Method for manufacturing heterogeneous composite material thin plate and heterogeneous composite material thin plate manufactured by same

Patent metadata

Field	Value
Publication number	US-12447529-B2
Application number	US-202118247951-A
Country	US
Kind code	B2
Filing date	Oct 15, 2021
Priority date	Oct 15, 2020
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

The present invention relates to a method for manufacturing a heterogeneous composite material thin plate and a heterogeneous composite material thin plate manufactured by same, the method comprising the steps of: (a) ball-milling an aluminum or aluminum alloy powder and a carbon nanotube powder so as to prepare a composite powder; (b) preparing a multi-layered billet comprising the composite powder, the multi-layered billet characterized by comprising a core layer and two or more shell layers surrounding the core layer, wherein the core layer is made of the composite powder or an aluminum alloy, the shell layers excluding the outermost shell layer are made of the composite powder, and the outermost shell layer is made of (i) an aluminum or aluminum alloy powder or (ii) the composite powder; and (c) rolling the multi-layered billet so as to form a thin plate shape.

First claim

The invention claimed is:

1. A method of manufacturing a heterogeneous composite material thin plate, the method comprising:
(a) preparing a composite powder by ball-milling an aluminum or aluminum alloy powder and a carbon nanotube powder;
(b) manufacturing a multilayer billet containing the composite powder and comprising a core layer and two or more shell layers surrounding the core layer, wherein the core layer is made of the composite powder or an aluminum alloy,
each of the shell layers excluding the outermost shell layer is made of the composite powder, and
the outermost shell layer is made of (i) an aluminum or aluminum alloy powder or (ii) the composite powder; and
(c) shaping the multilayer billet into a thin plate by rolling.

2. The method of claim 1 , wherein the core layer is made of the composite powder, and
the respective composite powders comprised in the core layer and each of the shell layers excluding the outermost shell layer differ in composition.

3. The method of claim 1 , wherein the multilayer billet comprises:
the core layer;
a first shell layer surrounding the core layer; and
a second shell layer surrounding the first shell layer.

4. The method of claim 3 , wherein the multilayer billet comprises:
a can-shaped first billet serving as the second shell layer;
a second billet placed in the first billet and serving as the first shell layer; and
a third billet placed in the second billet and serving as the core layer.

5. The method of claim 1 , wherein in the (b) manufacturing, the multilayer billet is subjected to spark plasma sintering under conditions: a temperature in a range of 280° C. to 600° C., a pressure in a range of 30 MPa to 100 MPa, and a duration in a range of 1 second to 30 minutes.

6. A heterogeneous composite material thin plate manufactured by the method of claim 1 .

Assignees

• Nat Univ Pukyong Ind Univ Coop Found

Inventors

• Kwon Hansang

Classifications

• B22F2998/10

  Processes characterised by the sequence of their steps · CPC title

• B22F2304/10

  Micron size particles, i.e. above 1 micrometer up to 500 micrometer · CPC title

• B22F2302/403

  Carbon nanotube · CPC title

• B22F2301/052

  Aluminium · CPC title

• B22F2202/13

  Use of plasma · CPC title