Abstract

The paper discusses the features of the structure formation of electrochemical chrome coatings on the introduction into the electrolyte composition of a disperse phase in the form of nanosized carbon additives (ultradispersed diamonds of denotation synthesis and diamond-graphite charge). It is shown that nanosized carbon additives encourage the formation of more dense coatings having fine-crystalline structure. Chrome coatings with additives of nanosized components have higher tribological characteristics compared to those obtained from standard chroming electrolytes. Modification of the chrome coating decreases its coefficient of friction by 1.4–4.6 times and its wear rate by 8–12 times in unlubricated testing. Under boundary lubrication the coefficient of friction of the chrome-nanodiamond coating is 25–30% lower than that of the chrome coating and the wear rate decreases by 2.9 times.

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