Preparation of light hydrogen occluding alloy

A hydrogen storage alloy, light-weight technology, applied in the field of hydrogen storage materials, can solve the problem of less hydrogen storage materials, and achieve the effects of low cost, low equipment investment, and simple preparation process

Inactive Publication Date: 2008-12-17
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few scientific reports on the preparation of hydrogen storage materials by amorphous crystallization

Method used

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  • Preparation of light hydrogen occluding alloy
  • Preparation of light hydrogen occluding alloy
  • Preparation of light hydrogen occluding alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The metal Ca particles have a purity of 99.0%; the metal Mg powder has a purity of 99.7% and a particle size of 200 mesh; and the metal Ni flakes have a purity of 99.9%. Press Ca 2 MgNi 9 Alloy Molecular Formula Weigh a certain amount of raw metal (add appropriate burning loss to Ca and Mg), and smelt it twice under 18KW power to obtain a multi-phase alloy. The alloy phase is (CaMg)Ni 3 、(CaMg)Ni 2 and (CaMg) 2 Ni 7 ( figure 2 (a)Ca 2 MgNi 9 (AB 3 type) alloy magnetic levitation melting sample X-ray diffraction pattern). Grind the smelted alloy into a 100 mesh in a mortar and put it into a stainless steel tank, put the stainless steel tank in a planetary ball mill and mill it under argon protection for 48 hours (the ratio of ball to material is 10:1) to obtain an amorphous alloy ( figure 2 (b) Ca 2 MgNi 9 (AB 3 type) X-ray diffraction pattern of the alloy amorphous sample). The amorphous alloy powder is pressed into a φ13×3mm green body in a stainless ste...

Embodiment 2

[0028] The metal Ca particles have a purity of 99.0%; the metal Mg powder has a purity of 99.7% and a particle size of 200 mesh; and the metal Ni flakes have a purity of 99.9%. By (CaMg)Ni 2 Alloy Molecular Formula Weigh a certain amount of raw metal (add appropriate burning loss to Ca and Mg), and smelt it twice under 18KW power to obtain a multi-phase alloy. The alloy phase is (CaMg)Ni 2 , Ca 2 Ni 7 and MgNi 2 ( image 3 (a)(CaMg)Ni 2 (AB 2 type) alloy magnetic levitation melting sample X-ray diffraction pattern). Grind the smelted alloy into a 100 mesh in a mortar and put it into a stainless steel tank, put the stainless steel tank in a planetary ball mill and mill it under argon protection for 48 hours (the ratio of ball to material is 10:1) to obtain an amorphous alloy ( image 3 (b)(CaMg)Ni 2 (AB 2type) X-ray diffraction pattern of the alloy amorphous sample). Amorphous alloy powder is pressed into a φ13×3mm green body in a stainless steel abrasive tool at 30 M...

Embodiment 3

[0030] The metal Ca particles have a purity of 99.0%; the metal La blocks have a purity of 99.5%; the metal Mg powder has a purity of 99.7% and a particle size of 200 mesh; and the metal Ni flakes have a purity of 99.9%. Press (CaLa) 2 MgNi 9 Alloy Molecular Formula Weigh a certain amount of raw material metal (add appropriate burning loss to Ca, La and Mg), and smelt twice under 18KW magnetic levitation to obtain a multi-phase alloy. The alloy phase is (CaLa) 2 MgNi 9 , (CaMg) 2 Ni 7 and CaNi 2 ( image 3 (a)(CaLa) 2 MgNi 9 (AB 3 type) alloy magnetic levitation melting sample X-ray diffraction pattern). Grind the smelted alloy into a 100 mesh in a mortar and put it into a stainless steel tank, put the stainless steel tank in a planetary ball mill and mill it under argon protection for 48 hours (the ratio of ball to material is 10:1) to obtain an amorphous alloy ( image 3 (b)(CaLa) 2 MgNi 9 (AB 3 type) X-ray diffraction pattern of the alloy amorphous sample). Th...

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Abstract

The invention provides a method for preparing light hydrogen-storage alloy, pertaining to the technical field of hydrogen-storage alloy materials. The light hydrogen-storage alloy is Ca-Mg-Ni or La-Mg-Ni series; the preparation method of the light hydrogen-storage alloy comprises the steps that: first, magnetic levitation melting of raw materials is carried out according to the mixture ratio of the alloy; the alloy after being melted is ground into alloy powder of 100 meshes in a glove box; then ball milling is carried out to the alloy powder in a mill pot full of argon gas for 24 to 48 hours, thus obtaining amorphous alloy powder; the amorphous alloy powder is put into a stainless grinding apparatus with constant pressure and then manufactured into a green compact with Phi 13 multiplied 3mm; the green compact is put into a ceramic combustion boat, and then undergoes anneal in a common vacuum annealing furnace; after annealing, a single-phase Ca-Mg-Ni or La-Mg-Ni hydrogen-storage alloy is obtained. The method is mainly used for preparing light Ca-Mg-Ni or La-Mg-Ni hydrogen-storage alloys with high yield and further improving the hydrogen-storage performance of the alloys.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage materials, and in particular relates to a preparation method of a lightweight hydrogen storage alloy. Background technique [0002] With the world energy crisis and environmental deterioration, hydrogen energy, as a new type of clean energy, has attracted more and more attention. Hydrogen storage materials, which are closely related to hydrogen energy technology, have attracted much attention from various countries. People have carried out extensive research on the composition design, crystal structure, hydrogen storage performance and mechanism, and preparation technology of hydrogen storage materials. Among them, composition design and preparation technology are the key to the development and utilization of excellent hydrogen storage alloys. The goal of the development of hydrogen storage materials is to explore a new generation of hydrogen storage materials with high hydrogen storage ...

Claims

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Application Information

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IPC IPC(8): C22C1/04
Inventor 张庆安斯庭智柳东明
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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