Optimisation of HVOF Spray Process Parameters to Achieve Minimum Porosity and Maximum Hardness in WC-10Ni-5Cr Coatings

High-velocity oxy-fuel (HVOF) spray coating plays a major role in many surface treatment methods, which tend to improve erosion and corrosion resistance properties. HVOF is well known for its dense high-quality ability. This due the less in-flight exposure time, tends have oxide content because of high-velocity Among number process parameters, porosity hardness are predominant factors while considering wear rate behaviour analysis. The current study aims optimise parameters obtain low levels high values WC-10Ni-5Cr sprayed on 35 Mo Cr steel. flow rates oxygen, LPG, powder feed distance selected this as these superior influence final condition coating. Statistical tools such design experiments (DoE), analysis variants response methodology (RSM) were used achieve desired results. As per result analysis, oxygen has higher effect value microhardness