用

页码：595 / 598

页数：4

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