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1992
Conference Paper
Titel
Laser cladding with a heterogeneous powder mixture of WC/Co and NiCrBSi
Abstract
Many applications in machine building require surface layers whose wear properties are comparable with those of sintered hard metal. One way to solve this problem is the laser cladding with a composite powder mixture consisting of carbide particles and a ductile metal alloy as binder. In the present work a powder mixture of 60 wt% WC/Co and 40 wt% NiCrBSi is cladded onto a low carbon steel. A detailed parameter optimization is described to get a reproducible composite coating free of cracks and with low iron dissolution. Layer properties as track shape, microstructure and hardness are characterised.