Yttrium-zirconium-iron-aluminum alloy material, preparation method and application

An aluminum alloy material and aluminum alloy technology, applied in chemical instruments and methods, non-metallic elements, inorganic chemistry, etc., to achieve the effects of lowering dehydrogenation temperature, lowering stability, and stabilizing structure

Inactive Publication Date: 2021-06-04
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the hydride formed by the hydrogen absorption of this kind of rare earth hydrogen storage alloy has high thermal stability, which leads to the hydrogen desorption platform pressure of

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  • Yttrium-zirconium-iron-aluminum alloy material, preparation method and application
  • Yttrium-zirconium-iron-aluminum alloy material, preparation method and application
  • Yttrium-zirconium-iron-aluminum alloy material, preparation method and application

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preparation example Construction

[0033] On the other hand, the preparation method of the yttrium-zirconium-iron-aluminum alloy material provided by the embodiments of the present invention may include the following steps:

[0034] Step S11: Weigh and mix the metal bulk materials of yttrium, zirconium, iron and aluminum according to the ratio of the substances in the general chemical formula, melt at a temperature higher than 1600°C, and obtain an alloy ingot after cooling.

[0035] As can be seen from the foregoing, the general chemical formula of yttrium, zirconium, iron and aluminum is Y 1-x Zr x Fe 2-y Al y , where 0.25

[0036] In one embod...

Embodiment 1

[0050] This embodiment provides a kind of yttrium-zirconium-iron-aluminum alloy material, the chemical general formula of described yttrium-zirconium-iron-aluminum alloy material is Y 0.67 Zr 0.33 Fe 1.7 Al 0.3 , the preparation method of yttrium-zirconium-iron-aluminum alloy material comprises the following steps:

[0051] Step S311, the yttrium block, zirconium block, iron block and aluminum block (purity not less than 99wt.%) according to the general chemical formula Y 0.67 Zr 0.33 Fe 1.7 Al 0.3 The ratio of the amount of material is weighed to take yttrium block, zirconium block, iron block and iron block and mix them uniformly; smelt at 1600 ° C for 5 minutes in an electric arc melting furnace, and obtain an alloy ingot after cooling.

[0052] Step S312: Turn over the alloy ingot obtained, and re-melt and cool, so that the smelting is repeated 5 times. The re-melting was carried out in an electric arc melting furnace at a melting temperature of 1600°C and a melting...

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Abstract

The invention relates to the field of hydrogen storage alloy materials, in particular to an yttrium-zirconium-iron-aluminum alloy material. The chemical general formula of which is Y < 1-x > Zr < x > Fe < 2-y > Al < y >, wherein, 0.25 < x < 0.45, and 0.1 < Y < 0.4. The invention further discloses a preparation method of the yttrium-zirconium-iron-aluminum alloy material. The preparation method comprises the following steps of weighing metal block materials of yttrium, zirconium, iron and aluminum according to the mass ratio of the chemical general formula, mixing, smelting at the temperature of higher than 1600 DEG C, and cooling to obtain an alloy ingot; and placing the obtained alloy cast ingot in an annealing container to be subjected to annealing treatment, and after cooling, crushing the alloy cast ingot into a powder state to obtain the yttrium-zirconium-iron-aluminum alloy material. According to the alloy material, iron and yttrium are partially replaced with the aluminum element with the large atomic radius and the zirconium element with the small atomic radius correspondingly, the prepared yttrium-zirconium-iron-aluminum alloy is of a zirconium-rich phase and yttrium-rich phase double-phase structure, the alloy achieves reversible hydrogen absorption and desorption of the yttrium-rich phase at the room temperature, and the hydrogen storage capacity is obviously improved compared with that of a single yttrium-rich phase.

Description

technical field [0001] The invention relates to the technical field of hydrogen storage alloy materials, in particular to a yttrium-zirconium-iron-aluminum alloy material, a preparation method and an application. Background technique [0002] With the advancement of science and technology and the development of society, countries and regions around the world have adopted clean and renewable primary energy to replace traditional fossil energy such as petroleum and coal in order to solve the harm caused by carbon emissions and polluting gases to the atmospheric environment and human health. . As a clean and efficient secondary energy source, hydrogen energy is an ideal carrier of primary energy, and hydrogen has a wide range of sources. Hydrogen itself is non-toxic, its combustion calorific value is three times that of gasoline, and its combustion product is water. Therefore, hydrogen energy is expected to become An important part of the sustainable energy system of the futur...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C38/14C22C38/06C22C33/04C21D1/26C21D1/773B22F9/04C01B3/00H01M4/38H01M10/30
CPCB22F9/04C01B3/0047C21D1/26C21D1/773C22C30/00C22C33/04C22C38/005C22C38/06C22C38/14H01M4/383H01M10/30Y02E60/10Y02E60/32
Inventor 朱敏王辉黎子鸣曾美琴欧阳柳章刘江文
Owner SOUTH CHINA UNIV OF TECH
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