Influence of magnesium doping on the phase transformation temperature of β-TCP ceramics examined by Rietveld refinement
Influence of magnesium doping on the phase transformation temperature of β-TCP ceramics examined by Rietveld refinement
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DOI：
10.1016/j.biomaterials.2004.09.017
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发表时间：
2005-06-01
期刊：
影响因子：
14
通讯作者：
Greil, P
中科院分区：
文献类型：
--
作者：
Enderle, R;Götz-Neunhoeffer, F;Greil, P
研究了Ca-3（PO 4）（2）中Mg掺杂对β-磷酸三钙（β-TCP）向α-磷酸三钙（α-TCP）转变温度的影响。在1025 +/-10 ℃下煅烧的粉末中，β-TCP结构中Ca 2+位点上的Mg 2+最大取代量为14mol%。采用X射线粉末衍射分析（XRPD）结合Rietveld方法（TOPAS 2.1）进行定量相分析和结构细化。合成和表征的Mg掺杂样品在空气气氛中在垂直管式炉中在1460至1680 ℃的合适温度下烧结，随后淬火至室温，以稳定α-TCP。通过差热分析和XRPD分析确定β至α转变温度。(C)2004爱思唯尔有限公司保留所有权利。
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.