Experimental investigations of the laser cladding of protective coatings on preheated base material

Rafal Jendrzejewski; Gerard Sliwinski; Ana Conde; Carmen Navas; Juan J. de Damborenea

doi:10.1117/12.563217

21 June 2004 Experimental investigations of the laser cladding of protective coatings on preheated base material

Rafal Jendrzejewski, Gerard Sliwinski, Ana Conde, Carmen Navas, Juan J. de Damborenea

Proceedings Volume 5449, Eighth International Conference on Laser and Laser Information Technologies; (2004) https://doi.org/10.1117/12.563217
Event: Eighth International Conference on Laser and Laser Information Technologies, 2003, Smolyan, Bulgaria

Abstract

The laser cladding technique was applied to obtain Co-based stellite SF6 coatings on the chromium steel base. The coatings were prepared by means of a direct cladding of metal powder using a 1.2 kW cw CO₂ laser stand with a controlled preheating of the substrate material. Results of the metallographic tests revealed a fine-grained, dendritic microstructure and proper metallic bonding between substrate and coating. A nearly constant concentration of mian elements at different areas of the coating cross-section indicated on homogeneous chemical composition of the laser-cladded SF6 alloy samples. A significant decrease of the micro-crack number with increasing temperature of the base preheating was observed. This was accompanied by a drop of the wear and corrosion resistance.

Citation Download Citation

Rafal Jendrzejewski, Gerard Sliwinski, Ana Conde, Carmen Navas, and Juan J. de Damborenea "Experimental investigations of the laser cladding of protective coatings on preheated base material", Proc. SPIE 5449, Eighth International Conference on Laser and Laser Information Technologies, (21 June 2004); https://doi.org/10.1117/12.563217

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