FIELD: corrosion protection. SUBSTANCE: corrosion protection method involving insulation coating and cathode polarization consists in that, under dielectric insulation coating, metal coating layer is inserted, its potential in given place being more negative than that of construction to be protected. As metal coating, aluminum alloy is proposed. Cathode polarization is developed by the current with density 5-15 mA/sq.m instead of commonly utilized 100-200 mA/sq.m. EFFECT: increased reliability of protection. 3 cl, 1 dwg
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