Corrosion stability of electrodeformation clad chromium coatings
The results of a comparative assessment of the corrosion resistance of coatings based on chromium, formed by the methods of galvanic deposition and electrodeformation cladding with a flexible tool (EDCFT) are presented. Compacted donor materials were obtained by sintering mixtures of powders of chromium, zinc. copper, tungsten carbide, hexagonal boron nitride, thermally expanded graphite and the diamond-graphitic charge UDAG and used to form the coatings by the EDCFT method. It is shown that the clad chromium coatings have a higher corrosion resistance compared to the uncoated sample, however, they are inferior in this indicator to chromium coatings obtained by galvanic deposition. Therefore, the use of clad chromium coatings is most appropriate for parts operating in the absence or minimal aggressive effect of salts, acids and precipitation, for example, for parts of hydraulic drives of metal-cutting machines.