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) C7-991 - C7-994
DOI http://dx.doi.org/10.1051/jp4:19937153
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) C7-991-C7-994

DOI: 10.1051/jp4:19937153

Microstructural and electrochemical characterization of laser deposited 18-10 austenitic stainless steel clad layers

F. FOUQUET1, P. SALLAMAND1, J.P. MILLET2, A. FRENK3 and J.D. WAGNIERE3

1  GEMPPM/CALFETMAT, INSA bât. 502, 69621 Villeurbanne cedex, France
2  Physicochimie Industrielle, INSA bât. 401, 69621 Villeurbanne cedex, France
3  Centre de Traitement des Matériaux par Laser (CTML), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland


Abstract
The present work reports on 18-10 stainless steel coatings produced by laser powder cladding technique on a mild steel. Uniform clad layers - about 600 µm thick - have been produced through partially overlapping single cladding tracks. The clad layers thus obtained show excellent adherence, no cracks, few porosities and good chemical homogeneity. The microstructure is dendritic or cellular. Dentrites or cells have an austenitic structure and a small amount of δ-ferrite is detected in the interdendritic areas. The corrosion resistance of the clad layers is tested by electrochemical techniques in various neutral or acidified aqueous saline media, deaerated or naturally aerated. In every case, the coatings show an excellent uniform corrosion resistance.



© EDP Sciences 1993