Method for producing nanoparticles and the nanoparticles produced therefrom

Patent metadata

Field	Value
Publication number	US-11618077-B2
Application number	US-202217664165-A
Country	US
Kind code	B2
Filing date	May 19, 2022
Priority date	Mar 4, 2014
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

Disclosed herein is a method comprising disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil; activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid; generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; and producing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles. Disclosed herein too is a composition comprising first metal or a first ceramic; and particles comprising carbides and/or nitrides dispersed therein. Disclosed herein too is a composition comprising nanoparticles comprising chromium carbide, iron carbide, nickel carbide, γ-Fe and magnesium nitride.

First claim

The invention claimed is:

1. An article comprising:
an article material and a surface, wherein a composition is present on the surface of the article, wherein the composition comprises:
a conductive material;
a plurality of first abrasive particles comprising an abrasive particle; and
a plurality of second particles comprising a reaction product of the conductive material and the article material, a reaction product of the first abrasive particles and the article material, or a combination thereof.

2. The article of claim 1 , wherein the article material comprises a metal or alloy of a transition metal, an alkali metal, an alkaline earth metal, a lanthanide, an actinide, a poor metal, or any combination thereof.

3. The article of claim 1 , wherein the article material comprises metal or alloy of nickel, cobalt, chromium, aluminum, gold, platinum, iron, silver, tin, antimony, titanium, tantalum, vanadium, hafnium, palladium, cadmium, zinc, or any combination thereof.

4. The article of claim 1 , wherein the article material comprises iron.

5. The article of claim 1 , wherein the article material comprises stainless steel.

6. The article of claim 1 , wherein the article material comprises iron, chromium, nickel, or any combination thereof.

7. The article of claim 1 , wherein the conductive material comprises a metallic material, a ferromagnetic material, or any combination thereof.

8. The article of claim 1 , wherein the conductive material has a melting point temperature that is lower than a melting point temperature of the article material.

9. The article of claim 1 , wherein the conductive material is a solid at room temperature.

10. The article of claim 1 , wherein the conductive material comprises magnesium, tin, lead, antimony, manganese, chromium, mercury, cadmium, silver, zinc, zirconium, silicon, or any combination thereof.

11. The article of claim 1 , wherein the plurality of first abrasive particles comprises diamonds, cubic boron nitride, steel abrasive, emery, silicon carbide, aluminum oxide, and any combination thereof.

12. The article of claim 1 , wherein the plurality of first abrasive particles comprises one or more carbonaceous particles.

13. The article of claim 12 , wherein the one or more carbonaceous particles comprise carbon black, carbon nanotubes, carbon fibers, graphite flakes or lumps, crystalline flake graphite, amorphous graphite, vein graphite, and any combination thereof.

14. The article of claim 1 , wherein the plurality of first abrasive particles has an average particle size of 1 nanometer to 10 micrometers.

15. The article of claim 1 , wherein the plurality of second particles has an average particle size of from 1 nanometer to 1000 nanometers.

16. The article of claim 1 , wherein the plurality of second particles has an average particle size of from 1 micrometer to 1000 micrometers.

17. The article of claim 1 , wherein the composition further comprises a plurality of third non-abrasive particles comprising carbon, and a plurality of nanoparticles comprises one or more alloys comprising a reaction product of the non-abrasive particles and the article material.

18. The article of claim 17 , wherein the third non-abrasive particles comprise iron carbides, silicon carbides, tungsten carbides, and any combination thereof.

19. The article of claim 1 , wherein the second particles comprise chromium carbide (Cr 7 C 3 ), iron carbide (Fe 3 C), nickel carbide (Ni 3 C), (FeCr) 3 C, or any combination thereof.

20. The article of claim 1 , wherein the second particles comprise magnesium nickel (MgNi 2 ).

Assignees

• Univ Florida
• Ut Battelle Llc
• Utbattelle Llc

Inventors

• Manuel Michele Viola
• Henderson Hunter B
• Rios Orlando
• Ludtka Gerard M

Classifications

• B22F1/054 Primary

  Nanosized particles · CPC title

• B22F1/00 Primary

  Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties · CPC title

• B22F2302/20

  Nitride · CPC title

• B22F1/12

  Metallic powder containing non-metallic particles (containing lubricating or binding agents or organic material B22F1/10) · CPC title

• H01F1/0036

  showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity, (H01F1/153, H01F1/42 and H01F10/00 take precedence; magnetoresistive sensors G01D5/16, G01R33/06; magnetoresistive recording G11B5/39; magnetic-field-controlled resistors H10N50/10) · CPC title