METHOD FOR MICROPLASMA SPRAYING OF WEAR-RESISTANT COATINGS BASED ON CLAD POWDERS OF Ti/TiB SYSTEM Russian patent published in 2024 - IPC C23C4/10 C23C4/134 C23C24/08 B22F1/16 B22F9/04 

FIELD: coatings.

SUBSTANCE: method for producing a wear-resistant coating based on titanium-clad titanium diboride powder using microplasma spraying. The surface of the substrate is cleaned by shot blasting, the surface of the substrate is degreased with alcohol, a dispersed powder mixture is formed by introducing fine titanium diboride powder of a fraction of 0.5-4 microns in a mass ratio of 49-51% to titanium powder of a fraction of 10 to 40 microns. Iodine transport synthesis is carried out from the formed dispersed powder mixture to obtain titanium diboride powder clad with titanium. The resulting titanium-clad titanium diboride powder is introduced into the plasma jet and the specified powder is sprayed at a voltage of 30 to 38 V, a current of 32 to 40 A, and a transport gas flow rate of 1.8-2.2 l/min.

EFFECT: spraying of a coating with a thickness of more than 60 microns, with a hardness of up to 1200 HV, porosity of up to 14.1% and weight wear 1.4 times lower than the weight wear of a steel sample.

2 cl, 2 dwg, 2 ex