Method for enhancing performance of LaNi4.8Al0.2 alloy to resist CO, CO2 and air poison and anti-pulverization performance of alloy

A technology of CO2 and alloy powder, applied in the direction of coating, etc., can solve the problems of poor anti-powdering ability, achieve the effects of increasing viscosity, shortening the time of process preparation, and improving production efficiency

Active Publication Date: 2015-01-28
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

[0008] The object of the present invention is to provide a kind of reinforced LaNi 4.8 Al 0.2 Alloy anti-CO, CO 2 , air poisoning and anti-powder

Method used

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  • Method for enhancing performance of LaNi4.8Al0.2 alloy to resist CO, CO2 and air poison and anti-pulverization performance of alloy
  • Method for enhancing performance of LaNi4.8Al0.2 alloy to resist CO, CO2 and air poison and anti-pulverization performance of alloy
  • Method for enhancing performance of LaNi4.8Al0.2 alloy to resist CO, CO2 and air poison and anti-pulverization performance of alloy

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Embodiment

[0061] The present invention is mainly used for LaNi 4.8 Al 0.2 The alloy is modified to enhance its resistance to CO, CO 2 , Air poisoning and anti-powdering properties. Such as figure 1 Shown, the present invention is to LaNi 4.8 Al 0.2 The process flow of alloy powder modification can be divided into the preparation of LaNi 4.8 Al 0.2 Alloy powder, sieved LaNi 4.8 Al 0.2 Alloy powder, preparing silica sol, wrapping LaNi 4.8 Al 0.2 There are several major steps of alloy powder and heating and drying. The realization process of each major step is as follows:

[0062] Preparation of LaNi 4.8 Al 0.2 Alloy powder

[0063] The present invention can adopt existing technology to prepare LaNi 4.8 Al 0.2 Alloy powder, then it is modified, also can adopt the technology that the present invention designs to prepare LaNi 4.8 Al 0.2 Alloy powder, and then modify it. LaNi prepared by the process of the present invention 4.8 Al 0.2 alloy powder, and cooperate with other...

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Abstract

The invention discloses a method for enhancing the performance of LaNi4.8Al0.2 alloy to resist CO, CO2 and air poison and the anti-pulverization performance of the alloy, which comprises the steps of S1: preparing LaNi4.8Al0.2 alloy powder; S2: sieving the LaNi4.8Al0.2 alloy powder; S3: mixing ethyl alcohol with deionized water to obtain a mixed solution; S4: adding concentrated hydrochloric acid to adjust the pH value and obtain a first mixture; S5: mixing tetraethoxysilane with ethyl alcohol to obtain a second mixture; S6: mixing the first mixture with the second mixture to obtain a third mixture; S7: standing, and heating the third mixture to volatilize the ethyl alcohol; S8: adding hydrophilic gaseous phase silicon dioxide to the third mixture so as to obtain a silicon dioxide sol; S9: adding the LaNi4.8Al0.2 alloy powder to the silicon dioxide sol so as to obtain paste; S10: heating and drying the paste. According to the method disclosed by the invention, the problem that the LaNi4.8Al0.2 alloy is poor in anti-pulverization performance and poor in anti-poison capability is solved, the use stability of the LaNi4.8Al0.2 alloy is enhanced, and the service life of the LaNi4.8Al0.2 alloy is prolonged.

Description

technical field [0001] The present invention relates to a kind of LaNi 4.8 Al 0.2 The modification method of alloy surface, what specifically relate to is a kind of reinforced LaNi 4.8 Al 0.2 Alloy anti-CO, CO 2 , Air poisoning and anti-powdering performance. Background technique [0002] La-Ni-Al series hydrogen storage alloys have the advantages of easy activation, fast hydrogen absorption and desorption, stable cycle performance, and strong helium fixation ability, and are widely used in hydrogen isotope storage. When using La-Ni-Al series alloys to store tritium, because it can make the He produced by the decay of tritium 3 Retained in the crystal lattice, it will not be released with the dissociation of tritium, and pure tritium can be released, so La-Ni-Al series alloys are often used as the main material for tritium storage. [0003] However, in practical applications, there are also some problems to be solved in La-Ni-Al series alloys. For example, when hydrog...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F9/04
Inventor 钱晓静黄国强邓潇君张志黄火根丁海成刘卫东
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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