Ti-Zr based light-weight high-capacity hydrogen absorption material, and preparation method and application method thereof

A technology of hydrogen absorption material and high capacity, which is applied in the fields of Ti-Zr-based light-weight and high-capacity hydrogen absorption material and its preparation and use, can solve the problems of low hydrogen absorption rate and capacity of alloys, difficult to satisfy, etc., and achieve the hydrogen absorption rate Fast, simple manufacturing process, low effect of hydrogen absorption equilibrium pressure

Active Publication Date: 2015-06-24
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the hydrogen absorption rate and capacity of the above-mentioned alloys are relatively low, and high temperatures above 450°C are required for activation, which is difficult to meet the requirem

Method used

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  • Ti-Zr based light-weight high-capacity hydrogen absorption material, and preparation method and application method thereof
  • Ti-Zr based light-weight high-capacity hydrogen absorption material, and preparation method and application method thereof
  • Ti-Zr based light-weight high-capacity hydrogen absorption material, and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The raw materials are sponge Ti (purity ≥99.6%), sponge Zr (purity ≥99.4%), Cr (purity ≥99.4%), Fe (purity ≥99.4%), V (purity greater than 99.5%), Ce (purity ≥99.0%) ). The chemical composition of the alloy is figure 1The formulation of the middle g point, that is, according to Example 1 in Table 1: Ti, 50wt.%, Zr, 35wt.%, Cr, 3wt.%, Fe, 2wt.%, V, 7wt.%, Ce, 3wt.% .

[0041] The alloy is prepared by vacuum electric arc furnace / vacuum intermediate frequency induction melting method. When the melting temperature reaches 2000~2200℃, the alloy starts to melt. Mold casting, rapid solidification to obtain ingots, the pouring temperature is 1950-2120 °C; the ingots are crushed and ground to make powder, or hydrogenated dehydrogenated to make particles with a sieve size of less than 80 mesh.

[0042] Take about 1 gram of sample and press it into small pieces of Φ10×3mm. According to the GB / T25497-2010 standard, test the relationship between the hydrogen absorption rate of th...

Embodiment 2

[0044] The raw materials are sponge Ti (purity ≥99.6%), sponge Zr (purity ≥99.4%), Cr (purity ≥99.2%), V (purity greater than 99.5%), and Ce (purity ≥99.0%). The chemical composition of the alloy is figure 1 The formulation of point a is according to Example 2 in Table 1: Ti, 52wt.%, Zr, 25wt.%, Cr, 4wt.%, V: 14wt.%, Ce: 5wt.%. Alloy smelting and sample preparation methods are the same as in Example 1, and the hydrogen absorption kinetics test results are as follows: Figure 4 shown.

Embodiment 3

[0046] The raw materials are sponge Ti (purity ≥99.6%), sponge Zr (purity ≥99.4%), Co (purity ≥99.2%), Mo (purity ≥99.9%), V (purity greater than 99.5%), Ce (purity ≥99.0%) ). The chemical composition of the alloy is figure 1 The composition of point b is formulated according to Example 3 in Table 1: Ti, 35wt.%, Zr, 42wt.%, Co, 4wt.%, Mo, 4.2wt.%, V: 12wt.%, Ce: 2.8wt. .%. Alloy smelting and sample preparation methods are the same as in Example 1, and the hydrogen absorption kinetics test results are as follows: Figure 5 shown.

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Abstract

The invention relates to a Ti-Zr based light-weight high-capacity hydrogen absorption material, and a preparation method and an application method thereof. The Ti-Zr based light-weight high-capacity hydrogen absorption material comprises, by weight, 35.0 to 65.0 parts of titanium, 25.0 to 45.0 parts of zirconium, 5.0 to 19.0 parts of a transition metal, and 2.5 to 5.0 parts of a rare earth metal; wherein the transition metal is one or more than two selected from V, Cr, Mn, Fe, Co, Ni, Cu, and Mo, and the rare earth metal is one or more than two selected from La, Ce, and Pr. According to the application method, the Ti-Zr based light-weight high-capacity hydrogen absorption material is heated to 300 to 400 DEG C at vacuum conditions, is subjected to activation for 30 to 60min, and is cooled to an operating temperature for hydrogen absorption, wherein the operating temperature ranges from room temperature to 400 DEG C. The Ti-Zr based light-weight high-capacity hydrogen absorption material possesses following advantages: manufacturing technology is simple; activation temperature is low; hydrogen absorption balance pressure is low; hydrogen absorption capacity is high; and hydrogen absorption speed is high.

Description

technical field [0001] The invention relates to a Ti-Zr-based light-weight and high-capacity hydrogen-absorbing material and its preparation and use method. It can be activated at a minimum temperature of 300-400°C, its working temperature is from room temperature to 400°C, and it has high hydrogen-absorbing capacity under low hydrogen equilibrium pressure. , the hydrogen absorption rate is fast. The material is suitable for many fields such as medium and high temperature solar vacuum tubes and hydrogen purification, and can replace Zr-Co-Re, Zr-V-Fe, barium-based and strontium-based hydrogen-absorbing materials commonly used in vacuum tubes. Background technique [0002] Solar thermal utilization has been widely popularized. In recent years, with the development of medium and high temperature solar thermal technologies such as building energy saving and solar thermal power generation, higher and higher requirements have been put forward for the heat collection efficiency of...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C30/02C22C30/00C22C1/02B22F9/04
Inventor 赵旭山蒋利军刘晓鹏王树茂邱昊辰袁宝龙李志念杨阳叶建华姬江峰
Owner GRIMAT ENG INST CO LTD
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