Textured particles

Patent metadata

Field	Value
Publication number	US-11938535-B2
Application number	US-202117527064-A
Country	US
Kind code	B2
Filing date	Nov 15, 2021
Priority date	Nov 19, 2020
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

Textured particles and methods of making the same. A textured particle includes an inner core and a spherical solid outer shell including an outer surface. The inner core is inside the outer shell. The outer surface includes a first tier texture including a first metal, wherein the first metal is greater than 50 atomic % of a total atomic content of all metals in the first tier texture; a second tier texture including the second metal, wherein the second metal is greater than 50 atomic % of a total atomic content of all metals in the second tier texture; and a third tier texture including the third metal, wherein the third metal is greater than 50 atomic % of a total atomic content of all metals in the third tier texture. The first metal, second metal, and third metals are different metals.

First claim

What is claimed is:

1. A textured particle comprising:
an inner core; and
a spherical solid outer shell comprising an outer surface, wherein the inner core is inside the outer shell, the outer shell comprises a first tier texture between the outer surface and the inner core, the first tier texture comprising a first metal that is greater than 50 atomic % of a total atomic content of all metals in the first tier texture, wherein the first tier texture comprises cracks between the outer surface and the inner core, and the outer surface comprises
a second tier texture comprising a second metal, wherein the second metal is greater than 50 atomic % of a total atomic content of all metals in the second tier texture, and
a third tier texture comprising a third metal, wherein the third metal is greater than 50 atomic % of a total atomic content of all metals in the third tier texture;

wherein the first metal, second metal, and third metals are different metals, and
wherein the second tier texture is on the cracks in the first tier texture, and the third tier texture is on a surface of the second tier texture.

2. The textured particle of claim 1 , wherein the core comprises a metal composition, wherein the metal composition in the core comprises the third metal, wherein the third metal is greater than 50 atomic % of a total atomic content of the first metal, the second metal, and the third metal in the metal composition.

3. The textured particle of claim 1 , wherein the first metal is greater than 50 atomic % of a total atomic content of the first metal, the second metal, and the third metal in the outer shell.

4. The textured particle of claim 1 , wherein the first metal, the second metal, and the third metals in the first tier texture, second tier texture, and the third tier texture are in the form of an oxide of the first metal, an oxide of the second metal, and an oxide of the third metal.

5. The textured particle of claim 1 , wherein the first metal, the second metal, and the third metals in the first tier texture, second tier texture, and the third tier texture are in the form of nitrides, nitrates, nitrites, organometallics, or a combination thereof, of the first metal, second metal, or the third metal.

6. The textured particle of claim 1 , wherein the textured particle has a diameter of 0.11 microns to 100 microns.

7. The textured particle of claim 1 , wherein the textured particle has a diameter of 1.1 microns to 10 microns.

8. The textured particle of claim 1 , wherein the combination of the first, second, and third tier textures extend away from the inner core a distance of 0.1 microns to 50 microns.

9. The textured particle of claim 1 , wherein the first metal, the second metal, and the third metal are independently chosen from Al, Fe, Cu, Zn, Ga, Ge, Ag, Cd, In, Sn, Sb, Te, Ho, Au, Pb, and Bi.

10. The textured particle of claim 1 , wherein the first metal, the second metal, and the third metal are independently chosen from Ga, In, Sn, Bi, Al, Pb.

11. The textured particle of claim 1 , wherein the first metal is Ga, the second metal is In, and the third metal is Sn.

12. The textured particle of claim 1 , wherein
the first metal is In, the second metal is Sn, and the third metal is Bi, or
wherein the first metal is Bi, the second metal is In, and the third metal is Sn.

13. The textured particle of claim 1 , wherein the second tier texture, third tier texture, or a combination thereof, comprises spheres, nanowires, irregular shapes, a fractal pattern, or a combination thereof.

14. A catalyst, tribological device, optical device, or surface coating comprising the textured particle of claim 1 .

15. A method of using the textured particle of claim 1 , the method comprising:
using the textured particle as a component of a catalyst, a tribological device, an optical device, a surface coating, or a combination thereof.

16. A method of using the textured particle of claim 1 , the method comprising:
using the textured particle as a catalyst, to inhibit corrosion, to tune surface properties, to tune optical properties, to control wetting of a surface, or a combination thereof.

17. A method of forming the textured particle of claim 1 , the method comprising: heat treating a starting material particle comprising
an inner core comprising the first metal, the second metal, and the third metal; and
a solid outer shell comprising an oxide of the first metal.

18. The method of claim 17 , wherein the first metal, the second metal, and the third metal in the core are a metastable liquid in the core of the starting material particle.

19. The textured particle of claim 1 , wherein the second tier texture is concentrated on the cracks in the first tier texture.

20. A textured particle comprising:
an inner core; and
a spherical solid outer shell comprising an outer surface, wherein the inner core is inside the outer shell, the outer surface comprising
a first tier texture comprising a first metal that is Ga, wherein the first metal is greater than 50 atomic % of a total atomic content of all metals in the first tier texture,
a second tier texture comprising a second metal that is In, wherein the second metal is greater than 50 atomic % of a total atomic content of all metals in the second tier texture, and
a third tier texture comprising a third metal that is Sn, wherein the third metal is greater than 50 atomic % of a total atomic content of all metals in the third tier texture;

wherein the first metal, second metal, and third metals are different metals, and
wherein the first tier texture, second tier texture, third tier texture, or a combination thereof, comprise nanowires, irregular shapes, a fractal pattern, or a combination thereof.

Assignees

• Univ Iowa State Res Found Inc

Inventors

• Thuo Martin
• Chang Boyce S
• Martin Andrew
• Kiarie Winnie M

Classifications

• B22F1/065 Primary

  Spherical particles · CPC title

• B22F1/16

  Metallic particles coated with a non-metal (coated with lubricating or binding agents or with organic material B22F1/10) · CPC title

• B22F2201/01

  Reducing atmosphere · CPC title

• B22F2301/20

  Refractory metals · CPC title

• B22F1/17

  Metallic particles coated with metal · CPC title