Patent ID: 6878464
Filing Date: 2005-04-12
Classification: C03C,C04B,H01L,H05K,Y10T

Abstract:
1. A glass-ceramic composite material comprising a glass powder and an alumina-containing ceramic powder, wherein the glass powder comprises: about 30 to 60 mol % of a silicon oxide calculated as SiO about 20 to 40 mol % of a barium oxide calculated as BaO; 0 to about 40 mol % of a magnesium oxide calculated as MgO; 0 to about 40 mol % of a zinc oxide calculated as ZnO; 0 to about 20 mol % of a boron oxide calculated as B wherein the total content of MgO and ZnO is about 10 to 40 mol %; wherein the content of the glass powder is at least about 50 wt % with respect to the entire amount of the glass powder and the ceramic powder; and wherein the glass-ceramic composite material is capable of precipitating a BaO.Al wherein said glass-ceramic composite material further comprises a positive amount of up to about 3 parts by weight of a copper oxide calculated as CuO by weight of the glass powder and the ceramic powder.