PROTECTIVE COATING INSIDE REACTOR ELEMENTS AGAINST DESTRUCTION Russian patent published in 2011 - IPC G21C3/00 

FIELD: power industry.

SUBSTANCE: there applied is the coating consisting of the interlayer of the material which is less solid than the main protective layer of the coating and less solid than the oxide of structural material, and at least one protective layer from the material. Protective layer has micro-hardness exceeding micro-hardness of structural materials and lying in the range of micro-hardness from the value of structural material and higher. At that, protective coating layer can be made in the form of multiple-layer structure, which provides combination of hardness and strength of the coating. Also, protective coating layer can be made in the form of multiple-layer structure, and not less than one of the layers of which has micro-hardness which is higher than the structural material, but which is less than the oxide, which provides lower intensity in the coating and better adhesion at thermal cycles. Metals and their compounds on the basis of Al, Ti, Zr, Cr, Cu, Nb, Mo, W, C, N, O, B can be used as the coating materials separately or in various combinations.

EFFECT: improving strength and plasticity of protective coating in conditions of thermal cyclic and vibration loads of the reactor.

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