Corning Incorporated
Yoshiokaite glass-ceramics obtained from glass frits

Abstract:

A glass ceramic material is disclosed that includes a residual glass, and a crystalline phase that includes a yoshiokaite phase. The yoshiokaite phase constitutes a main crystalline phase of the glass ceramic material. A method for making a glass ceramic material is also disclosed that includes heat treating frit glass to form the glass ceramic material, wherein the frit glass comprises: SiO.sub.2 from 15 mol % to 37 mol %; Al.sub.2O.sub.3 from 40 mol % to 47 mol %; and CaO from 20 mol % to 30 mol %.