Oxidation resistance of plasma coated and laser treated mild steel

A.S. Khanna; R.K. Singh Raman; E.W. Kreutz

doi:doi:10.1051/jp4:1993967

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) C9-635-C9-642
DOI: 10.1051/jp4:1993967

Oxidation resistance of plasma coated and laser treated mild steel

A.S. Khanna¹, R.K. Singh Raman² and E.W. Kreutz³

¹ Corrosion Science & Engineering Department, Indian Institute of Technology, Bombay - 400 076, India
² Indira Gandhi Centre for Atomic Research, Kalpakkam, India
³ Fraunhofer Institute for Lasertechnik, Aachen, Germany

Abstract
Stainless steel powder was coated on mild steel substrate using plasma coating. The porous coating thus obtained was modified using laser irradiation. The oxidation behaviour of the plasma coated as well as laser treated material was studied in air at 1073 K. There was considerable decrease in oxidation rate of mild steel after plasma coating as expected. In addition the oxidation resistance improved significantly after laser treatment. Various laser parameters influence the coating characteristics. Their effect on coating composition and on oxidation rate is discussed.