Aluminum alloy and method for manufacturing aluminum alloy

Patent metadata

Field	Value
Publication number	US-2019153569-A1
Application number	US-201716302111-A
Country	US
Kind code	A1
Filing date	Mar 15, 2017
Priority date	May 18, 2016
Publication date	May 23, 2019
Grant date	—

Abstract

An aluminum alloy contains at least one additive element selected from the group consisting of Zr, Cu, Cr, and Zn in an amount of 0.010% by mass or more and 8.0% by mass or less, and C in an amount of 0.01% by mass or more and 10.0% by mass or less.

First claim

1 : An aluminum alloy comprising at least one additive element selected from the group consisting of Zr, Cu, Cr, and Zn in an amount of 0.010% by mass or more and 8.0% by mass or less; and C in an amount of 0.01% by mass or more and 10.0% by mass or less.

2 : The aluminum alloy according to claim 1 , wherein when the aluminum alloy is subjected to heat treatment at 600° C. for one hour, a rate of decrease in tensile strength after the heat treatment is within 20%.

3 : The aluminum alloy according to claim 1 , wherein the aluminum alloy has a surface having an arithmetic mean roughness Ra of 0.20 μm or less.

4 : The aluminum alloy according to claim 1 , wherein the aluminum alloy has a foil shape having a thickness of 3 μm or more and 40 μm or less.

5 : The aluminum alloy according to claim 1 , wherein the aluminum alloy has a three-dimensional network structure.

6 : A method for manufacturing the aluminum alloy according to claim 1 , the method comprising:
an electrolysis step of conducting molten salt electrolysis by using a molten salt bath prepared by adding an aluminum halide, an additive element-containing compound that contains at least one additive element selected from the group consisting of Zr, Cu, Cr, and Zn, and a smoothing agent to a molten salt to thereby electrodeposit an aluminum alloy on a surface of a substrate, wherein the smoothening agent is at least one selected from the group consisting of 1,10-phenanthroline chloride monohydrate, 1,10-phenanthroline monohydrate, and 1,10-phenanthroline, and a concentration of the smoothing agent in the molten salt bath is a concentration at which a concentration of C in the aluminum alloy is 0.01% by mass or more and 10.0% by mass or less.

7 : The method for manufacturing the aluminum alloy according to claim 6 , the method further comprising a heat treatment step of subjecting the aluminum alloy electrodeposited on the surface of the substrate to heat treatment at a temperature of 250° C. or higher and 500° C. or lower.

8 : The method for manufacturing the aluminum alloy according to claim 6 ,
wherein the molten salt contains at least one molten salt-forming compound selected from the group consisting of alkylimidazolium halides, alkylpyridinium halides, and urea compounds, and a mixing ratio of the aluminum halide to the molten salt-forming compound is in a range of 1:1 to 3:1 on a molar basis.

Assignees

• Sumitomo Electric Industries

Inventors

• Goto Kengo
• Hosoe Akihisa

Classifications

• C25D3/66 Primary

  from melts · CPC title

• C22F1/057

  of alloys with copper as the next major constituent · CPC title

• C22C21/12 Primary

  with copper as the next major constituent · CPC title

• C25C3/06

  of aluminium · CPC title

• C22C21/00

  Alloys based on aluminium · CPC title