High temperature oxidation of Y2O3 partially-stabilized ZrO2 composites dispersed with Ni particles

被引：18

作者：

Nanko, M ^{[1
]}

Yoshimura, M ^{[1
]}

Maruyama, T ^{[1
]}

机构：

[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Met & Ceram Sci, Tokyo 1558552, Japan

来源：

MATERIALS TRANSACTIONS | 2003年 / 44卷 / 04期

关键词：

high temperature oxidation; ceramic composite dispersed with metallic particles; partially-stabilized ZrO2 dispersed with nickel; particles; kinetics; functionally graded materials;

D O I：

10.2320/matertrans.44.736

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High temperature oxidation of Y2O3-partially stabilized ZrO2 composites dispersed with Ni particles was investigated at temperatures ranging from 873 to 1073 K in air. Cracks between Ni particles forms parallel to the surface during high temperature oxidation. Thickness of the cracked zone increases proportionally with increasing oxidation time. A model for the growth of the cracked zone was established as a basis of the oxidation of Ni particles by permeation of oxide ions through the Y2O3-partially stabilized ZrO2 matrix, which is rate-controlled by hole conduction. Growth behavior calculated by the model is in good agreement with the experimental results.

引用

页码：736 / 742

页数：7

共 23 条

[1] OXIDATION BEHAVIOR OF SIC-WHISKER-REINFORCED ALUMINA ZIRCONIA COMPOSITES [J].