Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-503 - C7-507
DOI http://dx.doi.org/10.1051/jp4:1993781
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-503-C7-507

DOI: 10.1051/jp4:1993781

Oxidation processes in zircaloy

D. PÊCHEUR, E. LEFEBVRE and C. LEMAIGNAN

CEA/CEN Grenoble, DTP/SECC, 85X, 38041 Grenoble cedex, France


Abstract
A study by transmission electron microscopy has been made of the incorporation and oxidation of intermetallic precipitates Zr(Cr,Fe)2 into the uniform oxide layer of Zircaloy-4. The main results are : • most of the precipitates are incorporated unoxidized into the oxide layer and are later oxidized. • iron concentration evolves significantly during oxidation, especially before the transition, segregating to the precipitate-matrix interface, occasionally as metallic iron, before being dissolved in the matrix. The behavior of the precipitates during oxidation is discussed in the light of previous work and possible consequences to the oxidation process are considered.



© EDP Sciences 1993