Influence of the composition of the metal-ceramic coating on wear resistance

Abstract

Abstract The work is devoted to the development of a wear-resistant coating, combining the hardly compatible properties of high hardness and plasticity. The proposed composite coating has a nickel-chrome corrosion-resistant matrix, providing high plasticity, and hardening phase Al2O3, which can significantly increase the hardness of the coating and wear resistance. The use of laser radiation to melt the coating allows to crush Al2O3 grain to 0.05 … 1.0 MкM, which significantly increases the operational properties of the coating under the influence of variable loads on the friction assembly. Investigations of the frictional properties of wear-resistant coatings PG-10N-01 + 15% A1203 weld by a laser showed that when lubricated with hydraulic fluid AMg-10, the friction coefficient paired with Br.AJN 10-4-4 at a load of 5 … 40 MPa and a sliding speed of 0.05 m / s is less than with solid electrolytic chromium. Wear rate Br. AZH 10-4-4 at a load of 10 MPa and a sliding speed of 0.25 and 1.0 m / s in friction pair with coating PG-10H-01+15%A12O3 is 14 … 20 times less than in a pair with solid electrolytic chrome coated respectively. The wear-resistant coating PG-10N-01 + 15% A12O3, weld by laser, can be an alternative to replace hard electrolytic chrome plating. The developed technology for producing wear-resistant ceramic-metal coatings with an ultrafine hardening phase can be applied to create friction pairs of heavily loaded tribocouplings assemblies. A post-publication change was made to this article on 11 Jun 2020 to correct the pdf so that it matched the webpage.