High Velocity Suspension Flame Spraying (HVSFS): Process Development and Industrial Applications

This paper provides an overview of the high velocity suspension flame spraying (HVSFS) process that covers spray gun design, suspension and substrate preparation, and process optimization. Examples are given showing how the process is used to produce tribofunctional coatings for engine applications, electrolyte layers for SOFCs, and netshape chromia for high-end scissor blades. The substrates in the three examples are AlSi₉Cu₃, Crofer nickel cermet, and low carbon steel.