Engineered feedstocks for additive manufacture of glass

Patent metadata

Field	Value
Publication number	US-12351718-B2
Application number	US-201816212525-A
Country	US
Kind code	B2
Filing date	Dec 6, 2018
Priority date	Jun 6, 2016
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

According to one embodiment, a method includes forming a structure by printing an ink, the ink including a glass-forming material, and heat treating the formed structure for converting the glass-forming material to glass. According to another embodiment, an ink composition includes a glass-forming material and a solvent.

First claim

What is claimed is:

1. An ink composition, comprising:
a glass-forming material configured to be densified to a glass form,
wherein the glass-forming material consists essentially of inorganic particles of a single composition; and
a solvent.

2. The ink composition of claim 1 , wherein the single composition is chosen from: fumed silica, colloidal silica, LUDOX colloidal silica dispersion, titania particles, zirconia particles, alumina particles, and metal chalcogenide particles.

3. The ink composition of claim 1 , wherein the glass-forming material includes a silica polymer.

4. The ink composition of claim 1 , further comprising an effective amount of a second component for altering a property of a glass structure created using the ink.

5. The ink composition of claim 4 , wherein the second component affects the property chosen from: an optical characteristic, a mechanical characteristic, a magnetic characteristic, a thermal characteristic, an electrical characteristic, and a chemical characteristic.

6. The ink composition of claim 4 , wherein the second component is a color altering component chosen from: metal nanoparticles, sulfur, metal sulfide, metal chloride, and metal oxide.

7. The ink composition of claim 4 wherein the second component is an absorptivity altering component chosen from: cerium oxide, iron, copper, chromium, silver, and gold.

8. The ink composition of claim 4 , wherein the second component is a refractive index altering component chosen from: titanium, zirconium, aluminum, lead, thorium, barium.

9. The ink composition of claim 4 , wherein the second component is a dispersion altering component chosen from: barium and thorium.

10. The ink composition of claim 4 , wherein the second component is an attenuation and/or optical density altering component chosen: an alkaline metal and an alkaline earth metal.

11. The ink composition of claim 4 , wherein the second component is a photosensitivity altering component chosen from: silver, cerium, and fluorine.

12. The ink composition of claim 4 , wherein the second component is an electrical conductivity altering component chosen from: alkali metal ions, fluorine, and carbon nanotubes.

13. The ink composition of claim 4 , wherein the second component is a birefringence altering component chosen from: titanium, zirconium, zinc, niobium, strontium, lithium, in combination with silicon and oxygen.

14. The ink composition of claim 4 , wherein the second component is a thermal conductivity altering component chosen from: a metal and carbon nanotubes.

15. The ink composition of claim 4 , wherein the second component is a thermal emissivity altering component chosen from: tin oxide and iron.

16. The ink composition of claim 4 , wherein the second component is a thermal expansion altering component chosen from: boron oxide and titanium oxide.

17. The ink composition of claim 4 , wherein the second component is sodium carbonate for altering a glass transition temperature of the glass structure.

18. The ink composition of claim 4 , wherein the second component is a melting point altering component chosen from: sodium, aluminum, and lead.

19. The ink composition of claim 4 , wherein the second component is a gain coefficient altering component chosen from: rare earth ions and transition metal ions.

20. The ink composition of claim 4 , wherein the second component affects a property chosen from: photoemission, luminescence, and fluorescence.

21. The ink composition of claim 4 , wherein the second component is a chemical reactivity altering component chosen from: an alkaline metal, an alkaline earth metal, and silver.

22. The ink composition of claim 4 , wherein the second component is a density altering component chosen from: titanium, zirconium, aluminum, lead, thorium, and barium.

23. The ink composition of claim 1 , further comprising an effective amount of an additive for causing an effect chosen from: enhancing dispersion, enhancing phase stability, enhancing network strength, controlling pH, changing pH, modifying rheology, reducing crack formation during drying, inhibiting crystallization, and aiding in sintering.

24. The ink composition of claim 1 , further comprising an effective amount of an additive for enhancing dispersion, the additive being chosen from: a surfactant, a polyelectrolyte, and an inorganic acid.

25. The ink composition of claim 1 , further comprising an effective amount of an additive for enhancing phase stabilization.

26. The ink composition of claim 1 , further comprising an effective amount of an additive for inhibiting crystallization, the additive being chosen from: B 2 O 3 , Al 2 O 3 and Ga 2 O 3 .

27. The ink composition of claim 1 , wherein the glass-forming material is present in the range of about 5 vol % to about 50 vol % based on a total volume of the ink composition, the solvent is present in the range of about 30 vol % to about 95 vol % based on the total volume of the ink composition; and further comprising one or more second components present in the range of 0 wt % to about 20 wt % based on the total volume of the ink composition; and one or more additives present in the range of from 0 wt % to about 10 wt % based on the total volume of the ink composition.

28. The ink composition of claim 1 , wherein the glass-forming material includes an inorganic polymer.

29. The ink composition of claim 1 , wherein the ink is configured to be printed into a low density form having the glass-forming material and densified into a glass form.

30. The ink composition of claim 29 , wherein the low density form is porous and amorphous.

31. The ink composition of claim 1 , wherein the ink is configured to be printed and densified into a glass form.

32. The ink composition of claim 1 , wherein the composition is configured to form a three-dimensional structure that is self-supporting.

33. The ink composition of claim 1 , wherein the composition is a resin for a stereolithography printing technique.

34. The ink composition of claim 1 , wherein the composition is an ink for an extrusion-based additive manufacturing process.

35. The ink composition of claim 1 , wherein the composition is a powder for a laser melting additive manufacturing process.

36. An ink composition comprising:
a glass-forming material; and
a solvent, wherein-the glass-forming material includes intermixed particles, wherein an average diameter of the intermixed particles is in a range of about 100 nanometers to about 400 nanometers.

37. The ink composition of claim 36 , wherein the glass-forming material includes a silica-germanium oxide polymer.

38. The ink composition of claim 36 , wherein the glass-forming material includes a metal-containing organic precursor and/or a metal-containing inorganic precursor.

39. The ink composition of claim 38 wherein the precursor is chosen from: metalalkoxides, siloxanes, silicates, phosphates, chalcogenides, metal-hydroxides, metal salts.

40. The ink composition of claim 36 , wherein the glass-forming material includes blended particles having the intermixed particles and at least one other type of particle having a different composition

Assignees

• L Livermore Nat Security Llc

Inventors

• Dylla-Spears Rebecca
• Baumann Theodore F
• Duoss Eric B
• Kuntz Joshua D
• Miles Robin
• Nguyen Du
• Spadaccini Christopher
• Suratwala Tayyab I
• Yee Timothy Dexter
• Zhu Cheng
• Meyers Cameron David
• Dudukovic Nikola
• Fears Tyler
• Qian Fang
• Sasan Koroush
• Destino Joel

Classifications

• C09D11/033

  characterised by the solvent · CPC title

• C09D11/02

  Printing inks (C09D11/30 takes precedence) · CPC title

• C09D1/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances · CPC title

• C03B19/01

  by progressive fusion {or sintering} of powdered glass onto a shaping substrate, i.e. accretion {, e.g. plasma oxidation deposition (making fibre preforms C03B37/01291)} · CPC title

• B33Y70/00

  Materials specially adapted for additive manufacturing · CPC title