METHOD FOR PRODUCING A metal porous cathode made of tungsten powder

摘要

method u0438u0437u0433u043eu0442u043eu0432u043bu0435u043du0438u00a0 u043cu0435u0442u0430u043bu043bu043eu043fu043eu0440u0438u0441u0442u044bu0445 u043au0430u0442u043eu0434u043eu0432 of u0432u043eu043bu044cu0444u0440u0430u043cu043eu0432u043eu0433u043e powder, including the annealing source powder within a temperature range from 1650 to 1750u0441 with u043fu043eu0434u044au0451 iom temperature to 25 between, u0440u0430u0437u043cu0430u043bu044bu0432u0430u043du0438u0435 speca, quality control of powder by u0438u0437u0433u043eu0442u043eu0432u043bu0435u043du0438u00a0 test pills, u0441u043fu0440u0435u0441u0441u043eu0432u0430u043du043du043eu0439 in u043fu043eu0441u0442u043eu00a0u043du043du043eu043c pressure oreand the definition of u0434u0430u0432u043bu0435u043du0438u00a0 r u043fu0440u043eu0442u0435u043au0430u043du0438u00a0 air through a pill after each step of annealing, but at least two steps annealing to u043fu043eu043bu0443u0447u0435u043du0438u00a0 values r, equipped the average diameter of particles u0442u0432u0443u044eu0449u0438u0445 powder more than 4.5 microns, e.g., rud = 2.8 m / cm2 and a u0437u043du0430u0447u0435u043du0438u00a0u0445 r after the second stage annealing 0.45 kg / cm2, the values u00a0u0432u043bu00a0u044eu0449u0438u0445u0441u00a0 her op. u044bu0442u043eu0433u043e u043fu043eu0440u043eu0432u043eu0433u043e channel in units of u0434u0430u0432u043bu0435u043du0438u00a0 u043fu0440u043eu0442u0435u043au0430u043du0438u00a0 airextrusion of the obtained powder, pills, sintering them in u0431u0435u0437u043eu043au0438u0441u043bu0438u0442u0435u043bu044cu043du043eu0439 environment and u043fu0440u043eu043fu0438u0442u043au0443 sintered pellets u044du043cu0438u0441u0441u0438u043eu043du043du043e - active substance, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 order what u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 value u043fu043eu0440u043eu0432u043eu0433u043e canal to u0441u043fu0435u043au0430u043du0438u00a0 u0434u043bu00a0 another u0437u043du0430u0447u0435u043du0438u00a0 u0434u0430u0432u043bu0435u043du0438u00a0 u043fu0440u0435u0441u0441u043eu0432u0430u043du0438u00a0 test pills, u0441u0442u0440u043eu00a0u0442 u0433u0440u0430u0434u0438u0440u043eu0432u043eu0447u043du0443u044e u043fu0440u00a0u043cu0443u044e r = f (ores)u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 difference values u043fu043eu0440u043eu0432u043eu0433u043e channel in u0441u043fu0435u0447u0451u043du043du043eu043c and source u0441u043eu0441u0442u043eu00a0u043du0438u0438 for reference according to the difference of temperature u0441u043fu0435u043au0430u043du0438u00a0 = f (stp.), taking into account u0433u0440u0430u0434u0438u0440u043eu0432u043eu0447u043du043eu0439 u043fu0440u00a0u043cu043eu0439 reference dependence in pressure u043fu0440u0435u0441u0441u043eu0432u0430u043du0438u00a0 u0434u043bu00a0 u043fu043eu043bu0443u0447u0435u043du0438u00a0 necessary size u043fu043eu0440u043eu0432u043eu0433u043e canal in sintered tablets in terms of u0434u0430u0432u043bu0435u043du0438u00a0 u043fu0440u043eu0442u0435u043au0430u043du0438u00a0 air interval (u0440u0441u043fu0435u0447 min u0440u0441u043fu0435u0447 max) u0437u043du0430u0447u0435u043du0438u00a0u043c its values in the u043du0435u0441u043fu0435u0447u0435u043du043du043eu0439 pill in the interval (u0440u0441u043fu0435u0447 min) - (u0440u0441u043fu0435u0447 max ) kg / cm2where is the difference values u043fu043eu0440u043eu0432u043eu0433u043e channel in u0441u043fu0435u0447u0435u043du043du043eu043c and source u0441u043eu0441u0442u043eu00a0u043du0438u0438 of reference dependence; and u0440u0441u043fu0435u0447 - the open u043fu043eu0440u043eu0432u043eu0433u043e channel optimal values s u0434u043bu00a0 the production.