Aluminum conductive member and method for producing same

Patent metadata

Field	Value
Publication number	US-9828689-B2
Application number	US-201414758837-A
Country	US
Kind code	B2
Filing date	Jan 24, 2014
Priority date	Feb 12, 2013
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

Provided are an aluminum conductive member that includes an electrical connection portion excellent in conductivity and rust resistance and an electrical insulation portion excellent in long-term durability, chemical resistance, and the like, and can be manufactured at low cost, and a method of manufacturing the same. Specifically, provided are an aluminum conductive member, including: an aluminum conductive base material formed of an aluminum material including aluminum or an aluminum alloy; an electrical connection portion formed in a region of the aluminum conductive base material, the electrical connection portion having a surface coated with a conductive oxidation preventing film and being used as a terminal; and an electrical insulation portion formed in a region of the aluminum conductive base material other than the region in which the electrical connection portion is formed, the electrical insulation portion being coated with an anodic oxide film, and a method of manufacturing the same.

First claim

The invention claimed is:

1. A method of manufacturing an aluminum conductive member the method comprising the steps of:
providing an aluminum conductive base material comprising aluminum or an aluminum alloy;
subjecting an entire surface of the aluminum conductive base material to an anodic oxidation treatment so that an anodic oxide film, as an electrical insulation portion, is formed on the aluminum conductive base material;
partially removing the anodic oxide film from the aluminum conductive base material to form a region to serve as an electrical connection portion; and
coating a conductive coating agent for preventing oxidation to the region in which the anodic oxide film is removed to form a conductive oxidation preventing film on the surface of the aluminum conductive base material, so that the electrical connection portion coated with the conductive oxidation preventing film is formed, wherein
the conductive coating agent for preventing oxidation is a conductive coating agent obtained by mixing conductive powder into grease or by adding a conductive filler and an oxidation preventing agent to a binder resin.

2. The method of manufacturing an aluminum conductive member according to claim 1 , wherein the anodic oxide film formed on the surface of the aluminum conductive base material is removed by polishing treatment.

3. A method of manufacturing an aluminum conductive member the method comprising the steps of:
providing an aluminum conductive base material comprising aluminum or an aluminum alloy;
forming a protective film on a surface of aluminum conductive base material in a region to serve as an electrical connection portion;
subjecting a region of the aluminum conductive base material other than the region in which the protective film is formed to anodic oxidation treatment to form the anodic oxide film, as an electrical insulation portion, on the surface of the aluminum conductive base material;
removing the protective film from the surface of the aluminum conductive base material; and
coating a conductive coating agent for preventing oxidation to the region to serve as the electrical connection portion to form a conductive oxidation preventing film on the surface of the aluminum conductive base material, so that the electrical connection portion coated with the conductive oxidation preventing film is formed, wherein
the conductive coating agent for preventing oxidation is a conductive coating agent obtained by mixing conductive powder into grease or by adding a conductive filler and an oxidation preventing agent to a binder resin.

Assignees

• Nippon Light Metal Co

Inventors

• Ookubo Manabu

Classifications

• C25D11/04 Primary

  of aluminium or alloys based thereon · CPC title

• H01B3/10

  metallic oxides (ceramics H01B3/12) · CPC title

• H01B13/06

  Insulating conductors or cables (H01B13/32 takes precedence) · CPC title

• H01B13/0036

  Details · CPC title

• C25D11/022

  Anodisation on selected surface areas · CPC title