Corning Incorporated
Boron phosphate glass-ceramics with low dielectric loss

Abstract:

A glass-ceramic that includes: SiO.sub.2 from about 35 mol % to about 80 mol %; B.sub.2O.sub.3 from about 10 mol % to about 50 mol %; P.sub.2O.sub.5 from about 10 mol % to about 50 mol %; and an optional addition of one or more of CaO, MgO and Bi.sub.2O.sub.3 from 0 mol % to about 5 mol %, wherein the glass-ceramic further comprises a boron-phosphate crystalline phase.