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

页码：15 / 23

页数：9

共 25 条

[1] SYNTHESIS AND SINTERING OF CA0.5ZR2P3O12-A LOW THERMAL-EXPANSION MATERIAL [J].