Product Code: ICAL05_1405

On the Wear Properties of Laser Coatings with High Carbide Concentrations
Authors:
Petri Vuoristo, Tampere University of Technology; Tampere Finland
Janne Nurminen, Ketek; Kokkola Finland
Jonne Ni, KETEK; Kokkola Finland
Presented at ICALEO 2005

Laser coating (laser cladding) is a novel way to produce metal matrix composite (MMC) coatings. The selection of the metallic matrix can be selected on the base of the intended application and environment, whereas the additional wear resistance improvement is provided by mixing various carbides with the metallic matrix. In the present work, various types of MMC coatings were prepared by laser coating methods. The coatings consisted of VC, WC and TiC hard phases mixed with metallic tool steel M2, Stellite 21 and NiCrBSi alloy. Different levels of carbide contents were used. The abrasion resistances of the MMC coatings were tested using a rubber wheel abrasion apparatus. The wear surfaces were examined and the microstructures of MMC coatings were analysed in order to determine microstructures, carbide dissolution and phase.