21 June 2004 Experimental investigations of the laser cladding of protective coatings on preheated base material
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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.
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Rafal Jendrzejewski, Rafal Jendrzejewski, Gerard Sliwinski, Gerard Sliwinski, Ana Conde, Ana Conde, Carmen Navas, Carmen Navas, Juan J. de Damborenea, 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); doi: 10.1117/12.563217; https://doi.org/10.1117/12.563217
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