Densification of ceramics containing entrapped gases during pressure sintering

Abstract

The effect of external pressure on the final densification of ceramics containing entrapped insoluble gases has been calculated. The increase of attainable density is considerable even for medium-pressure sintering of the order of 10-100 atm. High external pressure has its justification in faster densification. The effect of pore coalescence due to grain growth on the attainable density is also assessed. © 1990.