Published August 1992 | Version v1
Journal article Metadata-only

High-temperature oxidation of zirconium-hydride powders

Creators

  • 1. Kiev Polytechnical Inst. (Ukraine)
  • 2. Inst. for Materials Science Problems, Kiev (Ukraine)

Description

The oxidation kinetics of zirconium-hydride powders were studied in the temperature range of 298-1,378 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

Additional details

Publishing Information

Journal Title
Oxidation of Metals
Journal Volume
38
Journal Issue
1-2
Journal Page Range
p. 89-98.
ISSN
0030-770X
CODEN
OXMEAF

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
24029362
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ACTIVATION ENERGY; CALORIMETRY; CHEMICAL REACTION KINETICS; DIFFERENTIAL THERMAL ANALYSIS; DIFFUSION; EXPERIMENTAL DATA; FUEL ELEMENTS; HYDROGEN STORAGE; MATHEMATICAL MODELS; OXIDATION; OXYGEN; PERMEABILITY; POWDERS; REACTORS; SCANNING ELECTRON MICROSCOPY; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; THERMAL GRAVIMETRIC ANALYSIS; THERMONUCLEAR REACTORS; X-RAY DIFFRACTION; ZIRCONIUM HYDRIDES; ZIRCONIUM OXIDES
Descriptors DEC
CHALCOGENIDES; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; COHERENT SCATTERING; DATA; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; ENERGY; GRAVIMETRIC ANALYSIS; HYDRIDES; HYDROGEN COMPOUNDS; INFORMATION; KINETICS; MICROSCOPY; NONMETALS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; REACTION KINETICS; REACTOR COMPONENTS; SCATTERING; STORAGE; TEMPERATURE RANGE; THERMAL ANALYSIS; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS