Hydrogen absorbing and releasing alloy material and application thereof

An alloy material, hydrogen absorption and desorption technology, applied in the field of high temperature anti-phase separation vacuum interlayer hydrogen absorption and desorption alloy material, automobile exhaust cold start pollution control or diesel vehicle exhaust particle pollution control, can solve reversible deterioration, pollution control system, Complicated problems, to achieve the effect of improving high temperature stability, simplifying pollution control system, and good high temperature stability

Inactive Publication Date: 2009-10-21
GRIREM ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When necessary, the valve between the two is opened, and the high platform pressure alloy releases hydrogen, and at the same time absorbs the surrounding heat to achieve the purpose of cooling; the hydrogen reaches the low platform pressure alloy and is absorbed, because the alloy absorbs hydrogen and releases heat, so as to realize the purpose of rapid temperature rise of the catalyst , but this app

Method used

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  • Hydrogen absorbing and releasing alloy material and application thereof
  • Hydrogen absorbing and releasing alloy material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Press Ti 0.7 Nb 0.3 Carry out batching, adopt TiNb alloy to obtain TiNb alloy by electric arc melting method, then carry out rapid phase-separation aging test (corresponding to at least 10000 high-temperature hydrogen absorption and desorption cycles) according to the method in Comparative Example 1, the temperature is 600 ℃, the hydrogen pressure is 80 atmospheres, The aging time is 20 hours. It was found that the alloy was still in the original block shape, without phase separation, and the hydrogen absorption and desorption performance lost 23%.

Embodiment 2

[0027] Press Ti 0.8 Mo 0.2 Carry out batching, adopt magnetic suspension smelting method to obtain TiMo alloy, then carry out rapid phase-separation aging (same as embodiment 1), find that the alloy is still in the original block shape, without phase separation, and the hydrogen absorption and desorption performance loses 16%.

[0028] The TiMo alloy surface appearance that embodiment 2 obtains is as figure 1 shown.

Embodiment 3

[0030] Press Zr 0.5 La 0.2 Fe 0.3Carry out batching, adopt arc melting method to obtain ZrLaFe alloy, carry out rapid phase-separation aging (same as embodiment 1) then, find that the alloy is still the original bulk, without phase-separation, hydrogen absorption and desorption performance loss of 21%.

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Abstract

The invention relates to a hydrogen absorbing and releasing alloy material with the formula of A(1-x)Bx, wherein A is at least one of Ti, Zr, Mg and rare-earth RE; B is at least one of Hf, Nb, Cr, Ca, Cu, Ni, Mo, Fe, Co, Al, Mn and Si; x is the mol ratio from 0.05 to 0.90; the rare-earth RE comprises at least one of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; and the usage temperature of the alloy is higher than 200 DEG C. Further, the invention relates to a hydrogen absorbing and releasing alloy material of an anti-phase splitting multicycle vacuum interlayer applied to the pollution control of the tail gas of motor vehicles. The hydrogen absorbing and releasing alloy has overstable capacity of anti-high temperature phase splitting and repeated hydrogen absorbing and releasing processes for ten thousand times and can be used for solving the problem of cold start pollution of the tail gas of vehicles or particle pollution of the tail gas of diesel engine road vehicles.

Description

technical field [0001] The present invention relates to the field of hydrogen storage alloys and the field of vacuum, more specifically, relates to a high-temperature phase-separation-resistant vacuum interlayer hydrogen absorption and desorption alloy material, which is applied to the pollution control of motor vehicle exhaust, and further said to be applied to the control of cold start pollution of automobile exhaust Or diesel vehicle exhaust particulate pollution control. Background technique [0002] A hydrogen storage alloy is a solid solution alloy or an intermetallic compound material that can reversibly absorb and release hydrogen at a certain temperature. Due to the reversible hydrogen absorption and desorption characteristics and hydrogen absorption and desorption thermal effects of hydrogen storage alloys, hydrogen storage alloys are usually used in nickel-metal hydride electrodes, heat pumps, heat exchange, thermal excitation, thermal energy storage, and temperat...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/00
Inventor 崔梅生韩业斌王良士龙志奇黄小卫李红卫
Owner GRIREM ADVANCED MATERIALS CO LTD
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