Abstract
Partial dilution of clad powder and the substrate to form a new protective layer is called as cladding. The present article focuses on development of a novel surface modification technique for better resistance to wear/erosion using microwaves as the source of heat. Clads of MoCoCrSi/ WC-Co were produced on austenitic stainless steel (SS-316) using microwave irradiation techniques. Composite clads were established by irradiating microwaves at 2.45 GHz frequency and power of 900W using a domestic microwave applicator for a duration of 30 minutes. Characterization of the developed clads were performed in the form of metallographic(microstructure) and mechanical(hardness) tests. Careful observation of the microstructures revealed uniform grain structures, free from defects on the surface of the cladded substrate. Further, no significant cracks were to be found on the transverse section of the clad characterizing good bonding between clad particles and substrate. The developed clad demonstrates significantly higher hardness than the substrate.
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