Use of Powders of the Tungsten-Rhenium Alloys for the Preparation of Impregnated Cathode Skeletons. I. Densification and Formation of Porous Structure in Sintering of Powders of Tungsten-Rhenium Alloys

摘要

The effect of phase composition, fineness, andmorphology of W-Re powders with different rhenium content oncompaction and formation of porous structure has been studied.Fine particle powders with a specific surface of 5-8 m2/g,mechanical mixtures of tungsten and rhenium powders, and W-Re alloy powders were used. Local nonuniform compaction isobserved during sintering of powder mixtures and alloy powders.It was established that alloy powders and intermetallic powdershave lower sintering activity.