Effects of laser treating on surface morphology of MAO coating on AZ91 magnesium alloy

Abstract

Abstract. Micro arc oxidation (MAO) coating was first fabricated on AZ91 biomedical magnesium alloy and followed by surface laser treating. Effects of laser treating on surface characteristics of MAO coating were studied. The results indicated that after surface laser treating, the micro pores on MAO coating surface became fewer and smaller. The whole surface became more unique and compact. The surface quality of MAO coating was improved.