Ti-included oxide dispersion strengthened copper alloy and method for manufacturing dispersed copper

Patent metadata

Field	Value
Publication number	US-9972410-B2
Application number	US-201514694969-A
Country	US
Kind code	B2
Filing date	Apr 23, 2015
Priority date	Dec 26, 2014
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

The present invention relates to a Ti-included oxide dispersion strengthened copper alloy and a method for preparing oxide dispersion copper by an internal oxidation Ti-included copper alloy, which thus allows spheronization and refinement of the oxides, and reduction of distance between the oxides. According to the present invention, there is provided oxide dispersion copper having excellent hardness and tensile strength as well as electrical conductivity by performing spheronization and refinement for Ti-included oxide and thus further reducing the distance between oxides.

First claim

What is claimed is:

1. Oxide dispersion copper wherein at least one metal oxide selected from the group consisting of Ti-doped aluminum oxide, aluminum titanium oxide, iron titanium oxide, nickel titanium oxide and iron nickel titanium oxide is dispersed in copper or copper alloy.

2. The oxide dispersion copper of claim 1 , wherein the metal oxide comprises at least one metal oxide selected from the group consisting of Ti-included Al 2 O 3 , Al 3 Ti 5 O 2 , TiO 2 , Fe 2 TiO 4 , FeTiO 3 , NiTiO 3 , and (Fe, Ni)TiO 3 .

3. The oxide dispersion copper of claim 1 , wherein the dispersion copper is in the form of plate, wire, or powder.

4. An electrode material, a wear-resistant coating layer, or a small wear-resistant material prepared by using the oxide dispersion copper of claim 1 .

5. Oxide dispersion copper, wherein a metal oxide, prepared, by oxidizing a copper alloy through oxygen diffusion and oxidation, is dispersed,
wherein the copper alloy is a Ti-included copper alloy comprising at least one metal selected from the group consisting of aluminum, nickel, iron, chromium, vanadium, zirconium, manganese, cobalt, zinc, iridium, molybdenum, and an alloy thereof which forms a metal oxide selected from the group consisting of Ti-doped aluminum oxide, aluminum titanium oxide, iron titanium oxide, nickel titanium oxide, and iron nickel titanium oxide in copper or copper alloy to prepare an oxide dispersion strengthened copper alloy by oxidation.

6. The oxide dispersion copper of claim 5 , wherein the metal oxide comprises at least one metal oxide selected from the group consisting of Ti-included Al 2 O 3 , Al 3 Ti 5 O 2 , TiO 2 , Fe 2 TiO 4 , FeTiO 3 , NiTiO 3 , and (Fe, Ni)TiO 3 .

7. The oxide dispersion copper of claim 6 , the metal oxide comprises TiO 2 .

8. The oxide dispersion copper of claim 5 , wherein an average particle size of the dispersion phase of the oxide dispersion copper is 35 nm or less.

9. An electrode material, a wear-resistant coating layer, or a small wear-resistant material prepared by using the oxide dispersion copper of claim 5 .

10. A method for preparing oxide dispersion copper comprising:
casting a Ti-included copper alloy comprising at least one metal selected from the group consisting of aluminum, nickel, iron, chromium, vanadium, zirconium, manganese, cobalt, zinc, iridium, molybdenum, and an alloy thereof; and
oxidizing the Ti-included copper alloy by reacting with oxygen under oxygen supply to form within the Ti-included copper alloy a dispersed metal oxide selected from the group consisting of Ti-doped aluminum oxide, aluminum titanium oxide, iron titanium oxide, nickel titanium oxide, and iron nickel titanium oxide.

11. A Cu 2 O oxidizing agent derived from an oxidation layer eliminated from the surface of an oxide dispersion copper which is oxidation-treated by the method of claim 10 and comprising at least one selected from the group consisting of Al, Ti, Ni and Fe.

12. The method of claim 10 , wherein the oxygen supply is carried by atmospheric pressure, oxygen atmosphere, or an oxidizing agent.

13. The method of claim 10 , wherein the method for preparing oxide dispersion copper comprises heat treatment or plastic deformation.

Assignees

• Korea Inst Mach & Materials
• Global Frontier Hybrid Interface Mat

Inventors

• Han Seung Zeon
• Joh Hong Rae
• Ahn Jee Hyuk
• Kim Kwang Ho

Classifications

• C22C9/01

  with aluminium as the next major constituent · CPC title

• C22C9/06

  with nickel or cobalt as the next major constituent · CPC title

• B22D21/025

  Casting heavy metals with high melting point, i.e. 1000 - 1600 degrees C, e.g. Co 1490 degrees C, Ni 1450 degrees C, Mn 1240 degrees C, Cu 1083 degrees C · CPC title

• H01B1/026 Primary

  Alloys based on copper · CPC title

• C22C9/00

  Alloys based on copper · CPC title