Nickel ion-free blue glass composition

Details Nickel ion-free blue glass composition Nickel ion-free blue glass composition

1989-02-17

1989-09-12

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C03C 3087

Patent

active

048660108

ABSTRACT:
A blue glass composition is disclosed. This blue glass composition is based on a standard formulation for soda/lime silica glass, except that neither the basic glass composition nor the coloring components therefor contains nickel. The blue glass color is developed by using coloring components consisting essentially of 0.3-0.6% Fe.sub.2 O.sub.3, 0.004-0.008% Co.sub.3 O.sub.4, and 0.0001-001% Se. The particular blue color of the glass is a neutral blue having a dominant wavelength of 482 nm.+-.1 nm, color purity of 13%.+-.1% and transmission (T) equal to at least 54%.+-.1% using Illuminant C (corrected to 0.25 inch glass thickness).

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