Fabrication and Characterization of Ni60A Alloy Coating on Copper Pipe by Plasma Cladding with Induction Heating

Plasma cladding coupled induction heating was developed and successfully used to fabricate Ni60A coating on the surface of copper pipe. By matching swing arc with rotating pipe, efficiency as high 32.72 mm2/s. From head tail coating, wear resistance changed from 4.5 1.8 times that pure copper. During process constant current, temperature zone bath depth gradually increased. The corresponding dilution ratio increased, accompanied by widening interface transition growth precipitated phases (CrB Cr23C6). Due gradient change composition, can be regarded an in situ synthesized coating. critical point sudden 850 °C, at which mechanism abrasive adhesive wear. proper should controlled within 600–850 achieved current power. Results indicated plasma is a potentially effective method prepare high-quality large-complex-curved component.