Mill additions for sealing glasses

Details Mill additions for sealing glasses Mill additions for sealing glasses

C - Chemistry, Metallurgy

03

C

C03C 8/02 (2006.01) C03C 8/14 (2006.01) C03C 8/24 (2006.01) C03C 27/06 (2006.01)

Patent

CA 2152133

A sealing glass material comprising a thermally crystallizable PbO-ZnO-B2O3 sealing glass frit and a mill addition selected from alumina, zircon, and manganese dioxide, the mill addition being in an amount sufficient to increase the mechanical strength in a fusion seal to at least 55.2 MPa (8000 psi), but the amount being not over about 5 % by weight of the sealing material.

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