Influence of magnesium doping on the phase transformation temperature of β-TCP ceramics examined by Rietveld refinement

被引：216

作者：

Enderle, R

Götz-Neunhoeffer, F

Göbbels, M

Müller, FA

Greil, P

机构：

[1] Univ Erlangen Nurnberg, Dept Mineral, D-91054 Erlangen, Germany

[2] Univ Erlangen Nurnberg, Dept Mat Sci, D-91058 Erlangen, Germany

来源：

BIOMATERIALS | 2005年 / 26卷 / 17期

关键词：

beta-TCP; alpha-TCP; transformation temperature; Mg substitution; Rietveld refinement;

D O I：

10.1016/j.biomaterials.2004.09.017

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 [生物医学工程];

摘要：

The influence of Mg doping in Ca-3(PO4)(2) on the transformation temperature of beta-tricalcium phosphate (beta-TCP) to alpha-tricalcium phosphate (alpha-TCP) was examined. A maximum substitution by 14mol% of Mg2+ on Ca2+ sites in the beta-TCP structure was determined for powders calcinated at 1025 +/- 10degreesC. X-ray powder diffraction analysis (XRPD) in combination with Rietveld method (TOPAS 2.1) was employed for quantitative phase analysis and structural refinement. The synthesized and characterized Mg-doped samples were sintered in air atmosphere in a vertical tube furnace at suitable temperatures ranging from 1460 to 1680degreesC and subsequently quenched to room temperature, in order to stabilize alpha-TCP. The beta to alpha transformation temperatures were determined by differential temperature analysis and XRPD analysis. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：3379 / 3384

页数：6

共 18 条

[1]

PHASE DIAGRAMS OF CA3(PO4)2-MG3(PO4)2 AND CA3(PO4)2-CANAPO4 SYSTEMS [J].