Amorphous composite not containing Fe, Co and Ni and preparation method and application of amorphous composite

An amorphous composite material and nanocrystalline technology, applied in the field of magnetic refrigeration materials, can solve the problems of limited practical application, high rare earth content, high cost, etc., achieve excellent magnetocaloric performance, simple and easy preparation method, and reduce the cost of raw materials

Active Publication Date: 2020-04-10
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Er disclosed by the above-mentioned patented technology 60 Cu 20 Al 20 Amorphous low-temperature magnetic refrigeration m

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
  • Amorphous composite not containing Fe, Co and Ni and preparation method and application of amorphous composite
  • Amorphous composite not containing Fe, Co and Ni and preparation method and application of amorphous composite
  • Amorphous composite not containing Fe, Co and Ni and preparation method and application of amorphous composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of Er 45 Cu 45 al 10 Amorphous composite materials.

[0043] In this embodiment, the amorphous composite material is composed of Er, Cu and Al with an atomic ratio of 45:45:10.

[0044] The Er 45 Cu 45 al 10 The preparation method of the amorphous composite material is as follows:

[0045] According to the molecular formula of the chemical composition, Er, Cu and Al with a raw material purity of more than 99.9wt% are prepared according to the atomic ratio of 45:45:10, and the electric arc furnace (the electric arc furnace is first evacuated to 3 × 10 -3 Pa, then filled with argon to 5×10 4 Pa) mixed evenly and smelted for more than three times, after cooling, the ternary alloy Er 45 Cu 45 al 10 The master alloy ingot is cast; and then the master alloy ingot is melted in an argon gas with an intermediate frequency power supply using a vacuum stripping device. When the melting is complete and the composition is uniform, the molten metal is sprayed to...

Embodiment 2

[0054] Preparation of Er 40 Cu 40 al 20 Amorphous composite materials.

[0055] In this embodiment, the amorphous composite material is composed of Er, Cu and Al with an atomic ratio of 40:40:20.

[0056] The Er 45 Cu 45 al 10 The preparation method of the amorphous composite material is as follows:

[0057] According to the molecular formula of the chemical composition, after the Er, Cu and Al with a raw material purity of more than 99.9wt% are prepared according to the atomic ratio of 40:40:20, the electric arc furnace (the electric arc furnace is first evacuated to 3 × 10 -3 Pa, then filled with argon to 5×10 4 Pa) mixed evenly and smelted for more than three times, after cooling, the ternary alloy Er 40 Cu 40 al 20 The master alloy ingot is cast; and then the alloy ingot is melted in an argon gas with an intermediate frequency power supply by using a vacuum stripping device. When the melting is completely uniform, the molten metal is sprayed to a speed of 30m / s t...

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

PropertyMeasurementUnit
Glass transition temperatureaaaaaaaaaa
Glass transition temperatureaaaaaaaaaa
Login to view more

Abstract

The invention discloses an amorphous composite not containing Fe, Co and Ni. The chemical formula is (Er0.5Cu0.5)100-xAlx, wherein x is larger than or equal to 10 or smaller than or equal to 20. The invention further provides a preparation method of the amorphous composite. The preparation method includes the steps that (1), metal Er, metal Cu and metal Al are put in an electric arc furnace in proportion, the metal is smelted uniformly, and after the metal is cooled, a mother alloy cast ingot is obtained; and (2), the mother alloy cast ingot is re-melted into mother alloy melt, the mother alloy melt is sprayed to the surface of a rotating copper roller and subjected to shock cooling, and the strip-shaped amorphous composite is obtained. The invention further discloses application of the amorphous composite as a magnetic refrigerant material. As the amorphous composite does not contain elements such as the Fe, the Co and the Ni with a strong antiferromagnetic coupling effect with the Er, the amorphous composite has more excellent magnetothermal performance, a large magnetothermal effect can be achieved with small rare earth elements, and meanwhile the material cost is reduced.

Description

technical field [0001] The invention relates to the technical field of magnetic refrigeration materials, in particular to an amorphous composite material not containing Fe, Co and Ni, a preparation method and application thereof. Background technique [0002] Refrigeration technology has a wide range of applications in human life and production. Currently, traditional refrigeration technology works on the principle of gas compression / expansion, and the refrigerant used is a substance called "freon" or "chlorofluorocarbon". The entry of such substances into the atmosphere will destroy the atmospheric ozone layer, further worsen the global greenhouse effect, and cause great harm to human life and even survival. At present, a broad consensus has been reached in the world that the refrigerant used in traditional refrigeration technology will be gradually reduced until it is finally stopped. Under the above background, there is an urgent need to develop alternative materials an...

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): C22C45/00
CPCC22C45/001C22C1/11
Inventor 霍军涛冯静清王军强
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap