Abstract
INCONEL® nickel-chromium alloy 625 is widely used for its high strength, excellent
corrosion resistance and creep resistance on prolonged exposure to aggressive environment.
However, despite its properties and industrial application, its wear resistance is not entirely
satisfactory. The article investigates and presents the tribological performance of Inconel 625
coating using reciprocating scratch test. High velocity oxyfuel (HVOF) method was used to
deposit Inconel 625 film onto 304 stainless steel surfaces. The frictional behavior and wear data
were studied in order to observe the effect of coating thickness on wear failure. The results
revealed that coatings of higher thickness showed lower coefficient of friction, better adhesion
and good wear resistance in comparison to the low coating thickness.