HIGH-TEMPERATURE OXIDATION OF ZIRCONIUM HYDRIDE POWDERS

被引：13

作者：

SHEMET, VZ ^{[1
]}

LAVRENKO, VA ^{[1
]}

TEPLOV, OA ^{[1
]}

RATUSHNAYA, VZ ^{[1
]}

机构：

[1] ACAD SCI KIEV,INST MAT SCI PROBLEMS,KIEV,UKRAINE,USSR

来源：

OXIDATION OF METALS | 1992年 / 38卷 / 1-2期

关键词：

KINETICS; OXIDATION; ZIRCONIUM HYDRIDE;

D O I：

10.1007/BF00665046

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The oxidation kinetics of zirconium-hydride powders were studied in the temperature range of 298-1378 in air at atmospheric pressure. TG, DTA, DSC, x-ray analysis, and scanning electron microscopy were used. The results obtained are in accordance with the proposed pseudo-parabolic model of zirconium-hydride oxidation. This model includes the initial linear mode of oxide growth with oxygen diffusion through a non-solid film of ZrO2 of variable depth and a stationary diffusion process followed by oxide sintering. It has been established that the activation energy of the limiting stage of oxidation (238.3 kJ/mol) coincides with the activation energy of oxygen self-diffusion in monocline ZrO2.

引用

页码：89 / 98

页数：10

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