Method of making a long life high current density cathode from tungsten and iridium powders using a low melting point impregnant
摘要
A long life high current density cathode is made from a mixture of tungsten and iridium powders by processing the mixture of powders with an activator into a porous billet, and then impregnating the billet with a low melting point impregnant by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts.
申请公布号
US4863410(A)
申请公布日期
1989.09.05
申请号
US19880224980
申请日期
1988.07.21
申请人
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY
发明人
BRANOVICH, LOUIS E.;SMITH, BERNARD;FREEMAN, GERARD L.;ECKART, DONALD W.