PROPERTIES OF METALLIC GLASS COATINGS ON AN ALUMINUM ALLOY SUBSTRATE PRODUCED USING A HVOF SPRAYING PROCESS

摘要

An 170μm thick, Fe-based bulk metallic glass (Fe{sub}43Cr{sub}16Mo{sub}16C{sub}15B{sub}10) coating was successfully formed on an aluminum alloy (A5052) metal substrate using an HVOF (High Velocity Oxygen Fuel) spraying process. X-ray diffraction analysis determined that the sprayed remains amorphous after spraying. The amorphous coating shows good adhesion to the metal substrate, and has a high hardness of HMV 900-1000, very low wear loss, and a comparably high friction coefficient of 0.5 to 0.6 determined using a ball-on-disc wear tester.