Spray metalizing and Hard facing and coating (metals like NiCr BoSi/ Wc in NiCr BoSi matrix Stelite and other Co alloys, metal oxide viz CrO2, Al2O3 ,Al2O3+TiO2 etc and metal carbide Wc+CO WcCoNiCr3C2 Cr3C2NiCr Wc +NiCr etc). TUNGSTEN CARBIDES COATING CERAMIC COATING HVOF AND PTA PROCESS