High-temperature oxidation of zirconium-hydride powders

The oxidation kinetics of zirconium-hydride powders were studied in the temperature range of 298-1378degreesK 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 z...

Full description

Saved in:
Bibliographic Details
Published in:Oxidation of metals 1992-08, Vol.38 (1-2), p.89-98
Main Authors: SHEMET, V. Z, LAVRENKO, V. A, TEPLOV, O. A, RATUSHNAYA, V. Z
Format: Article
Language:English
Subjects:
360205 - Ceramics, Cermets, & Refractories- Corrosion & Erosion
ACTIVATION ENERGY
Applied sciences
CALORIMETRY
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COHERENT SCATTERING
Corrosion
Corrosion mechanisms
DATA
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
DIFFUSION
ELECTRON MICROSCOPY
ELEMENTS
ENERGY
Exact sciences and technology
EXPERIMENTAL DATA
FUEL ELEMENTS
GRAVIMETRIC ANALYSIS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN STORAGE
INFORMATION
KINETICS
MATERIALS SCIENCE
MATHEMATICAL MODELS
Metals. Metallurgy
MICROSCOPY
NONMETALS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PERMEABILITY
POWDERS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
REACTOR COMPONENTS
REACTORS
SCANNING ELECTRON MICROSCOPY
SCATTERING
STORAGE
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMONUCLEAR REACTORS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS
ZIRCONIUM HYDRIDES
ZIRCONIUM OXIDES
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The oxidation kinetics of zirconium-hydride powders were studied in the temperature range of 298-1378degreesK 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 (238.3kJ/mol) coincides with the activation energy of oxygen self-diffusion in monocline ZrO2.
ISSN:0030-770X
1573-4889
DOI:10.1007/BF00665046