Ceramic body glass composition for bonding and filling ceramic parts thereof

摘要

The glass composition is particularly applicable for ferrite constituents used for a highly efficient magnetic head. The composition essentially consists of (a) 55-70 wt % of V2O5, (b) 18-wt % of P2O5, (c1) up to 10 wt % of at least one alkaline metal oxide selected from Na2O, K2O, Rb2O, and Cs2O and (c3) up to 10 wt % of Tl2O. The composition is in a non-crystalline state during reheating and has a softening temperature of 310 DEG C.-400 DEG C. and a thermal expansion coefficient of 70-130x10-7/ DEG C.