This study shows that the quality of detonation sprayed coatings can be improved by adding propane or butane to the high-energy acetylene fuel. WC-Co coatings sprayed with binary fuel were found to have very low porosity (< 0.5%), low abrasion wear rates (< 1 mm3/1000 rev), high hardness (~1500Hv300g), and good bonding strength (150 MPa). These values were achieved over a range of stand-off distances (150-350 mm) and at a substrate inclination of up to 30°.

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