Abstract
High velocity oxyfuel (HVOF) coating is extensively used in power industry to improve the corrosion and wear resistance of metallic surfaces. In the present study, HVOF coating of Inconel 625 onto stainless steel and mild steel surfaces is considered. The static electrochemical tests are carried out for different durations. Tensile bonding strength of the coatings before and after the electrochemical tests is measured. Optical microscopy and SEM are carried out to investigate the microstructure of the coating before and after the chemical tests. It is found that the coat has a noticeably layered structure with the layers parallel to the substrate’s surface and segregated by a slightly darker contrast phase presumed to be oxide. The tensile bonding strength of the coating reduces considerably after 3 weeks testing in the aqueous corrosion medium.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
