发明名称 |
Method of making a long life high current density cathode from tungsten and iridium powders using a mixture of barium peroxide and a coated emitter as the 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 porus billet, and then impregnating the billet with a mixture of barium peroxide and a coated emitter by firing the billet in a dry hydrogen furnace at a temperature at which the impregnant melts.
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申请公布号 |
US4911626(A) |
申请公布日期 |
1990.03.27 |
申请号 |
US19890439135 |
申请日期 |
1989.11.20 |
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. |
分类号 |
B22F3/26 |
主分类号 |
B22F3/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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