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Title

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

AuthorsJendrzejewski, R; Sliwinski, G.; Conde, A. ; Navas, C.; Damborenea, Juan de
KeywordsResistance
Metals
Chromium
Chemicals
Cladding
Lasers
Optical coatings
Coating
Corrosion
Issue Date2004
PublisherThe International Society for Optics and Photonics
CitationProceedings of SPIE - The International Society for Optical Engineering 5449: 443- 448 (2004)
AbstractThe 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.
URIhttp://hdl.handle.net/10261/88323
DOI10.1117/12.563217
Identifiersdoi: 10.1117/12.563217
issn: 0277-786X
Appears in Collections:(CENIM) Artículos
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