Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Magnesium-nickel-yttria hydrogen storage alloy thin belt and preparation method thereof

A hydrogen storage alloy and thin strip technology, which is applied in the field of magnesium-nickel-yttrium hydrogen storage alloy and its preparation, can solve the problems of high production cost, waste of magnesium resources, alloy composition change, etc., and achieve low equipment requirements and increase the area , low cost effect

Inactive Publication Date: 2013-05-01
NORTHWESTERN POLYTECHNICAL UNIV
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the serious evaporation of magnesium in the prior art, resulting in changes in alloy composition, waste of magnesium resources, and high production costs, the present invention proposes a magnesium-nickel-yttrium hydrogen storage alloy thin strip and its preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnesium-nickel-yttria hydrogen storage alloy thin belt and preparation method thereof
  • Magnesium-nickel-yttria hydrogen storage alloy thin belt and preparation method thereof
  • Magnesium-nickel-yttria hydrogen storage alloy thin belt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment is a magnesium-nickel hydrogen storage alloy strip, the raw materials of the magnesium-nickel hydrogen storage alloy strip include block magnesium with a purity of 99.8% and powdered nickel with a purity of 99.8%, according to the chemical formula Mg 67 Ni 33 The stoichiometric ratio is weighed, and the magnesium excess is 5wt.% as the burning loss. The stoichiometric specific weight is shown in Table 1. In this embodiment, 88.243 g of magnesium and 99.959 g of nickel powder are weighed.

[0026] Table 1 Alloy smelting ingredient list

[0027]

[0028]

[0029] Note: Mg excess 5wt.%, Y excess 2wt.%.

[0030] This embodiment also proposes a method for preparing a magnesium-nickel hydrogen storage alloy thin strip, the specific steps are:

[0031] Step 1, nickel powder is pre-pressed into blocks. Put the weighed nickel powder into a mold with an inner cavity diameter of 10mm, and place the mold in a tablet press. Pressurize the tablet machine t...

Embodiment 2

[0039] This embodiment is a magnesium-nickel-yttrium hydrogen storage alloy strip, the raw materials of the magnesium-nickel-yttrium hydrogen storage alloy strip include bulk magnesium with a purity of 99.8%, and magnesium-30 yttrium with a purity of 99.8%. The master alloy and powdered nickel with a purity of 99.8% are weighed according to the stoichiometric ratio of the chemical formula Mg67Ni32Y1, and the excess of magnesium is 5wt.% and the excess of yttrium is 2wt.% as the burning loss. The stoichiometric specific weight is shown in Table 1. In this embodiment, 76.673 g of magnesium, 15.470 g of magnesium-30 yttrium master alloy, and 96.116 g of nickel powder were weighed.

[0040] This embodiment also proposes a method for preparing a magnesium-nickel-yttrium hydrogen storage alloy strip, the specific steps are:

[0041] Step 1, nickel powder is pre-pressed into blocks. Put the weighed nickel powder into a mold with an inner cavity diameter of 10mm, and place the mold ...

Embodiment 3

[0049] This embodiment is a magnesium-nickel-yttrium hydrogen storage alloy strip, the raw materials of the magnesium-nickel-yttrium hydrogen storage alloy strip include bulk magnesium with a purity of 99.8%, and magnesium-30 yttrium with a purity of 99.8%. Master alloy and powdered nickel with a purity of 99.8%, according to the chemical formula Mg 67 Ni 30 Y 3 The stoichiometric ratio is weighed, and the excess of magnesium is 5wt.% and the excess of yttrium is 2wt.% as the amount of burning loss. The stoichiometric specific weight is shown in Table 1. In this embodiment, 54.107 g of magnesium, 45.640 g of magnesium-30 yttrium master alloy, and 88.619 g of nickel powder were weighed.

[0050] This embodiment also proposes a method for preparing a magnesium-nickel-yttrium hydrogen storage alloy strip, the specific steps are:

[0051] Step 1, nickel powder is pre-pressed into blocks. Put the weighed nickel powder into a mold with an inner cavity diameter of 10mm, and plac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A magnesium-nickel-yttria hydrogen storage alloy thin belt and a preparation method thereof. The hydrogen storage material contains 67at.% of Mg, and 33at.% of nickel and yttrium, wherein yttrium accounts for 0-10at.%, and the rest is nickel. Yttrium is added in a form of a magnesium yttrium intermediate alloy; nickel is added in a form of briquetted nickel powder; a two-step method is adopted to prepare a mother alloy by smelting; and the prepared alloy is remelted and quenched in a single roller melt quenching furnace to obtain a thin belt namely the finished hydrogen storage material. The material provided by the invention improves the hydrogen storage capacity and hydrogen absorption-desorption kinetic properties of a Mg2Ni type hydrogen storage alloy, and overcomes the contradiction that hydrogen storage capacity and dynamic property of Mg base alloy can not be improved at the same time. The invention has the characteristics of simple preparation method, low cost, and low requirement on equipment and environment.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage alloy materials, and in particular relates to a magnesium-nickel-yttrium hydrogen storage alloy and a preparation method thereof. Background technique [0002] Among all metals and alloys, elemental magnesium has the highest hydrogen storage capacity, up to 7.6wt.%, and magnesium-based alloys have the characteristics of abundant resources, light weight, low price, and no pollution, and are considered to be the most promising fuel cells. , Hydrogen storage materials for hydrogen-fueled vehicles, etc. However, the kinetic properties of Mg and Mg-based hydrogen storage alloys are poor, and there is still a certain distance from practical use. [0003] In order to improve the hydrogen storage performance of Mg-based hydrogen storage alloys, people mainly improve them from two aspects: one is to refine the grain and structure, such as mechanical ball milling and melt quenching; the other is t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C23/00C22C19/03C22C1/02B22D11/04
Inventor 张铁邦李金山宋文杰寇宏超王军胡锐钟宏
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com