IP Library › Granted Patent US 12,303,863
Granted Patent B2
US 12,303,863 · App. 18/124,979 · Granted May 20, 2025

Porous ceramics for additive manufacturing, filtration, and membrane applications

Inventors: Patrick Campbell (Oakland, CA); Sarah Baker (Dublin, CA); Maira R. Ceron Hernandez (Brentwood, CA); Jennifer Marie Knipe (Oakland, CA); Joshuah K. Stolaroff (Oakland, CA)
Assignee: Lawrence Livermore National Security, LLC
B01J20/06B01D53/228B01D53/229B01D53/62B01D53/80B01D67/00793B01D69/14111B01D71/024B01J20/041B01J20/043B01J20/28004B01J20/28016B01J20/28045B01J20/28083B01J20/28085B01J20/3007B01J20/3042B01J20/3064B01J20/3078B01J20/3085B01J20/3204B01J20/3287B01J20/3293B01J20/3433B01J20/3483B33Y10/00B33Y70/10B33Y80/00B01D2251/304B01D2251/606B01D2253/1124B01D2253/202B01D2253/25B01D2253/304B01D2253/308B01D2257/504B01D2259/40088
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Quick Facts
Patent No.
US 12,303,863
App. No.
18/124,979
Granted
May 20, 2025
Kind
B2
Abstract

An ink for three dimensional printing a ceramic material includes metal oxide nanoparticles and a polymer resin, where a concentration of the metal oxide nanoparticles is at least about 50 wt % of a total mass of the ink. A method of forming a porous ceramic material includes obtaining an ink, where the ink comprises a mixture of metal oxide nanoparticles and a polymer, forming a body from the ink, curing the formed body, heating the formed body for removing the polymer and for forming a porous ceramic material from the metal oxide nanoparticles. The forming the body includes an additive manufacturing process with the ink.

Claims (18)

1. An ink for three dimensional printing a ceramic material, the ink comprising:

metal oxide nanoparticles, a polymer resin, and a cross-linking agent, wherein a concentration of the metal oxide nanoparticles is at least about 50 wt % of a total mass of the ink.

2. The ink as recited in claim 1 , wherein the ink includes metal oxide nanoparticles in a range of about 50 wt % to about 80 wt % of the total mass of the ink.

3. The ink as recited in claim 1 , wherein a concentration of the metal oxide nanoparticles is about 60 wt % of the total mass of the ink.

4. The ink as recited in claim 1 , wherein a concentration of the metal oxide nanoparticles is about 70 wt % of the total mass of the ink.

5. The ink as recited in claim 1 , wherein the metal oxide nanoparticles comprise Y 2 O 3 -doped ZrO 2 .

6. The ink as recited in claim 5 , wherein the metal oxide nanoparticles comprising Y 2 O 3 -doped ZrO 2 have an average diameter in a range of at least about 20 nanometers to about 600 nanometers.

7. A method of forming a porous ceramic material using the ink as recited in claim 1 , the method comprising:

forming a body from the ink, wherein forming the body comprises an additive manufacturing process with the ink;

curing the formed body; and

heating the formed body for removing polymer and for forming a porous ceramic material from the metal oxide nanoparticles.

8. The method as recited in claim 7 , wherein the porous ceramic material has an open cell structure with a plurality of pores, wherein pores of the ceramic material form continuous channels through the ceramic material from one side of the ceramic material to an opposite side of the ceramic material.

9. The method as recited in claim 8 , wherein an average diameter of the pores is in a range of about 50 nanometers to about 500 nanometers.

10. The method of claim 7 , wherein the additive manufacturing process is direct ink writing, wherein the ink is extruded through a nozzle.

11. The method of claim 10 , wherein features of the formed body have an average diameter of at least a diameter of the nozzle.

12. The method of claim 7 , wherein the ink includes a photoinitiator and an inhibitor, wherein the additive manufacturing is projection micro-stereolithography.

13. The method as recited in claim 12 , wherein features of the formed body have an average length of at least about ten microns.

14. The method as recited in claim 7 , wherein the formed body is a free standing porous structure, wherein the formed body has an average diameter of greater than one centimeter.

Assignments (2)
CONFIRMATORY LICENSE (SEE DOCUMENT FOR DETAILS) Recorded Apr 18, 2023
From: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
To: U.S. DEPARTMENT OF ENERGY
Reel/Frame 063361/0902 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 12, 2023
From: CAMPBELL, PATRICK; BAKER, SARAH; CERON HERNANDEZ, MAIRA; KNIPE, JENNIFER MARIE; STOLAROFF, JOSHUAH K.
To: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC
Reel/Frame 063299/0086 →
Continuity (4)
Division 16706526 · Dec 6, 2019
Continuation In Part PCTUS2018039113 · Jun 22, 2018
Provisional Application 62524329 · Jun 23, 2017
Related Publication 20230219058A1 · Jul 13, 2023
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