L.N. Korol, A.P. Korzhavyi, V.P. Marin, A.V. Vlasko, A.A. Tseluev, N.V. Jarantsev, V.V. Chelenko

Now among superhigh-frequency vacuum devices ionic centrifuges without heat with autoemissive starting up are especially claimed. In them as an electronogen apply secondary - emissive cathodes. Among last development the floatable palladium - baric are most effective (98%Pd+2%Ba) cathodes. Their application has allowed more than in 10 times to increase durability of ionic centrifuges without heat in comparison with analogs, where are applied imbued low-temperature (operating temperature below 500 °С) secondary - emissive cathodes. The lowest yield suitable at reception ready Pd-Ba-products from bullions of alloys of metals the arc swimming trunks does not allow to organize their serial production. The parent to that is presence in structure Pd-Ba-slitka of friable intermetallic compounds of barium. Authors of the given work offer technology of reception of finely divided powders stable intermetallid Pd5Ba high-purity which allows to apply them as emissive-active materials in composition cathodes of system palladium - intermetallid Pd5Ba with even on a surface and volume allocation of barium. With application of the modern analytical research techniques and at testing new composition cathodes 98%Pd+2%Ba (weights). Their high performance is shown in comparison with known analogs. In work concrete technological modes of reception highly clear finely divided powders intermetallid Pd5Ba are described.