A.S. Matveyev

Development of materials and the creation of composite materials requires the researcher the information in the form of mathematical properties of the material dependence on the composition and conditions of its receipt. To investigate the tungsten powder was taken c content W - 99,98 %. The particle size of 3 ÷ 6 mm. Powders of tungsten oxide and a given mass quantities were mixed on the existing production technology. The plasticizer was introduced into the cooked mixture in an amount of 2 ÷ 5 wt % by weight of the mixture. The mixture was dried in air at room temperature and rubbed over the net for granulation. The mixture was prepared as spray-drying. It is possible to obtain granules, not larger than 0.1 mm and a form - close to spherical. The study of the effect of composition on the properties of the composite material was performed by experimental design. For the construction of dependences was used simplex - a grid plan Scheffe fourth degree. For an objective choice of electrode material was used the method of calculation of the generalized optimization parameter to the function of Harrington. To construct the values of Harrington were selected thermophysical properties of the sintered material and the cost of activating additives: - the erosion rate (mean) g / flash; - relative density after sintering, %; - effective cross-section of the electrode (θ), %; - the cost of emission additives, U.S. $ / gram. Erosion rate and relative density are interconnected and complex dependence depend on the mode of the electrode. Not always decrease first due to the increase of relative density.