Влияние AL2O3 и ZrO2 на некоторые свойства композиций на основе нитрида кремния и фосфатных связующих

摘要

It is found that AL2O3 and ZrO2 stabilized with CaO(no more than 30%)increase the high-temperature strength ofthe materials based of Si3N4and phosphate binders, wettability with aluminum melt, heat-resistance, and electrophysical properties remaining the same. Theupper limit of composite operation in airalso increases from 1170 to 1520 K which results from reduction ofoxidability upon heating in air.