Phase Evolution and Dielectric Properties of MgTiO ₃ –CaTiO ₃ ‐Based Ceramic Sintered with Lithium Borosilicate Glass for Application to Low Temperature Co‐Fired Ceramics

Abstract

Effects on phase evolution caused by the addition of a new sintering agent, lithium borosilicate, Li 2 O·B 2 O 3 ·SiO 2 (LBS) glass to 0.9MgTiO 3 –0.1CaTiO 3 ceramic and resultant dielectric properties were investigated. The added LBS glass, a liquid phase sintering agent, significantly lowered the densification temperature from 1300° to about 950°C, while yielding decomposition of MgTiO 3 into MgTi 2 O 5 and Mg 2 TiO 4 . At the same time, the by‐products of the decomposition reaction, MgO and TiO 2 , were dissolved into the glass network. Such phase evolution partly compensated the influence of deleterious glass addition so that the specimen demonstrated fairly good apparent dielectric properties.