In-situ study of high temperature corrosion kinetics of iron using a fast X-ray diffraction method

M. Juez-Lorenzo; V. Kolarik; N. Eisenreich; W. Engel; A.J. Criado

doi:doi:10.1051/jp4:1993949

Proceedings of the 3rd International Symposium on High Temperature Corrosion and Protection of Materials
Actes du 3ème Colloque International sur la Corrosion et la Protection des Matériaux à Haute Température

J. Phys. IV France 03 (1993) C9-461-C9-467
DOI: 10.1051/jp4:1993949

In-situ study of high temperature corrosion kinetics of iron using a fast X-ray diffraction method

M. Juez-Lorenzo¹, V. Kolarik¹, N. Eisenreich¹, W. Engel¹ and A.J. Criado²

¹ Fraunhofer-Institut für Chemische Technologie ICT, Joseph-von-Fraunhofer Straβe, 7507 Pfinztal 1, Germany
² Departamento de Ciencia de los Materiales e Ingenieria Metalurgica, Fac. Quimicas,Universidad Complutense de Madrid, Spain

Abstract
Temperature and time resolved X-ray diffraction was applied to studies of the high temperature oxidation of iron in air in isothermal measurements between 700 and 920 °C. With the measured series of diffraction patterns the formation of the oxide layers can be followed in situ. The observed diffraction peaks allow the identification of the oxides. The difference method together with microscopic determination of the end thickness of the oxide layer yields the kinetic parameters for the whole oxide layer as well as for the single oxides.