Research on Abrasive Wear Properties of Bionic Non-smooth Coating by Laser Cladding

On the basis of the morphology of organism's surface,bionic non-smooth coatings of wave and plane-type on 45steel were prepared by laser cladding.The abrasive wear test was carried out with abrasion tester,and the wear scar was observed.The wear mechanism was analyzed.The results show that the wear resistance of plane type coating is remarkably better than that of the wave type.The criterion for designing and preparing agood wear-resistant coating is:geometric hardening rate(GHR)was no less than 50%.The wear mechanism of wave-type coating is that the hardening belt's non-smooth surface and the impact of the grinding head function together.The wear mechanism of flat-type coating is the combination of the wear mechanisms of the hardening belt's non-smooth surface and its non-smooth geometric surface morphology.