A kind of preparation method of titanium-aluminum alloy material and titanium-aluminum alloy material and its application

A technology of titanium-aluminum alloy and aluminum alloy powder, which is applied in the field of titanium alloy, powder metallurgy, and aluminum alloy. It can solve the problems of difficulty in subsequent runner processing, poor forming processability, and low cost of aluminum alloy, and achieves improved direct diffusion and Solid solution effect, improvement of substrate performance, and effect of improving corrosion resistance

Active Publication Date: 2020-12-15
HUNAN INSTITUTE OF ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, titanium and titanium alloys have a shape memory effect, and subsequent flow channel processing is difficult, and stainless steel has a poisonous effect of Cr ions on catalysts, etc. Therefore, it has become a material to develop a cost-controllable, excellent processing and corrosion resistance for bipolar plate materials. One of the trends in the development of the industry
[0003] Aluminum alloy has low cost, excellent mechanical properties and formability, but poor corrosion resistance, while titanium alloy has good corrosion resistance but poor formability. Bipolar plate and its preparation method

Method used

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  • A kind of preparation method of titanium-aluminum alloy material and titanium-aluminum alloy material and its application
  • A kind of preparation method of titanium-aluminum alloy material and titanium-aluminum alloy material and its application
  • A kind of preparation method of titanium-aluminum alloy material and titanium-aluminum alloy material and its application

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Experimental program
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Effect test

Embodiment 1

[0044] This embodiment provides a preparation method of a bipolar plate titanium-aluminum alloy material for a proton exchange membrane fuel cell:

[0045] (1) Preparation of materials: Take commercial 6061 aluminum alloy powder and pure titanium powder; take aluminum and titanium powder according to the mass ratio of 7:3 to form aluminum titanium powder Ⅰ; take aluminum and titanium powder according to the mass ratio of 5:5 to form aluminum titanium powder II; take aluminum Titanium powder is composed of aluminum titanium powder III according to the mass ratio of 3:7;

[0046] (2) Ball milling pretreatment: After the commercial 6061 aluminum alloy powder, pure titanium powder, aluminum titanium powder Ⅰ, aluminum titanium powder Ⅱ and aluminum titanium powder Ⅲ are mechanically alloyed in a ball mill, respectively, they are mechanically alloyed in a ball mill respectively. Add polyethylene resin to aluminum-titanium powder Ⅰ, aluminum-titanium powder Ⅱ, aluminum-titanium powd...

Embodiment 2

[0059] This embodiment provides a preparation method of a bipolar plate titanium-aluminum alloy material for a proton exchange membrane fuel cell:

[0060] (1) Preparation of materials: Take commercial 6061 aluminum alloy powder and pure titanium powder; take aluminum and titanium powder according to the mass ratio of 7:3 to form aluminum titanium powder Ⅰ; take aluminum and titanium powder according to the mass ratio of 5:5 to form aluminum titanium powder II; take aluminum Titanium powder is composed of aluminum titanium powder III according to the mass ratio of 3:7;

[0061] (2) Ball milling pretreatment: the commercial 6061 aluminum alloy powder, pure titanium powder, aluminum-titanium powder I, aluminum-titanium powder II and aluminum-titanium powder III are separately mechanically alloyed in a ball mill; Add polyethylene resin to titanium powder Ⅰ, aluminum titanium powder Ⅱ, aluminum titanium powder Ⅲ, 6061 aluminum alloy powder, and pure titanium powder, and mix evenly...

Embodiment 3

[0070] This embodiment provides a preparation method of a bipolar plate titanium-aluminum alloy material for a proton exchange membrane fuel cell:

[0071] (1) Preparation of materials: Take commercial 6061 aluminum alloy powder and pure titanium powder; take aluminum and titanium powder according to the mass ratio of 7:3 to form aluminum titanium powder Ⅰ; take aluminum and titanium powder according to the mass ratio of 5:5 to form aluminum titanium powder II; take aluminum Titanium powder is composed of aluminum titanium powder III according to the mass ratio of 3:7;

[0072] (2) Ball milling pretreatment: the commercial 6061 aluminum alloy powder, pure titanium powder, aluminum-titanium powder I, aluminum-titanium powder II and aluminum-titanium powder III are separately mechanically alloyed in a ball mill; Add polyethylene resin to titanium powder Ⅰ, aluminum titanium powder Ⅱ, aluminum titanium powder Ⅲ, 6061 aluminum alloy powder, and pure titanium powder, and mix evenly...

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Abstract

The invention discloses a preparation method of a titanium-aluminum alloy material, the titanium-aluminum alloy material and its application, comprising: taking commercial 6061 aluminum alloy powder, the particle size of the alloy powder is 180-200 mesh; pure titanium powder, the particle size is 180 mesh ~200 meshes; take aluminum-titanium powder according to the mass ratio of 7:3 to form aluminum-titanium powder I; take aluminum-titanium powder according to the mass ratio of 5:5 to form aluminum-titanium powder II; take aluminum-titanium powder according to the mass ratio of 3:7 to form aluminum-titanium powder Ⅲ; ball milling pretreatment; molding; preparation of titanium-aluminum alloy material matrix; micro-arc oxidation treatment on the surface of the bipolar plate matrix to obtain a surface with nanoporous structure; preparation of titanium-aluminum alloy material. The invention provides a titanium-aluminum alloy material. The bipolar plate of a proton exchange membrane fuel cell is directly pressed into shape, and flow channels are directly prepared during the forming process, which reduces subsequent processing procedures and further improves the corrosion resistance and performance of the titanium-aluminum alloy material. Stability in PEMFCs working environment.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, titanium alloys and powder metallurgy, and specifically relates to a preparation method of a titanium-aluminum alloy material, a titanium-aluminum alloy material and applications thereof. Background technique [0002] Bipolar plates for proton exchange membrane fuel cells (PEMFCs) should have high corrosion resistance, low interface resistivity, good mechanical strength, hydrophobicity and stability in the working environment of PEMFCs. Traditional carbon-based bipolar plates are still widely used, but their strength is not high, especially in automobiles or other equipment involving high-frequency mechanical vibrations, which are easily damaged. Therefore, the research and application of titanium and stainless steel materials with high strength and stable performance as bipolar plates have attracted widespread attention and become one of the key development directions of major new energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/04B22F3/17B22F7/02C25D11/04C25D11/26H01M8/0208H01M8/10C09D181/02C09D161/16C09D5/24C09D5/08
CPCB22F9/04B22F3/17B22F7/02C25D11/026C25D11/024C25D11/04C25D11/26H01M8/0208H01M8/10C09D181/02C09D161/16C09D5/24C09D5/08B22F2003/175B22F2999/00B22F2009/043C08K2201/001B22F1/10B22F2207/01C08K3/04C08K7/00Y02E60/50
Inventor 高平平伍小波彭小敏陈爽吴安如
Owner HUNAN INSTITUTE OF ENGINEERING
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