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Preparation method of hydrogen storage magnesium alloy

A magnesium alloy and hydrogen storage technology, applied in the field of metal material processing, can solve the problems of limiting the large-scale application of hydrogen storage magnesium alloy, low production efficiency of hydrogen storage magnesium alloy, limited quantity of hydrogen storage magnesium alloy, etc. The effect of kinetics, single smelting quantity increase, and pouring efficiency improvement

Active Publication Date: 2021-11-26
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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  • Preparation method of hydrogen storage magnesium alloy
  • Preparation method of hydrogen storage magnesium alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0027] In this example, 300 kg of Mg-15Ni-Na hydrogen-storage magnesium alloy was prepared in one time by using the hydrogen-storage magnesium alloy preparation method.

[0028] The specific method is as follows:

[0029] Step 1: Magnesium alloy fusion.

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

[0031] Step 2: Sodium salt spoilage.

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

Embodiment 2

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

[0038] Step 1: Magnesium alloy fusion.

[0039] In the atmospheric environment, preheat 120Kg pure nickel sheet at 200°C for 3 hours; put 680Kg pure magnesium into an 800Kg crucible with 0.1% SF 6 and 99.9% CO 2 Melting is carried out under the protective atmosphere of the mixed gas of pure magnesium, and when the melt is heated to 700-740°C after the pure magnesium is melted, the preheated pure nickel sheet is added; after the pure nickel is melted, the magnesium alloy melt is heated at 720-740°C stand still.

[0040] Step 2: Sodium salt spoilage.

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

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Abstract

The invention discloses a preparation method of a hydrogen storage magnesium alloy. The preparation method comprises the following steps of A, magnesium alloy melting and preparing; B, sodium salt modification; and C, casting forming. Compared with the prior art, the preparation method has the advantages that industrial batch production of the Mg-Ni-Na hydrogen storage magnesium alloy in the atmospheric environment can be realized, and the manufacturing cost of the Mg-Ni-Na hydrogen storage magnesium alloy is remarkably reduced; and compared with the mode of adding the sodium element through metallic sodium in the prior art, the method of adding the sodium element through the low-melting-point sodium salt is simple and easy to implement, meanwhile, the potential safety hazards and the production cost in the sodium element adding process are remarkably reduced, and popularization and application of the Mg-Ni-Na hydrogen storage magnesium alloy are better facilitated.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular 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-renewability 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 which hydrogen energy is recognized as one of the most promising future energy sources . Hydrogen storage in the form of metal compounds is one of the best hydrogen storage solutions so far, which has the characteristics of large hydrogen storage capacity, good thermodynamics of hydrogen absorption and desorption, high purity of hydrogen desorption, and high safety. When hydrogen absorption is needed, the metal reacts with hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/00C22C1/02C22C1/06H01M4/38
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