Investigation of the Microstructure and Wear Properties of Laser Clad Al-Si Coatings Containing Different Y2O3 Contents

Y2O3-reinforced Al-Si alloy coatings were prepared on the surface of a Mg by laser cladding technique. The microstructure, hardness, and wear resistance analyzed using an X-ray diffractometer, scanning electron microscope, energy spectrometer, Vickers hardness tester, friction tester. effect different additions Y2O3 microstructure properties was investigated. results indicate that addition leads to significant refinement grain size denser coatings. Coatings with high content provide superior resistance. With 7.5 wt.%, coating exhibits finest size, highest smallest volume. Excessive amounts Y2O3, however, cause reduction in coating.