Processing method and anti-corrosion technology for magnetic refrigeration material

A technology of magnetic refrigeration materials and processing methods, applied in the direction of magnetic materials, manufacturing tools, other manufacturing equipment/tools, etc.

Inactive Publication Date: 2011-09-21
杨晓峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In terms of thermal efficiency, magnetic refrigeration can reach 30% to 60% of the Carnot cycle, while refrigeration cycles that rely on gas compression-expansion generally can only reach 5% to 10%.

Method used

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  • Processing method and anti-corrosion technology for magnetic refrigeration material
  • Processing method and anti-corrosion technology for magnetic refrigeration material

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Embodiment Construction

[0042] Rare earth magnetic refrigeration materials are non-polluting refrigeration materials. Using magnetic refrigeration materials to replace refrigerators, refrigerators, freezers and air conditioners currently using Freon refrigerants can eliminate environmental pollution caused by the production and use of Freon-based refrigeration and damage to the ozone layer. Magnetic refrigeration is based on the principle of magnetocaloric effect, using an external magnetic field to make the magnetic moment of the magnetic working medium change in an orderly and disorderly manner (phase transition), causing the magnet to absorb heat and release heat to perform a refrigeration cycle. Compared with gas compression refrigeration , Magnetic refrigeration has the characteristics of high entropy density, small size, simple structure, low noise, high efficiency and low power consumption. At present, magnetic refrigeration has been widely used in low temperature regions. At present, due to ...

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Abstract

The invention relates to a method for processing a magnetic refrigeration material by taking rare earth metal Gd and a multicomponent alloy thereof as raw materials. The magnetic refrigeration material taking Gd as a main body mainly comprises a pure Gd piece, pure Gd particles, a rolled Gd piece, a Gd-based alloy and a Gd-based alloy rolled piece. The processing method comprises the following steps of: firstly, processing a Gd metal or Gd-based alloy ingot; secondly, carrying cold rolling and vacuum heat treatment; thirdly, treating the surface of the rolled piece; fourthly, precisely dividing the rolled piece; and fifthly, plating the surface of the rolled piece.

Description

Technical field: [0001] The invention relates to a processing method of a magnetic refrigeration material, in particular to a processing method of a magnetic refrigeration material using rare earth metal gadolinium and its multielement alloy as raw materials. technical background: [0002] At present, there are many refrigeration materials used by people, such as liquid ammonia, liquid helium, freon, lithium bromide and other chemical materials. These refrigeration materials are refrigerated by the principle of gasification heat absorption and liquefaction heat dissipation. Will bring pollution and damage to the environment. [0003] At the end of the 1920s, scientists discovered the principle of the magnetocaloric effect, that is, the magnetic refrigeration material emits heat to the outside when it is magnetized isothermally, and absorbs heat from the outside when it is adiabatically demagnetized, so as to achieve the purpose of refrigeration. A lot of research and develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04
CPCC22F1/16H01F1/015
Inventor 杨晓峰
Owner 杨晓峰
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