Abstract
Novel AlCoCrNiMox (x = 0.1 wt%) non-equiatomic high entropy alloy (HEA) powders were synthesized by mechanical alloying. A single solid-solution was formed. X-Ray Diffraction (XRD) analysis of milled powders reveals a BCC phase after 20 h of milling. Field emission scanning electron microscopy (FESEM) with EDAX mapping confirmed the formation of a homogenous mixture. The milled alloy was coated onto a 316 steel substrate using High-velocity Oxy-fuel (HVOF) coating. The slurry erosion resistance exhibited by the coating was tested using Water-jet Erosion tester with 24 m/s to 30 m/s jet velocity at 30°, 45°, 60°, and 90° angular impingement. Spallation due to adhesion with subsequent layered lamellae fracture was observed to occur during erosion.
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