The effect of tetravalent dopants on the unit cell volume of 2Y-TZP and 8Y-SZ

被引：13

作者：

Jang, JW ^{[1
]}

Kim, HK ^{[1
]}

Lee, DY ^{[1
]}

机构：

[1] Woori Dong Myung Dent Mat Res Ctr, Kwang Myung 423600, South Korea

来源：

MATERIALS LETTERS | 2004年 / 58卷 / 7-8期

关键词：

dopants; zirconia; cations;

D O I：

10.1016/j.matlet.2003.08.038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of tetravalent cations on tetragonal zirconia and cubic zirconia were evaluated by investigating lattice parameter variation. XRD observation was made on 2Y-TZP (2 mol% Y2O3-stabilized tetragonal zirconia polycrystals) and 8Y-SZ (8 mol% Y2O3-stabilized zirconia) doped with CeO2, SnO2 and TiO2. The contents of the tetravalent dopants increased within the solubility limits of the dopants in 2Y-TZP and 8Y-SZ. The ionic radii of the Ti4+, Sn4+, Zr4+ and Ce4+ for eight-fold coordination with oxygen ions are 0.74, 0.81, 0.84 and 0.97 Angstrom, respectively. The unit cell volumes of cubic zirconias are in proportion to the ionic radii of dopant cations but the unit cell volumes of tetragonal zirconias are not. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：1160 / 1163

页数：4

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