A kind of Zr-ti-cr-v multiphase hydrogen storage alloy and its preparation method

A zr-ti-cr-v, hydrogen storage alloy technology, applied in the field of hydrogen storage materials, can solve the problems that few can have both, achieve fast hydrogen absorption rate, increase lattice distortion, and improve hydrogen absorption kinetics performance effect

Active Publication Date: 2020-05-05
江西新节氢能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the researchers were concerned about the AB 2 Extensive studies have been carried out on Zr-based Laves phase hydrogen storage alloys, showing that alloying can improve the hydrogen absorption kinetics and increase the hydrogen absorption capacity, but the two are rarely achieved at the same time.

Method used

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  • A kind of Zr-ti-cr-v multiphase hydrogen storage alloy and its preparation method
  • A kind of Zr-ti-cr-v multiphase hydrogen storage alloy and its preparation method
  • A kind of Zr-ti-cr-v multiphase hydrogen storage alloy and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The design alloy composition is ZrTi 0.2 Cr 0.2 V 2 , The ratio is an atomic ratio; the purity of the Zr, Ti, Cr and V raw materials used in the experiment are 99.4%, 99.97%, 99.7% and 99.5% respectively.

[0028] The preparation process of this embodiment is:

[0029] Step 1, vacuum melting. Put Zr, Ti, Cr and V raw materials into a vacuum arc melting furnace at an atomic ratio of 1:0.2:0.2:2 for melting, fill the melting furnace with argon as a protective atmosphere, and apply magnetic stirring during the melting process to make the ingredients uniform; The solidified ingot is turned up and down, and the alloy ingot is obtained after repeated melting 3 times;

[0030] Step 2, vacuum packaging. Put the obtained alloy ingot into a quartz tube, use argon to purge the inside of the quartz tube, and at the same time evacuate the quartz tube until the vacuum degree reaches 1×10 -3 Complete the sealing of the quartz tube at Pa;

[0031] Step 3, heat treatment. Put th...

Embodiment 2

[0034] The design alloy composition is ZrTi 0.4 Cr 0.1 V 1.8 , The ratio is an atomic ratio; the purity of the Zr, Ti, Cr and V raw materials used in the experiment are 99.4%, 99.97%, 99.7% and 99.5% respectively.

[0035] The preparation process of this embodiment is:

[0036] Step 1, vacuum melting. Put Zr, Ti, Cr and V raw materials into a vacuum arc melting furnace at an atomic ratio of 1:0.4:0.1:1.8 for melting, fill the melting furnace with argon as a protective atmosphere, and apply magnetic stirring during the melting process to make the ingredients uniform; The solidified ingot is turned up and down, and the alloy ingot is obtained after repeated melting 5 times;

[0037] Step 2, vacuum packaging. Put the obtained alloy ingot into a quartz tube, use argon to purge the inside of the quartz tube, and at the same time evacuate the quartz tube until the vacuum degree reaches 1×10 -3 Complete the sealing of the quartz tube at Pa;

[0038] Step 3, heat treatment. Pu...

Embodiment 3

[0041] The design alloy composition is ZrTi 0.6 Cr 0.2 V 1.9 , The ratio is an atomic ratio; the purity of the Zr, Ti and V raw materials used in the experiment are 99.4%, 99.97% and 99.5% respectively.

[0042] The preparation process of this embodiment is:

[0043] Step 1, vacuum melting. Put Zr, Ti, Cr and V raw materials into a vacuum arc melting furnace at an atomic ratio of 1:0.6:0.2:1.9 for melting, fill the melting furnace with argon as a protective atmosphere, and apply magnetic stirring during the melting process to make the ingredients uniform; The solidified ingot is turned up and down, and the alloy ingot is obtained after repeated melting 5 times;

[0044] Step 2, vacuum packaging. Put the obtained alloy ingot into a quartz tube, use argon to purge the inside of the quartz tube, and at the same time evacuate the quartz tube until the vacuum degree reaches 1×10 -3 Complete the sealing of the quartz tube at Pa;

[0045] Step 3, heat treatment. Put the vacuu...

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Abstract

A Zr-Ti-Cr-V multiphase hydrogen storage alloy and a preparation method thereof. The hydrogen storage alloy is composed of Zr, Ti, Cr and V elements, and its atomic ratio is 1:0.2-0.6:0.1-0.6:1.8-2.1. In the present invention, through non-metric ratio composition design and vacuum heat treatment, a composite phase structure with a specific proportion of C15 type Laves phase, V-rich solid solution and Zr-rich solid solution coexists is formed in the alloy. The room temperature hydrogen absorption capacity of the series alloys of the invention can reach 2.80 wt%, and has excellent hydrogen absorption kinetic performance.

Description

technical field [0001] The invention relates to the field of hydrogen storage materials, in particular to a Zr-Ti-Cr-V hydrogen storage alloy. Background technique [0002] The safe and efficient storage of hydrogen is an important part of the development and utilization of hydrogen energy. Hydrogen storage methods include high-pressure gaseous hydrogen storage, liquid hydrogen storage, and hydrogen storage using hydrogen storage materials. Among them, the gaseous hydrogen storage method has a low hydrogen storage density and low safety; the liquid hydrogen storage method has high energy consumption, high cost, and high requirements for the insulation of the storage tank; and the use of hydrogen storage materials to absorb hydrogen through physical or chemical reactions It is an emerging hydrogen storage method. Due to the advantages of high hydrogen storage density, reversible hydrogen absorption and desorption, safety and reliability, hydrogen storage alloys are a type o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02C22F1/02
CPCC22C1/02C22C27/025C22C30/00C22F1/02
Inventor 张云龙李若琳卢雅琳于赟李小平陈逸程亮
Owner 江西新节氢能源科技有限公司
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