The alloyed powders of W-Re system as skeleton materials of impregnated cathodes I. Densification and pore structure formation during the sintering of W-Re alloyed powders

摘要

The effect of particle powder morphology, phase composition and dispersivity of the W-Re powders with different rhenium content on the densification and the pore structure formation was investigated. The fine particle powders with the specificsurface about 58 m2/g, W-Re metal powder blends and W-Re alloyed powders were used. The local nonuniform densification were observed during the sintering of powder blends and alloyed powders. There was established that the alloyed powders and theintermetallic powders have lover sintering activity.