Title:
GLASS POWDER CRYSTALLIZABLE TO YIELD SINTERED GLASS CERAMIC CONTAINING HEXAGONAL CORDIERITE AS PRINCIPAL CRYSTALLINE PHASE
Document Type and Number:
Japanese Patent JP2566183
Kind Code:
B2
Abstract:
PURPOSE: To obtain a glass powder having a compsn. crystallizable to yield a sintered glass ceramic having good electrical properties, dielectric and mechanical characteristics, particularly suitable for the production of electrotechnical and electronic parts and contg. hexagonal cordierite as the principal crystalline phase at ≤970°C sintering temp. in a relatively broad sintering temp. range.
CONSTITUTION: This glass powder has the compsn., by mol on an oxide basis, of 48-61% SiO2, 10-16% Al2O3, 23-35% MgO, 0-4% B2O3, 0-2.5% P2O5, 0.5-5% ΣB2O3+P2O5, 0-3% ZnO, 0-3% CaO, 0-1.5% BaO and 0.5-12% F as a substitute for O. The glass powder may contain ≤3 mol.%, in total, of one or more of the oxides PbO, SrO and SnO2. The sintering conditions can be varied within relatively broad limits without any average effect on the product obtd.
Inventors:
FURIIDORITSUHI ZUIIBERUSU
Application Number:
JP2344692A
Publication Date:
December 25, 1996
Filing Date:
January 14, 1992
Export Citation:
Assignee:
ZEISS STIFTUNG
International Classes:
C03C3/085; C03C3/118; C03C10/00; C03C10/08; C03C10/16; C03C12/00; C04B35/18; (IPC1-7): C03C10/08; C03C3/118; C03C12/00; C04B35/18
Domestic Patent References:
| JP51111218A | ||||
| JP1298042A |
Attorney, Agent or Firm:
Kichi Shigeki Ta