FIELD: electricity.
SUBSTANCE: invention relates to engineering and power supply systems, namely to methods of application of coatings from nonferrous metals at electric contacts from aluminium alloy. First, by means of high-speed powder spraying is applied first copper sublayer. Then galvanic deposition of copper with hardness of the second sublayer is applied, is the first copper sublayer. Then, the second sublayer copper by galvanic deposition of silver coating layer is applied with thickness of 10-40 mcm, with hardness lower than hardness of the second underlayer of copper.
EFFECT: higher efficiency and current-conducting properties of spray coating.
1 cl, 1 ex
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