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Hydrogen isotope storage alloy and preparation method thereof

A technology of hydrogen isotopes and alloys, which is applied in the field of ZrCo-based hydrogen isotope storage alloys with high cycle stability and its preparation, can solve the problem of affecting the cycle life of ZrCo-based alloys, the deterioration of hydrogen absorption kinetics at room temperature, and the decline in hydrogen absorption and desorption capacity, etc. problems, to achieve good cycle and stable kinetic performance, improve the service life of the hydrogen absorption and desorption cycle, and improve the service life

Inactive Publication Date: 2019-09-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Studies have shown that the cycle stability of ZrCo-based alloys is extremely poor, and irreversible disproportionation reactions (2ZrCo+H 2 →ZrCo 2 +ZrH 2 ), which leads to a rapid decline in the effective hydrogen absorption and desorption capacity, and its hydrogen absorption kinetics at room temperature also deteriorates, which affects the cycle life of ZrCo-based alloys

Method used

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  • Hydrogen isotope storage alloy and preparation method thereof
  • Hydrogen isotope storage alloy and preparation method thereof
  • Hydrogen isotope storage alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] According to the above hydrogen isotope storage alloy ZrCo 0.9 Cu 0.1 Chemical formula, calculate the addition amount of Zr, Co, Cu raw materials. Among them, the raw material purity of Zr, Co and Cu used are all above 99%. After the above raw materials are cleaned and dried, they are weighed according to the calculated addition amount. The weighed sample is placed in the water-cooled copper crucible of the magnetic levitation induction melting furnace, and after being evacuated to a vacuum degree of 0.9 Cu 0.1 The hydrogen isotope storage alloy ingot is the hydrogen isotope storage alloy.

[0039] The alloy ingot is conical, with a bottom of 20-30mm, a height of 10-20mm and a weight of 20-30g.

Embodiment 2

[0041] Same as embodiment 1, according to the above-mentioned hydrogen isotope storage alloy ZrCo 0.8 Cu 0.2 Chemical formula, calculate the addition amount of Zr, Co, Cu raw materials. Among them, the raw material purity of Zr, Co and Cu used are all above 99%. After the above raw materials are cleaned and dried, they are weighed according to the calculated addition amount. The weighed sample is placed in the water-cooled copper crucible of the magnetic levitation induction melting furnace, and after being evacuated to a vacuum degree of 0.8 Cu 0.2 The hydrogen isotope storage alloy ingot is the hydrogen isotope storage alloy.

Embodiment 3

[0043] Same as embodiment 1, according to the above-mentioned hydrogen isotope storage alloy ZrCo 0.8 Cu 0.2 Chemical formula, calculate the addition amount of Zr, Co, Cu raw materials. Among them, the raw material purity of Zr, Co and Cu used are all above 99%. After the above raw materials are cleaned and dried, they are weighed according to the calculated addition amount. The weighed sample is placed in the water-cooled copper crucible of the magnetic levitation induction melting furnace, and after being evacuated to a vacuum degree of 0.8 Cu 0.2 Hydrogen isotope storage alloy ingot casting. Subsequent ZrCo 0.8 Cu 0.2 The alloy ingot is cut into broad bean shape, weighing about 10g, and put into a quartz tube with an outer diameter of 17.5mm and an end size of 0.5mm×5mm after cleaning and drying, and placed in a belt throwing furnace, through a mechanical pump and The molecular pump is evacuated to 4×10 -3 After Pa vacuum degree, remelting is carried out under the pr...

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Abstract

The invention relates to a hydrogen isotope storage and supply technology, and discloses a hydrogen isotope storage alloy with high cycling stability and a preparation method thereof. The chemical general formula of the hydrogen isotope storage alloy is ZrCo1-xCux, wherein x is greater than or equal to 0.1 and less than or equal to 0.3. The invention further discloses a preparation method of a hydrogen isotope storage alloy ingot and a thin strip. The hydrogen isotope storage alloy has the advantages that a hydrogen storage alloy has relatively high cycling stability capacity and relatively good cycling stability dynamics, the cycle life of the hydrogen storage alloy is prolonged, the hydrogen storage platform characteristics and thermodynamic characteristics are changed, and a new hydridephase ZrCoHx (x is about 0.6) with a positive cross crystal system CrB-type crystal structure is generated; in addition, the preparation method of the hydrogen isotope storage alloy is simple in process and low in cost, and is especially suitable for storing and material supplying of an ITER hydrogen isotope.

Description

technical field [0001] The invention belongs to the technical field of hydrogen isotope storage and supply, and relates to a ZrCo-based hydrogen isotope storage alloy with high cycle stability and a preparation method thereof. Background technique [0002] With the increasing demand of human beings for energy, the existing primary energy on the earth is unsustainable, and the development of efficient, clean and renewable energy is imminent. [0003] Due to its significant advantages such as high energy specific density, low unit power generation cost, and little influence on factors such as climate and regional resources, nuclear energy is currently in a priority development position in the construction of new energy. The International Thermonuclear Experimental Reactor (ITER) is a major international scientific and technological cooperation project based on magnetic confinement controllable nuclear fusion technology, which uses deuterium-tritium nuclear fusion reaction to r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C16/00C22C1/02B22D11/06
CPCB22D11/0697C22C1/02C22C16/00C22C2202/04
Inventor 陈立新梁赵青肖学章姚振东
Owner ZHEJIANG UNIV
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