engleski

The Process of Improving Corrosion Stability of Phosphate Coating with Higher Layer Weight on the Surface of Iron and Steel

The goal of the paper is to ensure, by adding some specific organic matters into the basic phosphate bath, which is used for tube preparation before the cold deformation of metal, change of its features as for creating an increased-weight coating. As the matter of fact, an essential improvement of corrosion stability of coating is achieved by providing a phosphate coating of increased weight. For example, the required weight for hydraulic tubes is > 15 g/m2. An essential increase of mass is registred in coating prepared in phosphate bath with addition of organic acid.

cold deformation; metal; corrosion stability; phosphate coating

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