STABILITY FIELD OF COTUNNITE-TYPE ZIRCONIA

被引：17

作者：

OHTAKA, O ^{[1
]}

KUME, S ^{[1
]}

ITO, E ^{[1
]}

机构：

[1] OKAYAMA UNIV,INST STUDY EARTHS INTERIOR,MISASA 68202,JAPAN

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 03期

关键词：

electrical conductivity; phases; polymorphs; synthesis; zirconia;

D O I：

10.1111/j.1151-2916.1990.tb06584.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The stability field of cotunnite‐type ZrO2 was determined by both syntheses and measurements of electrical conductivity under pressure using a 6–8 anvil‐type device. The products synthesized below 1000°C were ortho II, whereas those above this temperature were monoclinic when quenched. Abrupt discontinuities in conductivity were observed around 1000°C at 16.5 GPa and around 1050°C at 18 GPa. It is concluded, therefore, that the phase boundary lies a little above about 1000°C at pressures from 15 to 20 GPa with slightly positive slope. The result is consistent with that obtained by synthesis experiment. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：744 / 745

页数：2

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