Novel lead-iron phosphate glass

Details Novel lead-iron phosphate glass Novel lead-iron phosphate glass

1987-03-18

1989-07-11

Hunt, Brooks H.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 22, 501 24, 501 45, C03C 810, C03C 808, C03C 600, C03C 316

Patent

active

048472190

ABSTRACT:
The invention described and claimed in the specification relates to the discovery that effective addition of Fe.sub.2 O.sub.3 to a lead phosphate glass results in a glass having enhanced chemical durability and physical stability, and consists essentially of the glass resulting from melting a mixture consisting essentially of, in weight percent, 40-66 percent PbO, 30-55 percent P.sub.2 O.sub.5 and an effective concentration up to 12 percent Fe.sub.2 O.sub.3.

REFERENCES:
patent: 3120493 (1964-02-01), Clark et al.
patent: 3365578 (1968-01-01), Grover et al.
Chem. Ab. 80:73979, (1974); Thomas, K. T., (Int. At. Energy Agency, Vienna, Austria), Report 1971, IAEA-R-874-F.
Chem. Ab. 88(18):125328; Shchavelar et al., U.S.S.R. 587, 111, Jan. 5, 1978.
Sales et al., J. Non-Cryst. Solids, 71(1-3), pp. 103-12, 1985.
Sales et al., Science, 226(4670), pp. 45-8, 1984.

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