Artuh Y. Development of materials for electrical contacts on the basis of the alloy Al, Cr, Sn copper and molybdenum, received by the method of electron-beam evaporation-condensation

Thesis deals with the scientific and technical task of developing new condensed from the vapor phase Cabinet for electrical contacts on the basis of additionally alloyed with aluminum, tin, copper chromium and molybdenum to improve corrosion resistance. The technology of the Cabinet of materials by electron beam evaporation-condensation. The structure, physicochemical and mechanical properties of the matrix copper-based alloys and choose the optimal composition of the matrix. The structure and corrosion resistance of the CM series of MDK in distilled water and showed that with increasing concentration of molybdenum corrosion resistance of the condensates decreases. Carried out by gravimetric studies, calculated the weight and depth of corrosion rates of new KM (Cu-0 ,05-0, 1% Zr-0 ,05-0, 1% Y-6% AI)-Mo; (Cu-0 ,05-0 , 1% Zr-0 ,05-0, 1% Y-0, 34% Cr)-Mo; (Cu-0 ,05-0, 1% Zr-0 ,05-0, 1% Y-3, 76 % Sn)-Mo and it is shown that the greatest corrosion resistance has the system (Cu-Y, Zr, 0,34% Cr)-Mo (MPC-3X), the ball its corrosion resistance is 2. The areas of application of KM MPC-3X in the switching devices of Smoline and Ingul'sk mines uranium mining in the atmosphere which increased content of SO2 and CO2 with humidity around 80%. Key words: composite materials, corrosion resistance, electron-beam technology, structure, electrical contacts.