The influence of ageing on consolidation and sinterability of a sub-micron alumina powder

► Submicron alumina powder as material for fine-grained ceramics preparation. ►The effects of calcination and ageing on powder properties and sinterability were observed. ►The aggregates formed by calcination decrased sinterability of the powder. ►The ageing impaired sinterability due to significant water intake causing agglomeration.