University of Texas at El Paso

HVOF Thermal Spray Gun


High Velocity Oxy-Fuel(HVOF) thermal spraying is a technique used to apply durable coatings on structural materials for corrosive and high temperature environments.  The technique involves the use of a high temperature supersonic gas generated from oxy-fuel combustion to impinge high velocity particles onto a surface. Liquid-fueled high-velocity oxy-fuel (HVOF) thermal spraying systems are capable of generating more momentum output to powder particles in comparison with gas-fueled systems. The cSETR has developed a HVOF thermal spray gun that has been operated with gaseous methane and gaseous oxygen. Carbon steel has been used as the substrate while Inconel 718 powder and Iron Aluminide powder have been used as the coating particles.

Specifications and performance

Development Status

TRL 3-5


1. Mohamed,D. Cabrera, L., Love, N. and Choudhuri, A., High Velocity Oxy-Fuel ThermalSpray Gun Design, AIAA Baltimore, January 2014

2. Mohamed,D., Cabrera, L., Love, N., and Choudhuri, A., Characterization of Gas Flows inHigh Velocity Oxy-Fuel Thermal Sprays, AIAA Cleveland, July 2014

3.Mohamed,D., Cabrera, L., Love, N., Choudhuri, A., High Velocity Oxy-Fuel Thermal Spray Gun Design,52nd Aerospace Sciences Meeting, 2014, National Harbor, MD, USA.