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Amorphous state hydrogen absorption alloy having mechanical property and preparation method thereof

A technology of hydrogen-absorbing alloy and amorphous state, which is applied in the field of amorphous hydrogen-absorbing alloy with mechanical properties and its preparation, which can solve the problems of high-temperature environment, poor mechanical properties, and pulverization of porous materials.

Inactive Publication Date: 2012-03-21
SHANGHAI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, hydrogen has been widely used as a green energy, especially in the field of aerospace, and titanium porous materials are now mostly used to absorb hydrogen. The problems faced are: 1. The activation temperature is too high, causing a high temperature environment for the system; 2. Absorption The porous material is pulverized after hydrogenation, and the mechanical properties are poor; 3. The powder pollutes the vacuum environment
The types of amorphous hydrogen-absorbing alloys currently reported in the literature are: Mg 2 Ni type, Zr 60 Al 10 Ni 30 And Zr-Al-Ni-Cu, but its hydrogen absorption temperature is greater than 200 ° C, and it is easy to pulverize after hydrogen absorption

Method used

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  • Amorphous state hydrogen absorption alloy having mechanical property and preparation method thereof
  • Amorphous state hydrogen absorption alloy having mechanical property and preparation method thereof
  • Amorphous state hydrogen absorption alloy having mechanical property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The general chemical formula of amorphous hydrogen-absorbing alloy is: (ZrTi) 0.5 (Ni 0.6 Cr 0.1 m x ) 2.3 Where: M = V, x = 0.1, constitute (ZrTi) 0.5 (Ni 0.6 Cr 0.1 V 0.1 ) 2.3 alloy, the specific steps are as follows:

[0021] A. Calculate the mass ratio of Zr, Ti, Ni, Cr, and V according to the chemical formula for batching. The mass percentage of raw materials is 99.99% for Zr, Ti, and Ni, 99.25% for Cr, and 99.94% for V.

[0022] B. Put the raw materials in a vacuum arc melting furnace, vacuumize to 3×10-3Pa, feed Ar (argon) gas to 0.05KPa, and then vacuumize to 3×10-3Pa -3 Pa, then fill it with Ar (argon) gas to atmospheric pressure, and smelt it 4 times to make the alloy mix evenly, and turn the ingot every time it is smelted. Obtained in crystalline state (ZrTi) 0.5 (Ni 0.6 Cr 0.1 V 0.1 ) 2.3 alloy ingot.

[0023] C. Put a small alloy block (about 6g) into a quartz tube with an outer diameter of 14mm and an inner diameter of 11mm with a small ho...

Embodiment 2

[0027] This embodiment is basically the same as Embodiment 1, the special feature lies in the general chemical formula of the amorphous hydrogen-absorbing alloy: (ZrTi) 0.5 (Ni 0.6 Cr 0.1 m x ) 2..3 Middle: M = V, x = 0.3, composition (ZrTi) 0.5 (Ni 0.6 Cr 0.1 V 0.3 ) 2.3 alloy, the specific steps are as follows:

[0028] A. Calculate the mass ratio of Zr, Ti, Ni, Cr, and V according to the chemical formula for batching. The mass percentage of raw materials is 99.99% for Zr, Ti, and Ni, 99.25% for Cr, and 99.94% for V.

[0029] B. Put the raw material in the vacuum arc melting furnace, and evacuate to 3×10 -3 Pa, pass Ar (argon) gas to 0.05KPa, then vacuumize to 3×10 -3 Pa, then fill it with Ar (argon) gas to atmospheric pressure, and smelt it 4 times to make the alloy mix evenly, and turn the ingot every time it is smelted. Obtained in crystalline state (ZrTi) 0.5 (Ni 0.6 Cr 0.1 V 0.3 ) 2.3 alloy ingot.

[0030] C. Put a small alloy block (about 6g) into a qu...

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Abstract

The invention relates to an amorphous state hydrogen absorption alloy having a mechanical property and a preparation method thereof. A chemical general expression of the amorphous state hydrogen absorption alloy is (ZrTi)0.5(Ni0.6Cr0.1Mx)2.3 to 3, wherein M is one or more of cobalt (Co), chromium (Cr), manganese (Mn), vanadium (V), iron (Fe), dysprosium (Dy) and Erbium (Er), and x is more than or equal to 0.1 and is less than or equal to 0.3. The method comprises the following steps that: proportioning: according to the weight percent of each ingredient in the chemical formula (ZrTi)0.5(Ni0.6Cr0.1Mx)2.3 to 3. Smelting: the ingredients are uniformly smelted through vacuum arc melting or vacuum sensing melting under the protection of argon to be quickly cooled and produced into crystalline alloy cast ingot. Melt-spinning: the cast ingot is broken into small blocks, the small blocks are arranged inside a silica tube with the bottom part having a small hole and with the outer diameter of 14mm and the inner diameter of 11mm to be spun in a vacuum melt-spinning furnace at a rotation speed of 30 to 45m / s to obtain the amorphous state hydrogen absorption alloy. The amorphous alloy has the characteristics that the activation temperature is low (less than or equal to 200 DEG C), the hydrogen can be absorbed under the room temperature, and the amorphous alloy is free from being pulverized after absorbing the hydrogen, and the amorphous state hydrogen absorption alloy is particularly suitable for a hydrogen absorption device which is difficult to replace the alloy.

Description

technical field [0001] The invention relates to an alloy mainly composed of zirconium, titanium, chromium and nickel and a small amount of transition elements added, and a preparation method of the amorphous alloy. Background technique [0002] At present, hydrogen has been widely used as a green energy, especially in the field of aerospace, and titanium porous materials are now mostly used to absorb hydrogen. The problems faced are: 1. The activation temperature is too high, causing a high temperature environment for the system; 2. Absorption The porous material is pulverized after hydrogenation, and the mechanical properties are poor; 3. The powder pollutes the vacuum environment. Therefore, it is urgent to study a hydrogen absorbing alloy with low activation temperature, good mechanical properties without pulverization after absorbing hydrogen. So far, the hydrogen-absorbing alloys that have been practically used mainly include Mg-based alloys, rare earth-based alloys, Z...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00
Inventor 黄健向杰曾智胡慧敏戴家瑜林传富侯雪玲林根文张勇
Owner SHANGHAI UNIV
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