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AB5 type rare earth hydrogen storage alloy for tritium storage and preparation method of AB5 type rare earth hydrogen storage alloy

A technology of hydrogen storage alloy and rare earth, which is applied in the field of hydrogen storage alloy, can solve the problems of raw material cost increase, and achieve the effects of reduced manufacturing cost, fast hydrogen absorption and desorption speed, and small hysteresis

Active Publication Date: 2015-04-29
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rising price of rare earths, the cost of raw materials has increased significantly

Method used

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  • AB5 type rare earth hydrogen storage alloy for tritium storage and preparation method of AB5 type rare earth hydrogen storage alloy
  • AB5 type rare earth hydrogen storage alloy for tritium storage and preparation method of AB5 type rare earth hydrogen storage alloy
  • AB5 type rare earth hydrogen storage alloy for tritium storage and preparation method of AB5 type rare earth hydrogen storage alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] carry out La 0.9 Mg 0.1 Ni 4.25 al 0.75 For the smelting of hydrogen storage alloys, raw material metals with a purity of 99.9% are selected, and the burning loss of La and Al is compensated by 2%, and the burning loss of Mg is compensated by 15%. Other materials do not need to be compensated due to small burning losses. The Ni raw material is composed of a foil material and a bulk material, and other metal raw materials are all bulk materials. The amount of foil material is enough to completely wrap the Mg block, and the remaining Ni metal is made of block material. Put the prepared La, Ni (lump) and Al into the water-cooled copper crucible in the vacuum magnetic levitation induction melting furnace, among which La is placed at the bottom of the water-cooled copper crucible, then Al is placed, and Ni (lump) is placed on the top ). In addition, after wrapping the Mg block with Ni foil, put it into the holding bottle in the vacuum magnetic levitation induction melti...

Embodiment 2

[0033] carry out La 0.8 Mg 0.2 Ni 4.25 al 0.75 For the smelting of hydrogen storage alloys, the raw material metals with a purity of 99.5% are selected, and the burning loss of La and Al is compensated by 2%, and the burning loss of Mg is compensated by 14%. The Ni raw materials are composed of foil and block materials respectively. Other metal raw materials are blocks. The amount of foil material is enough to completely wrap the Mg block, and the remaining Ni metal is all made of block material. Put the prepared La, Ni (block), and Al into the water-cooled copper crucible, among which La is placed at the bottom of the water-cooled copper crucible, then Al is placed, and Ni (block) is placed on the top. In addition, after wrapping the Mg block with Ni foil, put it into the holding bottle in the vacuum magnetic levitation induction melting furnace. Mechanical pump and molecular pump are used to evacuate the furnace cavity of the vacuum magnetic levitation induction melting...

Embodiment 3

[0037] carry out La 0.9 Mg 0.1 Ni 4.25 mn 0.75 For the smelting of hydrogen storage alloys, the raw material metal with a purity of 99.95% is selected, and the burning loss of La is compensated by 2%, the burning loss of Mn is compensated by 5%, and the burning loss of Mg is compensated by 12%. It is composed of foil and block, and the rest of the metal materials are made of block. The amount of Ni foil is enough to completely wrap the Mg block, and the remaining Ni metal is all made of block material. Put the prepared La, Ni (block), and Mn into the water-cooled copper crucible, among which Mn is placed at the bottom of the water-cooled copper crucible, then La is placed, and Ni (block) is placed on the top. In addition, after wrapping the Mg block with Ni foil, put it into the holding bottle in the vacuum magnetic levitation induction melting furnace. Mechanical pump and molecular pump are used to evacuate the furnace cavity of the vacuum magnetic levitation induction m...

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Abstract

The invention discloses an AB5 type rare earth hydrogen storage alloy for tritium storage in the field of hydrogen storage alloys and a preparation method of the AB5 type rare earth hydrogen storage alloy. The general formula of the composition of the alloy is La[1-x]MgxNi[5-y]My, wherein M refers to Mn or Al, x is more than 0 and less than or equal to 0.2, and y is more than 0 and less than or equal to 1.2. The hydrogen storage alloy is prepared by the following steps: smelting in three steps adopting a vacuum levitation induction melting furnace and adopting a method of coating Mg blocks with Ni foil according to space placement sequence of raw material metals in a water cooled copper crucible; and finally, encapsulating the metals in a quartz tube, performing heat treatment at a high temperature of 900-1100 DEG C for 4-10 hours, and performing furnace cooling, thereby obtaining the product. The alloy production method is simple, small in Mg volatilization amount, stable in components, easy to activate, low in platform pressure and slight in hydrogen absorption and desorption lag, has good hydrogen absorption and desorption dynamic performances and is suitable for tritium storage.

Description

technical field [0001] The present invention relates to an AB 5 type metal hydrogen storage material, providing an AB suitable for tritium storage 5 The invention discloses a type rare earth hydrogen storage alloy and a preparation method thereof, belonging to the field of hydrogen storage alloys. Background technique [0002] Tritium is a radioactive isotope of hydrogen, and its own decay nuclear reaction is: T→ 3 He+β, where E βmax =18.6MeV, E β =5.7keV, T 1 / 2 =12.33a, belongs to low toxicity radioactive isotope. Since it was discovered in 1934, people have carried out a lot of in-depth research work on its physical and chemical properties, as well as application technology. At present, tritium has become one of the most widely used nuclides in the field of nuclear science and technology. Technologies such as tritium targets for neutron generators, tritium ignition electrodes for tritium-type TR tubes, tritium tracers, and tritium light sources have been quite ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/02C22F1/10
Inventor 程宏辉吕丽君韩兴博刘卫李晓林秦康生
Owner YANGZHOU UNIV
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