The study of the characteristics of pressing and vacuum sintering of the powder mixture of iron―silicon

Abstract

The compaction in a detachable mold of a model powder mixture of composition (% (mass.)) 95Fe―5Si was investigated. It was established that adding zinc stearate to the mixture eliminates the destruction of cylindrical briquettes due to non-pressing. Suppression of annealed briquettes increases their density slightly. Vacuum sintering of briquettes increases their density from ~6,3 to ~7,3 g / cm³. The magnetic characteristics of sintered briquettes are investigated depending on the technology of their production. The proposed sintering mechanism is described and an improved technology for producing dense Fe―Si powder products is proposed.