METHOD OF PRODUCTION OF MULTI-LAYER GRADIENT COATING BY METHOD OF MAGNETRON DEPOSITION Russian patent published in 2015 - IPC C23C14/35 C23C14/06 

FIELD: metallurgy.

SUBSTANCE: invention relates to method of application of the gradient coatings by the magnetron deposition, in particular to application of coatings based on high-melting metals, and can be used to produce coatings with high adhesive and cohesive properties, as well as with optimal combination of strength and plasticity. On pre-cleaned surface of the metal backing the adhesive alloy of high-melting metals is applied in inert gas, and layer of nitrides of high-melting metals in gas mixture of inert and reacting gases. Content of nitrides of high-melting metals varies from 0% to 100%, holding is performed until achievement of the required thickness of the nitride layer, then it is reduced in reverse order, held until achievement of the required layer thickness of high-melting metals, and re-increased in direction to thickness of the deposited layer. For content increasing and decreasing of the nitrides of high-melting metals the reacting gas pressure is varied as per linear law from 0 to 8×10^-2 Pa, and then in reverse order.

EFFECT: method produces materials with high strength characteristics and optimal combination of hardness (H>40 GPa) and plasticity (W_e > 70%).

2 cl, 1 dwg, 2 ex