Direct additive synthesis from UV-induced solvated electrons in feedstock of halogenated material and negative electron affinity nanoparticle

Patent metadata

Field	Value
Publication number	US-11670507-B2
Application number	US-202117189702-A
Country	US
Kind code	B2
Filing date	Mar 2, 2021
Priority date	May 10, 2018
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

In an embodiment, a system includes a three-dimensional (3D) printer, a feedstock, and a laser. The three-dimensional printer includes a platen including an inert metal, and an enclosure including an inert atmosphere. The feedstock is configured to be deposited onto the platen. The feedstock includes a halogenated solution and a nanoparticle having negative electron affinity. The laser is configured to induce the nanoparticle to emit solvated electrons into the halogenated solution to form, by reduction, a ceramic and a diatomic halogen.

First claim

What is claimed is:

1. A system comprising:
a three-dimensional (3D) printer comprising:
a platen comprising an inert metal; and
an enclosure comprising an inert atmosphere; and

a feedstock configured to be deposited onto the platen, the feedstock comprising:
a halogenated solution; and
a nanoparticle having negative electron affinity; and

a laser configured to induce the nanoparticle to emit solvated electrons into the halogenated solution to form, by reduction, a ceramic and a diatomic halogen.

2. The system of claim 1 , wherein:
the halogenated solution is one or more of carbon tetrachloride or carbon tetrabromide; and
the ceramic comprises a polycrystalline diamond.

3. The system of claim 1 , wherein:
the nanoparticle is one or more of diamondoid or hydrogen-terminated nanodiamond; and
the ceramic comprises a polycrystalline diamond.

4. The system of claim 1 , wherein:
the halogenated solution comprises an sp 3 -carbon contributor and an sp 1 -carbon contributor; and
the ceramic comprises a mixed carbon hybrid orbital ceramic.

5. The system of claim 1 , wherein:
the halogenated solution comprises an sp 2 -carbon contributor and an sp 3 carbon contributor; and
the ceramic comprises a mixed carbon hybrid orbital ceramic.

6. The system of claim 1 , wherein:
the halogenated solution is a halogenated silicon-carbon compound; and
the nanoparticle is a hydrogen-terminated silicon carbide nanoparticle.

7. The system of claim 1 , wherein the ceramic is formed without use of a kiln.

8. A three-dimensional (3D) printer comprising:
an inert atmosphere enclosed within the three-dimensional (3D) printer; and
a platen comprising an inert metal, the platen configured to have a feedstock deposited onto it;
a control unit configured to:
deposit a film of the feedstock onto the platen of the three-dimensional (3D) printer, wherein the feedstock comprises a halogenated solution and a nanoparticle having a negative electron affinity;
induce the nanoparticle to emit solved electrons into the halogenated solution using a laser to form, by reduction, layers of a ceramic and a diatomic halogen;

wherein each layer of the ceramic is formed in a shape corresponding to a cross-section of an object; and
wherein the film of the feedstock is deposited until the layers of the ceramic form the shape of the object.

9. The three-dimensional (3D) printer of claim 8 , wherein:
the halogenated solution is one or more of carbon tetrachloride or carbon tetrabromide; and
the ceramic comprises a polycrystalline diamond.

10. The three-dimensional (3D) printer of claim 8 , wherein:
the nanoparticle is one or more of diamondoid or hydrogen-terminated nanodiamond; and
the ceramic comprises a polycrystalline diamond.

11. The three-dimensional (3D) printer of claim 8 , wherein:
the halogenated solution comprises an sp 3 -carbon contributor and an sp 1 -carbon contributor; and
the ceramic comprises a mixed carbon hybrid orbital ceramic.

12. The three-dimensional (3D) printer of claim 8 , wherein:
the halogenated solution comprises an sp 2 -carbon contributor and an sp 3 carbon contributor; and
the ceramic comprises a mixed carbon hybrid orbital ceramic.

13. The three-dimensional (3D) printer of claim 8 , wherein:
the halogenated solution is a halogenated silicon-carbon compound; and
the nanoparticle is a hydrogen-terminated silicon carbide nanoparticle.

Assignees

• Lockheed Corp

Inventors

• Findley David Glen

Classifications

• H10P14/00

  Formation of materials, e.g. in the shape of layers or pillars · CPC title

• H10W70/692

  Ceramics or glasses · CPC title

• H10P14/265 Primary

  using solutions · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B28B1/001

  Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material (selective deposition modelling of metallic powder B22F10/00; rapid manufacturing of 3D objects in general and in particular of plastics B29C64/00) · CPC title