X-RAY-POWDER DIFFRACTION OF CRYSTALLINE PHASES IN PHOSPHATE BIOGLASS CERAMICS

被引：4
作者：
SCHULZ, C
MIEHE, G
FUESS, H
WANGE, P
GOTZ, W
机构：
[1] TH DARMSTADT,FACHBEREICH MAT WISSENSCH,FACHGEBIET STRUKTURFORSCH,PETERSENSTR 20,D-64287 DARMSTADT,GERMANY
[2] OTTO SCHOTT INST,D-07743 JENA,GERMANY
来源：
ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 1994年 / 209卷 / 03期
关键词：
PHOSPHATE BIOGLASS CERAMICS; NASICON STRUCTURE; BUCHWALDITE; BERLINITE; APATITE; MARICITE; BIOGLASS CERAMICS;
D O I：
10.1524/zkri.1994.209.3.249
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Pure phosphate bioglass ceramics of the system Na2O - CaO - Al2O3 - P2O5 - F- with the additives ZrO2, TiO2 and FeO/Fe2O3 were investigated by X-ray powder diffraction at temperatures up to 750-degrees-C. The glass system with ZrO2 and TiO2 exsolves eight crystalline phases in this temperature range. Three of them are new phosphate phases (U2, U3, U4) whereas NaZr2(PO4)3 and U1 (Na - Ca - (Zr, Ti) - Al-monophosphate), which is isostructural to NaTi2(PO4)3 with space group R3cBAR, belong to the Nasicon-structure-type. Lattice constants of these phases were determined by transmission electron microscopy. Energy dispersive X-ray analysis gave some indication of the chemical composition of the various phases.
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页码：249 / 255
页数：7
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