Hydrogen-storage-type zirconium-chromium (Zr-Cr) alloy material

Abstract

The invention discloses a hydrogen-storage-type zirconium-chromium (Zr-Cr) alloy material which comprises the following main components by mass percent: 38.0% to 40.0% of Zr, 40.0% to 42.0% of Cr, 3.6% to 3.8% of Fe and 3.8% to 4.0% of Mn. The material further comprises the following secondary components by mass percent: 1.8% to 2.0% of Ni, 1.5% to 1.7% of Ti, 2.2% to 2.4% of Co, 2.4% to 2.6% of V, 1.3% to 1.5% of Ta, 1.0% to 1.2% of Mg, 0.9% to 1.1% of La and 0.4% to 0.6% of Al. Due to the adoption of the mode, the hydrogen storage capacity of the material is improved; and the hydrogen absorption / release speed of the material is accelerated. Therefore, the material has the good hydrogen storage performance at a high temperature and a room temperature, and can be used for absorbing and releasing the hydrogen largely, fast and efficiently.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a hydrogen storage type zirconium-chromium alloy material. Background technique [0002] Hydrogen storage materials are materials that can rapidly absorb hydrogen at a certain temperature and hydrogen pressure, and can release hydrogen when the hydrogen pressure is properly heated or reduced. Most of them are some transition metals, alloys or intermetallic compounds that are easy to interact with hydrogen. Due to the special crystal structure of these metal materials, hydrogen atoms can easily enter the interstices of their crystal lattices and form metal hydrides with them. Its hydrogen storage capacity can reach 1000 to 1300 times the volume of the metal itself. Hydrogen is weakly bound to these metals, and is released from the metal upon heating and changing the hydrogen pressure. This absorption and release of hydrogen in metals depends on the phase equilibrium relationship ...

AI Technical Summary

Problems solved by technology

[0003] The common hydrogen storage materials currently used need to be heated to a certain temperature to absorb and release hydrogen, but it is difficult to activate at room temperature, so the hydrogen storage characteristics are poor, and the hydrogen absorption and release speed is slow.