Bismuth glass composition, and magnetic head and plasma...

Details Bismuth glass composition, and magnetic head and plasma... Bismuth glass composition, and magnetic head and plasma...

2003-03-28

2008-08-05

Group, Karl E (Department: 1793)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S017000, C501S032000, C501S078000, C501S079000, C313S586000, C428S810000, C428S811200

Reexamination Certificate

active

07407902

ABSTRACT:
A Bismuth glass composition including 0.5 to 14 wt % of SiO2, 3 to 15 wt % of B2O3, 4 to 22 wt % of ZnO, 55 to 90 wt % of Bi2O3and 4 wt % or less of Al2O3, and further including 5 wt % or less of an oxide of Group A, 12 wt % or less of an oxide of Group B and 0.1 to 10 wt % of an oxide of Group C, wherein the oxide of Group A is at least one selected from the group consisting of Li2O, Na2O and K2O, the oxide of Group B is at least one selected from the group consisting of MgO, CaO, SrO and BaO, and the oxide of Group C is at least one selected from the group consisting of Sc2O3, Y2O3, La2O3, CeO2, Pr2O3, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3and Lu2O3.

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