There is significant material loss due to abrasion wear in steel components of the power plant and petroleum industry such as in pipelines, ducts, pumps, bends, etc. Many investigators have shown that protective coatings deposited on these surfaces by thermal spray methods are successful in controlling the wear and enhancing the service life of the components. In the present study, the Nickle-Alumina (Ni-Al2O3) cermet coating was deposited on SS 316 steel grade by the High-Velocity Oxy-Fuel (HVOF) technique of thermal spray. The SS 316 steel is commonly used in boilers, ducts, and other structures of the power plant industry. The mechanical and microstructural characterization was done by FE-SEM/EDAX and XRD techniques. The wear behaviour of coatings was analyzed during testing on a pin-on-disc tribometer with the increasing normal loads and change in the coefficient of friction. The results indicated that the wear rate of coatings decreased with the increase in normal load.

Topics
Power plants, Petroleum, Friction, Tribology, Oxides, Corrosion, Industry
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