Spraying the Current Conducting Coatings on Electrotechnical Unit by the CGS Method

This paper considers the problem of spraying the electrically conductive coatings on electrotechnical units for different purposes with the method of cold gas-dynamic spraying. It presents a general scheme of the spraying system, the characteristics of the spraying process and the main results of the property tests of electrotechnical units with coatings. The contact connections of copper bars provided with aluminum caps with protective coatings of copper, zinc, and nickel are tested. The paper demonstrates the conformity of the electrotechnical units injected using the CGS method with the requirements of the state standard. It was observed that while spraying the thin copper layer on aluminum caps by the CGS method the copper expenditurer 50 times decreases. The technical characteristics, with this, are close to the copper caps, and the cost is close to the aluminum caps. Paper includes a German-language abstract.