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

Thermoplastic molding adhesion magnetic refrigerant materials, preparation method and applications

A thermoplastic forming and magnetic refrigeration technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of unsatisfactory mechanical properties, limited materials, etc., to achieve easy operation and industrialized production, low price, and preparation methods. simple effect

Active Publication Date: 2013-12-04
INST OF PHYSICS - CHINESE ACAD OF SCI
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the first-order phase transition La(Fe,Si) 13 Base materials (strong magneto-crystalline coupling, magnetic phase transition accompanied by significant lattice expansion), regular-shaped working fluid materials made by powder metallurgy will inevitably have micro-cracks or fractures during the cycle, and the mechanical properties are not good. ideal, which limits the practical application of the material

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
  • Thermoplastic molding adhesion magnetic refrigerant materials, preparation method and applications
  • Thermoplastic molding adhesion magnetic refrigerant materials, preparation method and applications
  • Thermoplastic molding adhesion magnetic refrigerant materials, preparation method and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1: prepare good La with high strength and toughness 0.7 Ce 0.3 Fe 11.6 Si 1.4 C 0.3 Magnetic refrigerant material

[0062] 1) Press La 0.7 Ce 0.3 Fe 11.6 Si 1.4 C 0.3 Chemical formula ingredients, the raw materials are industrial pure LaCe alloy, Fe, Si, La and FeC, among them, elemental La is used to supplement the part of La deficiency in LaCe alloy, and FeC alloy is used to provide C. Since FeC alloy also contains Fe element, it needs Appropriately reduce the added elemental Fe, so that the ratio of various elements added still meets the atomic ratio of the chemical formula of the magnetic material.

[0063] 2) Mix the raw materials in step 1), put them into the electric arc furnace, and evacuate to 2×10 -3 Pa, the furnace cavity is cleaned twice with high-purity argon gas with a purity of 99.996wt%, and then the furnace cavity is filled with high-purity argon gas with a purity of 99.996wt% to an atmospheric pressure, and the...

Embodiment 2

[0080] Embodiment 2: prepare the good La of high strength toughness 0.7 Ce 0.3 Fe 1.6 Si 1.4 C 0.2 Magnetic refrigerant material

[0081] 1) Press La 0.7 Ce 0.3 Fe 11.6 Si 1.4 C 0.2 Chemical formula ingredients, the raw materials are industrial pure LaCe alloy, Fe, Si, La and FeC, among them, elemental La is used to supplement the part of La deficiency in LaCe alloy, and FeC alloy is used to provide C. Since FeC alloy also contains Fe element, it needs Appropriately reduce the added elemental Fe, so that the ratio of various elements added still meets the atomic ratio of the chemical formula of the magnetic material.

[0082] 2) Mix the raw materials in step 1), put them into the electric arc furnace, and evacuate to 2×10 -3 Pa, the furnace cavity is cleaned twice with high-purity argon gas with a purity of 99.996wt%, and then the furnace cavity is filled with high-purity argon gas with a purity of 99.996wt% to an atmospheric pressure, and the ar...

Embodiment 3

[0101] Example 3: La with small hysteresis loss 0.7 Ce 0.3 Fe 11.6 Si 1.4 C 0.2 Magnetocaloric Effect Materials

[0102] 1) Press La 0.7 Ce 0.3 Fe 11.6 Si 1.4 C 0.2 Chemical formula ingredients, the raw materials are industrial pure LaCe alloy, Fe, Si, La and FeC, among them, elemental La is used to supplement the part of La deficiency in LaCe alloy, and FeC alloy is used to provide C. Since FeC alloy also contains Fe element, it needs Appropriately reduce the added elemental Fe, so that the ratio of the various elements added still meets the atomic ratio of the chemical formula of the magnetic material;

[0103] 2) Mix the raw materials in step 1), put them into the electric arc furnace, and evacuate to 2×10 -3 Pa, clean the furnace chamber twice with high-purity argon gas with a purity of 99.996%, and then fill the furnace chamber with high-purity argon gas with a purity of 99.996% to an atmospheric pressure, and the arc starts (the raw materia...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention provides magnetic refrigerant materials, a preparation method and applications. The materials comprise alloy particles with magnetocaloric effects and thermoplastic-type adhesion agents, wherein the particle size of the alloy particles is less than or equal to 200 microns; the alloy particles are adhered into block materials by the adhesion agents through thermoplastic molding; the alloy particles with magnetocaloric effects are La(Fe, Si)13-based materials with a NaZn13-type structure, the preference being La0.7Ce0.3Fe11.6Si1.4Cx, wherein x is more than or equal to 0.2 and less than or equal to 0.3. La(Fe, Si)13-based materials with magnetocaloric effects, high strength and good toughness are obtained through adhesion of adhesion agents and thermoplastic molding methods. The problem that materials with magnetocaloric effects are fragile is overcome. Though the range of magnetic entropy change and effective refrigerating capacity are declined compared to the range and the refrigerating capacity before adhesion, the range is still considerable. When the magnetocaloric materials prepared through the thermoplastic molding technology are compared to magnetocaloric materials prepared through the thermosetting molding technology, the toughness of the magnetocaloric materials prepared through the thermoplastic molding technology is enhanced greatly, the dependent variable corresponding to the maximum supporting pressure is increased greatly.

Description

technical field [0001] The invention belongs to the field of magnetic refrigeration working fluid materials. Specifically, the present invention relates to a bonded La(Fe,Si) with high strength 13 Magnetic-based refrigerant material, its preparation method and material application. More specifically, the present invention relates to a high-strength La(Fe,Si) bond formed by thermoplastic adhesives (such as PA6 (polyamide 6), PP (polyethylene), etc.) 13 Basic magnetic refrigerant material, its preparation method and material application. Background technique [0002] The energy consumption of the refrigeration industry accounts for more than 15% of the total energy consumption of the society. The Carnot cycle efficiency of the commonly used gas compression refrigeration technology is only about 25%, and the gas refrigerant used in gas compression refrigeration will destroy the ozone layer of the atmosphere and cause the greenhouse effect. Searching for non-polluting, green...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C1/04H01F1/055
Inventor 宋宇博孙继荣丁伯华
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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