We study the corrosion behaviors of electrolytic composite coatings based on ternary cobalt alloys under different conditions and analyze the distribution of metals over the thickness of the coating and the parameters of their surface roughness. The accumulated results show that, in alkaline and neutral media, the corrosion potentials shift in the negative direction as compared with the potentials measured in an acid media but corrosion resistance does not undergo any significant changes. This can be explained by the fact that tungsten and molybdenum oxides formed on the surface are unstable in alkaline media. In view of the fact that in neutral solutions, the subsurface layer becomes alkaline due to the reduction of oxygen and chlorides provoke local fractures of the protective film, we can assert that alloying metals exert a synergistic effect on the rate of corrosion of the composites. According to the computed values of the depth indicator of corrosion rate, the analyzed coatings can be referred to the group of highly resistant, whereas the composites based on Co₆₄Mo₃₃Zr₃ alloy in neutral and alkaline media belong to the group of very stable materials. This opens wide possibilities for their application as protective coatings on metals in aggressive media.

我们研究了基于三元钴合金的电解复合涂层在不同条件下的腐蚀行为，并分析了金属在涂层厚度上的分布及其表面粗糙度参数。累积结果表明，在碱性和中性介质中，与在酸性介质中测量的电位相比，腐蚀电位向负方向移动，但耐腐蚀性没有发生任何显着变化。这可以通过表面形成的钨和钼氧化物在碱性介质中不稳定的事实来解释。鉴于在中性溶液中，由于氧和氯化物的还原，亚表层变为碱性，引起保护膜的局部破裂，我们可以断言合金金属对复合材料的腐蚀速率产生协同作用。根据腐蚀速率深度指标的计算值，分析的涂层可以称为高抗性组，而基于Co的复合材料₆₄ Mo ₃₃ Zr ₃合金在中性和碱性介质中属于非常稳定的材料组。这为它们在腐蚀性介质中作为金属的保护涂层的应用开辟了广泛的可能性。