EN
On the basis o f comparative studies carried out by the authors o f the present article on a corrosive resistance of oxide and sulfide conversive coatings formed on copper it has been found out that irrespective o f the accelerated method o f examining the corrosive resistance of the coatings, oxide coats are more resistant to corrosion than sulfide ones. This high resistance should be ascribed to a high density of sulfide coatings. In the author’s view this may be related to the fact that the ratio o f the molar volume of cuprous and cupric oxide to the molar volume of mettalic copper is bigger than the unit but it does not exceed two.