COMPOSITION FOR ALUMINA SINTERED COMPACT AND ALUMINA SINTERED COMPACT

摘要

PURPOSE:To obtain a composition for alumina sintered compact capable of burning at a relatively low temperature by mixing crude particles consisting of alpha-alumina crystal having a specific particle diameter with alumina fine particles having a specific particle diameter. CONSTITUTION:This composition for alumina sintered compact is a mixture of 20-80wt.% alumina crude particles having 1.0-5.0mum average particle diameter and 80-20wt.% alumina fine particles having <=1.2mum particle diameter and the alumina crude particles are composed of alpha-alumina crystal having <=1.2mum particle diameter.