Iron- and manganese-doped tungstate and molybdate glass and glass-ceramic articles

Patent metadata

Field	Value
Publication number	US-12509388-B2
Application number	US-202017430898-A
Country	US
Kind code	B2
Filing date	Feb 6, 2020
Priority date	Feb 20, 2019
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A glass-ceramic that includes: SiO2 from 40 mol % to 80 mol %; Al2O3 from 3 mol % to 20 mol %; B2O3 from 3 mol % to 50 mol %; WO3 plus MoO3 from 1 mol % to 18 mol %; Fe2O3 plus MnO2 from 0.1 mol % to 2 mol %; and R2O from 0 mol % to 15 mol %. The R2O is one or more of Li2O, Na2O, K2O, Rb2O and Cs2O. Further, R2O—Al2O3 ranges from −12 mol % to +4 mol %.

First claim

What is claimed is:

1 . An article, comprising:
SiO 2 from 40 mol % to 80 mol %; Al 2 O 3 from 3 mol % to 20 mol %; B 2 O 3 from 3 mol % to 50 mol %; WO 3 plus MoO 3 from 3.5 mol % to 18 mol %; Fe 2 O 3 plus MnO 2 from 0.1 mol % to 2 mol %; RO from 0.01 mol % to 0.5 mol %, wherein RO is a total amount of MgO, CaO, SrO, ZnO, and BaO; and R 2 O from 0 mol % to 15 mol %, wherein the R 2 O is a total amount of Li 2 O, Na 2 O, K 2 O, Rb 2 O and Cs 2 O, wherein R 2 O—Al 2 O 3 ranges from −12 mol % to +4 mol %.

2 . The article of claim 1 , further comprising:
F from 1 mol % to 10 mol %.

3 . The article of claim 1 , wherein WO 3 is from 3 mol % to 15 mol %.

4 . The article of claim 1 , wherein MoO 3 is from 2 mol % to 15 mol %.

5 . The article of claim 1 , further comprising:
SnO 2 from 0.01 mol % to 1 mol %.

6 . The article of claim 1 , wherein RO is from 0.1 mol % to 0.5 mol %.

7 . The article of claim 1 , wherein the article exhibits an average absorbance of at least 5 OD/mm in an ultraviolet (UV) wavelength band from 300 nm to 400 nm and an average absorbance of at least 2 OD/mm in a visible wavelength band from 400 nm to 700 nm.

8 . The article of claim 1 , wherein the article comprises an optical transmittance of at least 50% from 700 nm to 3000 nm and a sharp cutoff wavelength from 320 nm to 525 nm.

9 . The article of claim 1 , wherein the article exhibits a haze of 10% or less at a thickness of 1 mm.

10 . A glass-ceramic article, comprising:
the composition of the article of claim 1 ; at least one amorphous phase and one crystalline phase, and further wherein the crystalline phase comprises a plurality of crystalline precipitates homogenously distributed within a glassy phase, the plurality of crystalline precipitates comprising an oxide of at least one of the chemical form MWO 4 and MMoO 4 , wherein M is Fe 2+ or Mn 2+ .

11 . The glass-ceramic article of claim 10 , further comprising:
one or more dopants selected from the group consisting of H, S, Cl, Ti, V, Cr, Co, Ni, Cu, Ga, Se, Br, Zr, Nb, Ru, Rh, Pd, Ag, Cd, In, Sb, Te, I, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ta, Os, Ir, Pt, Au, Ti, Pb, Bi and U, wherein the one or more dopants is present from 0.0001 mol % to 0.5 mol %.

12 . The glass-ceramic article of claim 10 , wherein the article exhibits an average absorbance of at least 5 OD/mm in an ultraviolet (UV) wavelength band from 300 nm to 400 nm and an average absorbance of at least 2 OD/mm in a visible wavelength band from 400 nm to 700 nm.

13 . The glass-ceramic article of claim 10 , wherein the article comprises an optical transmittance of at least 50% from 700 nm to 3000 nm and a sharp cutoff wavelength from 320 nm to 525 nm.

14 . The glass-ceramic article of claim 10 , wherein the plurality of crystalline precipitates comprises a longest length dimension of from 1 nm to 500 nm, as measured by Electron Microscopy.

15 . The article of claim 1 , wherein R 2 O—Al 2 O 3 ranges from −3 mol % to +4 mol %.

16 . The article of claim 1 , wherein R 2 O—Al 2 O 3 ranges from −3 mol % to +1 mol %.

17 . The article of claim 1 , wherein Al 2 O 3 ranges from 10 mol % to 15 mol %.

18 . The article of claim 1 , wherein B 2 O 3 ranges from 3 mol % to 25 mol %.

19 . The article of claim 1 , wherein WO 3 plus MoO 3 ranges from 3.5 mol % to 8 mol %.

Assignees

• Corning Inc

Inventors

• Dejneka Matthew John
• Kohl Jesse

Classifications

• C03C2204/00

  Glasses, glazes or enamels with special properties · CPC title

• C03C10/00

  Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition · CPC title

• C03C3/118

  containing aluminium · CPC title

• C03C3/097

  containing phosphorus, niobium or tantalum · CPC title

• C03C3/091

  containing aluminium · CPC title