Crystal chemistry and thermal expansion of Cd0.5Zr2(PO4)(3) and Cd0.25Sr0.25Zr2(PO4)(3) ceramics

被引：38
|
作者：
Brochu, R [1 ]
ElYacoubi, M [1 ]
Louer, M [1 ]
Serghini, A [1 ]
Alami, M [1 ]
Louer, D [1 ]
机构：
[1] FAC SCI RABAT,DEPT CHIM,CHIM SOLIDE LAB,RABAT,MOROCCO
来源：
MATERIALS RESEARCH BULLETIN | 1997年 / 32卷 / 01期
关键词：
inorganic compounds; ceramics; X-ray diffraction; microstructure; thermal expansion;
D O I：
10.1016/S0025-5408(96)00162-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cd0.5Zr2(PO4)(3) (CdZP) and the partially substituted phase Cd0.25Sr0.25Zr2(PO4)(3), prepared by the sol-gel route, belong to the NZP family. The structure of CdZP (S.G.R (3) over bar) has been established by the Rietveld method. The thermal behavior of CdZP, investigated by X-ray powder diffraction, is anisotropic, i.e., the structure expands along c axis and contracts along a axis. Dilatometric measurements and SEM micrographs of ceramics, sintered with 5% ZnO, show that CdSrZP presents the advantage to decrease microcracking, and then anisotropy,occurring during the heating cycle. The thermal expansion coefficient a(bulk) of the ceramic CdSrZP is very small (0.6 x 10(-6)degrees C-1).
引用
收藏
页码：15 / 23
页数：9
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