Comparative Study of the Erosive Wear of Thermally Sprayed Coatings Using Powder and Flexi-cord Feedstock Materials

Comparative study of the erosive wear of thermally sprayed coatings using powder and flexi-cord feedstock materials

Sprayed deposits using conventional wire and powder materials open a wide range of possibilities to solve wear problems in engineering equipment. The option for new different spray technologies and consumables like nano structured powder materials and nano composite cored wires have expanded the engineering possibilities. Cored wire technology allows the use of compositions that can't be drawn into wire form like carbides in metallic matrix and high-temperature materials, thus intensifying the use of low operating cost welding and spraying processes to demanding wear applications. The objective of this work was to compare the mechanical characteristics and erosive wear performance of coatings obtained by Flame Spray and High Velocity Oxygen Fuel Spray using some selected powder and flexi-cord wire materials. The wear resistance of the coatings was determinate by slurry erosion wear test.