ZrCO-based high-entropy intermetallic compounds with stable isomorphic hydrogen absorption/desorption reactions and their preparation and application

A technology of intermetallic compounds and isomorphs, applied in the direction of non-metallic elements, chemical instruments and methods, hydrogen, etc., can solve the problems of low crystal structure stability, cycle capacity decay, etc., and achieve good crystal structure stability and safety High, the effect of avoiding disproportionation reaction

Active Publication Date: 2022-02-18
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above technical problems and the deficiencies in this field, the present invention provides a ZrCo-based high-entropy intermetallic compound with stable isomorphic hydrogen absorption / desorption reaction, starting from the configuration entropy control of the phase, through Adding three kinds of metal elements Nb, Cu, and Ni in a specific ratio and equimolar ratio to each other into the ZrCo matrix solves the problem of cycle capacity fading and crystal structure stability common in ZrCo-based hydrogen isotope storage alloys in the prior art Inferior disadvantages

Method used

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  • ZrCO-based high-entropy intermetallic compounds with stable isomorphic hydrogen absorption/desorption reactions and their preparation and application
  • ZrCO-based high-entropy intermetallic compounds with stable isomorphic hydrogen absorption/desorption reactions and their preparation and application
  • ZrCO-based high-entropy intermetallic compounds with stable isomorphic hydrogen absorption/desorption reactions and their preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0044] The chemical composition of ZrCo-based high-entropy intermetallic compounds is Zr 0.8 Nb 0.2 Co 0.6 Cu 0.2 Ni 0.2 , and calculate the addition amount of Zr, Nb, Co, Cu, and Ni elemental raw materials according to the above chemical formula. Among them, the purity of the elemental raw materials of Zr, Nb, Co, Cu, and Ni all used reached more than 99%. The above-mentioned raw materials are weighed according to the calculated addition amount after cleaning and drying. The weighed raw materials are placed in the water-cooled copper crucible of the magnetic levitation induction melting furnace. After being evacuated and exhausted to a vacuum degree of 0.8 Nb 0.2 Co 0.6 Cu 0.2 Ni 0.2 High-entropy intermetallic compound ingots.

Embodiment 2

[0046] The chemical composition of ZrCo-based high-entropy intermetallic compounds is Zr 0.75 Nb 0.25 Co 0.5 Cu 0.25 Ni 0.25 , and calculate the addition amount of Zr, Nb, Co, Cu, and Ni elemental raw materials according to the above chemical formula. Among them, the purity of the elemental raw materials of Zr, Nb, Co, Cu, and Ni all used reached more than 99%. The above-mentioned raw materials are weighed according to the calculated addition amount after cleaning and drying. The weighed raw materials are placed in the water-cooled copper crucible of the magnetic levitation induction melting furnace. After being evacuated and exhausted to a vacuum degree of 0.75 Nb 0.25 Co 0.5 Cu 0.25 Ni 0.25 High-entropy intermetallic compound ingots.

Embodiment 3

[0048] The XRD patterns of the ingots of Comparative Example 1 and Examples 1-2 are as follows figure 1 It can be found that with the increase of the substitution amount of Nb, Cu and Ni, the main phase changes to the orthorhombic B33 phase, which indicates that the increase of the multi-component substitution is beneficial to change its crystal structure and enhance the orthorhombic B33 phase stability.

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Abstract

The present invention discloses a stable ZRCO base high -entropy metal intervertebral compound with stable -type crystalline -type suction / hydrogen reactions and its preparation methods and applications in hydrogen isotope storage, supply, and recycling.The chemical general formula of the ZRCO base high entropy metal compound is ZR 1‑ x NB x CO 1‑2x CU x NI x Among them, 0 <x ≤0.3; the intervertebral metal compound of the ZRCO high entropy metal has a structural orthogonal crystal B33 phase and a cubic crystal type B2;Orthogonal crystal B33 phase and orthopedic crystal ZRCOH 3 The phase and cubic crystal type B2 phase is related to the cubic crystal ZRCO (H) phase.The method of preparation includes: prepare zr 1‑x NB x CO 1‑ 2x CU x NI x The alloy ingot, the room temperature is damaged by the hydrogen absorption, and the hydrogen absorption powder is obtained, and then the air is dehydrated at 500 ° C. The ZRCO base high entropy metal intervertebral compound with an orthogonal crystal B33 is obtained at 500 ° C.

Description

technical field [0001] The invention relates to the technical field of hydrogen isotope storage and supply, in particular to a ZrCo-based high-entropy intermetallic compound with stable isomorphic hydrogen absorption / desorption reaction and its preparation and application. Background technique [0002] In recent years, in order to alleviate the energy crisis and environmental pollution caused by excessive use of fossil fuels, human beings are urgently looking for a clean, pollution-free and renewable energy source. Fusion energy based on deuterium-tritium nuclear fusion reaction is considered to be one of the main ways for human beings to obtain energy in the future because of its advantages such as huge energy release, rich fuel resources and low radioactivity. The famous fusion reactor, the International Thermonuclear Experimental Reactor (ITER), is a device that releases fusion energy by burning deuterium-tritium plasma. During the actual operation of the fusion reactor,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/02C22C1/02B22F9/02C01B3/00
CPCC22C30/02C22C1/02B22F9/023C01B3/0031Y02E60/32
Inventor 陈立新梁赵青肖学章姚振东戚家程毕嘉鹏
Owner ZHEJIANG UNIV
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