FIELD: metallurgy.
SUBSTANCE: in chamber it is created depression with residual pressure not higher than 5·10-4 mm of mercury. Then chamber is filled by oxygen, heated in it product in the range of temperatures 200-600°C and it is formed on its surface anticorrosive coat in the form of chemical compound of gas and zirconium. Then it is implemented cooling in chamber in the medium of oxygen up to temperature 100°C and lower. In particular cases of invention implementation filling of chamber by gas is implemented up to pressure not less than 0.05 atm, product is isolated at heating temperature not less than during 10 minutes, heating of product is implemented stepwise, persistence time at temperature, corresponding each stage, is not less than 3 minutes.
EFFECT: there is obtained protective anticorrosive coat.
5 cl, 1 ex
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