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A kind of preparation method of hydrogen storage magnesium alloy

A magnesium alloy and hydrogen storage technology, which is applied in the field of metal material processing, can solve the problems of limiting the large-scale application of hydrogen storage magnesium alloys, low production efficiency of hydrogen storage magnesium alloys, and limited quantity of hydrogen storage magnesium alloys, so as to improve hydrogen absorption and desorption Kinetics, increase in the number of single smelting, and the effect of improving pouring efficiency

Active Publication Date: 2022-05-27
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to vacuuming involved in the preparation process, vacuum melting equipment is usually small in size, and the number of hydrogen storage magnesium alloys that can be prepared at a time is limited, usually less than 50Kg, resulting in low production efficiency and high production costs of hydrogen storage magnesium alloys, which limits storage capacity. Large-scale application of magnesium hydrogen alloy

Method used

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  • A kind of preparation method of hydrogen storage magnesium alloy
  • A kind of preparation method of hydrogen storage magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In this example, 300 kg of Mg-15Ni-Na hydrogen-storage magnesium alloys are prepared at a time by using the preparation method of hydrogen-storage magnesium alloys.

[0028] The specific method is as follows:

[0029] Step 1: Fusion of magnesium alloys.

[0030] In atmospheric environment, preheat 45Kg pure nickel sheet at 200℃ for 3h; put 255Kg pure magnesium into 300Kg crucible with 0.1% SF 6 and 99.9%CO 2 The melting is carried out under the protective atmosphere of the mixed gas. After the pure magnesium is melted, the melt is heated to 700-740 ° C, and the preheated pure nickel sheet is added; after the pure nickel is melted, the magnesium alloy melt is heated to 720-740 ° C. Let stand.

[0031] Step 2: Deterioration of sodium salts.

[0032] at 0.1% SF 6 and 99.9%CO 2 Under the protective atmosphere of the mixed gas, the low melting point sodium salt is evenly sprinkled on the surface of the magnesium alloy melt while stirring, wherein the low melting point ...

Embodiment 2

[0037] In this example, 800 kg of Mg-15Ni-Na hydrogen-storage magnesium alloy is prepared in a single time by using the preparation method of hydrogen-storage magnesium alloy. The specific method is as follows:

[0038] Step 1: Fusion of magnesium alloys.

[0039] In the atmospheric environment, 120Kg pure nickel sheets were preheated at 200 ℃ for 3h; 680Kg pure magnesium was put into 800Kg crucible with 0.1% SF 6 and 99.9%CO 2 The melting is carried out under the protective atmosphere of the mixed gas. After the pure magnesium is melted, the melt is heated to 700-740 ° C, and the preheated pure nickel sheet is added; after the pure nickel is melted, the magnesium alloy melt is heated to 720-740 ° C. Let stand.

[0040] Step 2: Deterioration of sodium salts.

[0041] at 0.1% SF 6 and 99.9%CO 2 Under the protective atmosphere of the mixed gas, the low melting point sodium salt is evenly sprinkled on the surface of the magnesium alloy melt while stirring, wherein the low m...

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Abstract

The invention discloses a method for preparing a hydrogen storage magnesium alloy, which comprises the following steps: A, magnesium alloy fusion; B, sodium salt modification; C, casting molding. Compared with the prior art, the present invention can realize the industrial batch production of Mg-Ni-Na hydrogen-storage magnesium alloy in atmospheric environment, significantly reducing the manufacturing cost of Mg-Ni-Na hydrogen-storage magnesium alloy; Compared with the method of adding sodium element through metal sodium, the method of adding sodium element through low melting point sodium salt is simple and easy, and at the same time significantly reduces the safety hazard and production cost in the process of adding sodium element, and is more conducive to Mg‑Ni‑Na Popularization and application of hydrogen storage magnesium alloy.

Description

technical field [0001] The invention belongs to the field of metal material processing, and particularly relates to a preparation method of a hydrogen storage magnesium alloy. Background technique [0002] Energy is the material basis for human existence and sustainable development. Due to the non-renewable nature of traditional energy sources such as coal, oil, and natural gas, alternative energy sources such as solar energy, wind energy, geothermal energy, and hydrogen energy have been continuously developed under the attention of human beings. Among them, hydrogen energy is recognized as one of the most promising future energy sources. . The hydrogen storage in the form of metal compounds is one of the best hydrogen storage schemes so far, which has the characteristics of large hydrogen storage capacity, good hydrogen absorption and desorption thermodynamics, high hydrogen desorption purity, and high safety. When hydrogen absorption is required, the metal reacts with hy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D7/00C22C1/02C22C1/06H01M4/38C22C23/00C01B3/00
CPCB22D7/005C22C1/02C22C1/06H01M4/383C22C23/00C01B3/0031Y02E60/10Y02E60/32Y02P20/133
Inventor 丁之光付彭怀朱荣玉肖刚彭立明丁文江
Owner SHANGHAI JIAO TONG UNIV