FIELD: metallurgy.
SUBSTANCE: invention relates to the field of powder metallurgy, in particular to heat-protective coatings to protect the surface of parts exposed to high-temperature gas streams and made, among other things, from two-layer brazed structures and can be used to protect rocket and aircraft equipment. Said heat-protective coating consists of a metal underlayer with a working layer deposited on it containing a layer of zirconium oxide stabilized by yttric oxide. Above working layer contains a layer of yttric oxide stabilized with a layer of hafnium oxide stabilized with zirconium oxide, while the sublayer and layers of zirconium oxide and hafnium oxide are nanostructured. In one particular case of the invention, the sublayer is made of nickel or nickel alloy.
EFFECT: creation of a heat-shielding coating is ensured, which ensures effective protection of parts, including those made from two-layer brazed structures, from the effects of high-temperature gas flow.
1 cl, 1 dwg
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