Abstract
Flame spray technology is basic member of the thermal spray coating family. Higher cost-effective coatings can be produced at higher speeds with new flame spray equipments which developed in recent years. The Flexicord flame spray method developed in this direction offers many advantages. A wide variety of ceramic coatings can be deposited on metallic surfaces with this spray methods in the face of wear-induced problems. In this study, solid particle erosion rates and wear behaviors of different oxide (Al2O3, MgO-Zr2O3, Al2O3-MgO based coatings have been studied comparatively with respect to ASTM G76 standard. Spinel based coatings between the oxide based coatings exhibited superior wear resistance and significantly lower mass loss than the others. Due to the fragile nature of the ceramic coatings, the erosive wear rate is increased by crack growth formation related with the porosity of coating. Due to the accelerated solid particle impacting at high impact angles, wear rate is highest.
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