Film creation of fracture surfaces of high-strength chromium-manganese steels in chloride mediums

摘要

The effect of the formic-acid addition into thechrome-acid electrolyte, deposition and annealing regimes onstrength and corrosion properties of amorphous chromium-basedcoatings are investigated. It is shown that the annealingtemperature increased up to 600 K raises the microhardness up to1500-2000 kg/mm~2. The further increase of heat-treatmenttemperature up to 1100 K reduces the micro-hardness of coatingsup to 600 kg/mm~2. It is shown that the corrosion stability ofamorphous coatings exceeds corrosion stability of pure chromiummore than in 30 times.