Ti-INCLUDED OXIDE DISPERSION STRENGTHENED COPPER ALLOY AND METHOD FOR MANUFACTURING DISPERSED COPPER

Patent metadata

Field	Value
Publication number	US-2016189820-A1
Application number	US-201514694969-A
Country	US
Kind code	A1
Filing date	Apr 23, 2015
Priority date	Dec 26, 2014
Publication date	Jun 30, 2016
Grant date	—

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

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 . 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 in copper or copper alloy to prepare an oxide dispersion strengthened copper alloy by oxidation.

5 . The copper alloy of claim 4 , wherein the titanium is added by 0.06 parts by weight or more with respect to 100 parts by weight of the total alloy.

6 . The copper alloy of claim 4 , wherein x/(x+y) is 0.125 or more in which x is titanium weight and y is metal weight except copper.

7 . The copper alloy of claim 4 , wherein the metal is aluminum and is added to be a titanium/aluminum ratio of 0.14 parts by weight or more.

8 . The copper alloy of claim 4 , wherein the copper alloy is in the form of plate, wire, or powder.

9 . Oxide dispersion copper, wherein a metal oxide, prepared by oxidizing a copper alloy of claim 4 through oxygen diffusion and oxidation, is dispersed.

10 . The oxide dispersion copper of claim 9 , wherein the metal oxide comprises at least one metal oxide selected from the group consisting of Ti-doped aluminum oxide, aluminum titanium oxide, titanium oxide, iron titanium oxide, nickel titanium oxide and iron nickel titanium oxide.

11 . The oxide dispersion copper of claim 10 , 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 .

12 . The oxide dispersion copper of claim 11 , the metal oxide comprises TiO 2 .

13 . The oxide dispersion copper of claim 9 , wherein an average particle size of the dispersion phase of the oxide dispersion copper is 35 nm or less.

14 . A method for preparing oxide dispersion copper comprising:
casting a copper alloy of claim 4 ; and oxidizing the copper alloy by reacting with oxygen under oxygen supply.

15 . The method of claim 14 , wherein the oxygen supply is carried by atmospheric pressure, oxygen atmosphere, or an oxidizing agent.

16 . The method of claim 14 , wherein the method for preparing oxide dispersion copper comprises heat treatment or plastic deformation.

17 . A Cu 2 O oxidizing agent prepared as an oxidation layer eliminated from the surface of an oxide dispersion copper which is oxidation-treated by the method of claim 14 and comprising at least one selected from the group consisting of Al, Ti, Ni and Fe.

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

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

Assignees

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

Inventors

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

Classifications

• C01G3/02

  Oxides; Hydroxides · 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

• C22C9/06

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

• B22D27/006

  by using reactive gases · CPC title