Cuprous pyrophosphate glasses

Details Cuprous pyrophosphate glasses Cuprous pyrophosphate glasses

1994-12-30

1996-06-25

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 46, 501 47, 501 48, 65 321, 651341, C03C 316, C03C 321, C03C 319, C03C 317

Patent

active

055299610

ABSTRACT:
The subject invention is directed at glasses wherein either a portion of the ZnO or alkali metals, or both, is replaced by Cu.sub.2 O, i.e., monovalent copper. Specifically, the present invention is directed at a glass consisting essentially of, expressed in terms of mole percent on the oxide basis, 28-42% P.sub.2 O.sub.5, 15-30% Cu.sub.2 O, 10-30% R.sub.2 O, wherein R.sub.2 O is selected from the group consisting of 0-15% Li.sub.2 O, 0-20% Na.sub.2 O, and 0-10% K.sub.2 O, and up to a total of 45% of optional ingredients in the indicated proportions selected from the group consisting of 0-10% Al.sub.2 O.sub.3, 0-15% MgO, 0-20% CaO, 0-20% SrO, 0-20% BaO, 0-25% MgO+CaO+SrO+BaO, 0-35% ZnO, 0-10% MnO, 0-2% CeO.sub.2, 0-2% Ln.sub.2 O.sub.3, 0-10 Al.sub.2 O.sub.3 0-10% B.sub.2 O.sub.3, 0-10 Fe.sub.2 O.sub.3 0-10% Al.sub.2 O.sub.3 +B.sub.2 O.sub.3 +Fe.sub.2 O.sub.3, 0-7% MoO.sub.3 0-7% WO.sub.3 0-7% MoO.sub.3 +WO.sub.3, and 0-8% F, the latter as analyzed in weight percent. In addition, it is necessary that the predominate proportion of the copper in the glass is present in the cuprous or Cu.sup.+ oxidation state. These inventive glasses exhibit a transition temperature normally below about 300.degree. C., a working temperature below about 400.degree. C., while, at the same time, exhibiting excellent resistance to attack by water.

REFERENCES:
patent: 4217382 (1980-08-01), Toratani
patent: 4407786 (1983-10-01), Drake et al.
patent: 4482541 (1984-11-01), Telfer et al.
patent: 4874724 (1989-10-01), Beall et al.
patent: 4940677 (1990-07-01), Beall et al.
patent: 4996172 (1991-02-01), Beall et al.
patent: 5021366 (1991-06-01), Aitken
patent: 5043369 (1991-08-01), Bahn et al.
patent: 5071795 (1991-12-01), Beall et al.
patent: 5122484 (1992-06-01), Beall et al.
patent: 5286683 (1994-02-01), Aitken
patent: 5330940 (1994-07-01), Aitken et al.

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