Abstract
The sinterability of lithium aluminum silicate (LAS) with silicon nitride added was investigated. The sinterability of LAS improved by the addition of silicon nitride. It is considered that the melting point of LAS was lowered by the addition of silicon nitride, and this liquid phase promoted the densification of LAS. The lattice constant of LAS with silicon nitride added was measured by XRD and it was found that the a-axis was longer and the c-axis was shorter than LAS with no additive. It is supposed that this phenomenon is due to the substitution of nitrogen for oxygen in LAS lattice, and the decreased melting point of LAS with silicon nitride added is also supposed to be influenced by this melting of nitrogen.
