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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v2.i3.70
pages 381-389

INTERACTION BETWEEN MECHANICAL STRESSES AND OXIDATION OF THE NIOBIUM

C. Bouillet
Faculte des Sciences Mirande - Laboratoire de Recherches sur la Reactivite des Solides U.M.R. 5613 CNRS - Universite de Bourgogne - BP 400 - 21011 Dijon Cedex - France
D. Ciosmak
Faculte des Sciences Mirande - Laboratoire de Recherches sur la Reactivite des Solides U.M.R. 5613 CNRS - Universite de Bourgogne - BP 400 - 21011 Dijon Cedex - France
M. Lallemant
Faculte des Sciences Mirande - Laboratoire de Recherches sur la Reactivite des Solides U.M.R. 5613 CNRS - Universite de Bourgogne - BP 400 - 21011 Dijon Cedex - France

RÉSUMÉ

The oxidation of niobium at 700°C and at air pressures from 30 to 1000 hPa leads to the formation of a stratified oxide scale. Analyses of the evolutions of the phases, the crystalline textures and mechanical stresses during oxidation are determined by X-ray diffraction techniques. Interactions of chemical and mechanical processes constitute the driving force of the reaction and can explain the stratified morphology of niobium oxide.