Surface coating and surface coating wear-resistant materials increase the wear resistance. For example, Eagle innovations has developed a new metal surface coating “e” – carbon coating, which can be coated on all base metal alloys, has good corrosion resistance, can form a whole with the base without breaking or falling off, and can greatly improve the wear resistance of gears; Nano powder coating treatment on metal surfaces such as gears by nano material technology can improve the wear resistance, hardness and service life of equipment. R.C. Martins, Paulo S. Moura, J.O. seabra and other scholars in Portugal have sprayed Mo S2 / Ti on the gear surface to form a wear-resistant composite coating with low friction coefficient, which can effectively improve the wear resistance of the gear meshing surface.
For example, PVD coated CrN can improve the fatigue resistance; Boeing first adopts chromium plating on gear surface, and then adopts plasma spraying diamond-like carbon (DLC) coating. DLC coating can significantly improve wear resistance and fatigue resistance than chromium plating; For another example, nano powder coating treatment on metal surfaces such as gears using nano material technology can improve the wear resistance, hardness and service life of component surfaces; The contact fatigue life and strength of gray cast iron gears can be improved by coating Ni-P-Co alloy on the tooth surface by alloy coating.
Ni-P-Co alloy coating on the surface of gray cast iron specimens can increase the contact fatigue life by 1.011 ~ 1.414 times.