Patent ID: 6534161
Filing Date: 2003-03-18
Classification: C03C,H05K,Y10T

Abstract:
A crystallized glass composition comprising:a principal ingredient represented by x SiO2+y MgO+z Al2O3 where x+y+z is 100 parts by weight and the values x, y and z are on lines or within the region enclosed by lines passing through points A (44.0, 55.0, 1.0), B (34.5, 64.5, 1.0), C (35.0, 30.0, 35.0) and D (44.5, 30.0, 25.5) on a ternary diagram thereof; and about 2 to 20 parts by weight of B2O3 relative to 100 parts by weight of the principal ingredient the crystallized glass composition further contains both a forsterite crystalline phase and an enstatite crystalline phase.