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Hydrogen permeation alloy and a method of manufacturing the same

An alloy and hydrogen permeable technology, applied in separation methods, chemical instruments and methods, methods for reacting gas media with gas media, etc., can solve problems such as lack of hydrogen permeability, and achieve shortened length and excellent hydrogen permeability Effect

Inactive Publication Date: 2007-04-04
THE JAPAN STEEL WORKS LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] However, the above-mentioned Nb-Ti-Co alloys do not have sufficient hydrogen permeability and must be improved

Method used

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  • Hydrogen permeation alloy and a method of manufacturing the same
  • Hydrogen permeation alloy and a method of manufacturing the same
  • Hydrogen permeation alloy and a method of manufacturing the same

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Embodiment Construction

[0027] The hydrogen permeable alloy of the present invention is a multiphase hydrogen permeable alloy including a phase responsible for hydrogen permeability and a phase responsible for resistance to hydrogen embrittlement. The types of these phases are not particularly limited, but are generally Nb-Ti-Co-based alloys in which the phase responsible for hydrogen permeability is the (Nb,Ti) phase and the phase responsible for hydrogen embrittlement resistance is the CoTi phase. Regarding the quantitative ratio of the Nb-Ti-Co alloy, the present invention is not particularly limited, and as a representative example, it can be proposed to use the general formula Nb x Ti (100-x-y) co y (here x≤70, 20≤y≤50, x+y<100 (mol%)) represents the alloy.

[0028] The relationship between the above quantitative ratios and physical properties will be briefly described below. First, when the Nb content exceeds the range defined above, hydrogen embrittlement tends to occur. Therefore, the Nb ...

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Abstract

In a multiphase hydrogen permeation alloy comprising a phase in charge of hydrogen permeation and a phase in charge of hydrogen embrittlement resistance , a structure in which the phase in charge of hydrogen permeability is continuously interconnected and in which more pref erably the growth direction of the aforementioned phase in charge of hydrogen permeation lies aligned in the thickness direction of the permeation membrane. As the hydrogen permeation alloy, an Nb-Ti-Co alloy is exemplified, wherein the phase in charge of hydrogen permeability is made of an (Nb, Ti) phase and the aforementioned phase in charge of hydrogen embrittlement resistance is made of a CoTi phase. By virtue of the fact that the growth direction of the phase in charge of hydrogen permeation lies aligned in the thickness direction of the permeation membrane, the hydrogen permeation pass length becomes short to give further improved hydrogen permeation property.

Description

[0001] This application is based on Japanese Patent Application No. 2005-277343 incorporated herein by reference. technical field [0002] The present invention relates to a hydrogen permeable alloy, which is used for a hydrogen permeable membrane used for separating and purifying hydrogen, and to a manufacturing method thereof. Background technique [0003] High-purity hydrogen is used in the production of semiconductors, optical fibers, and pharmaceuticals, and its use is increasing every year. Also, hydrogen is attracting social attention recently as a fuel for fuel cells. If fuel cells are used on a large scale in the future, a large amount of high-purity hydrogen will be required. Therefore, development of a method capable of producing large amounts of high-purity hydrogen at low cost is desired. [0004] Methods of mass production of hydrogen include (1) a first method based on electrolysis of water using non-fossil resources and (2) a second method based on steam re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02
CPCC22C30/00Y10S55/05B01D53/228B01D69/141B01D71/022B01D67/0072C01B3/503B01D2325/021B01D2325/20C22C27/02B01D71/0221
Inventor 佐佐木刚兜森俊树青木清石川和宏
Owner THE JAPAN STEEL WORKS LTD
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