A.A. Kornyukhin

A heaters in ceramic case, which is obtained by melting of aluminium oxide, are widely used in impregnated cathode units with radiative heating due to its mechanical strength and reliability. However, this technology is ineffective in the manufacture of heaters with diameter less than 5 mm. The process of making of diminutive fused heaters for impregnated cathode units with use of capillary effects is described in this paper. The developed technology enables to expend range of application of fused heaters and to use it in diminutive impregnated cathode units, working at large mechanical loadings.