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Method for enhancing super-magnetostriction material performance

A giant magnetostrictive and magnetostrictive technology, applied in the field of metal materials, can solve the problems of high equipment requirements and difficult control of process conditions.

Inactive Publication Date: 2007-11-21
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods have higher requirements on equipment, and the process conditions are difficult to control

Method used

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  • Method for enhancing super-magnetostriction material performance
  • Method for enhancing super-magnetostriction material performance
  • Method for enhancing super-magnetostriction material performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Gas-phase hydrogen charging conditions: hydrogen pressure 1atm, room temperature, hydrogen charging time 6h.

Embodiment 2

[0023] Gas-phase hydrogen charging conditions: hydrogen pressure 1atm, room temperature, hydrogen charging time 12h.

Embodiment 3

[0025] Gas-phase hydrogen charging conditions: hydrogen pressure 1atm, room temperature, hydrogen charging time 24h.

[0026]

[0027] Note: - indicates that the maximum range of the instrument has been exceeded

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Abstract

A hydrogen charge-in method to a super magnetostrictive material (Tb,Dy)Fe2 includes the following steps: put the rod of Tb0.3Dy0.73Fe1.95 with an orientation of [110] into the hydrogen charge-in chamber; vacuum the chamber around 10Pa; clean the chamber with hydrogen; charge-in hydrogen at a pressure of 0.1-10 atm and temperature at 20-300oC for 1-24hr.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a method for improving (Tb, Dy)Fe by using a gas-phase hydrogen charging method. 2 A method for the magnetostrictive properties of giant magnetostrictive materials. technical background [0002] (Tb,Dy)Fe 2 Giant magnetostrictive materials are widely used in magnetic (electric)-acoustic transducers and actuators because of their irreplaceable advantages such as high magnetostrictive strain, large output power, high energy density and fast response speed. As well as sensors and other aspects, the fields involved are aerospace, national defense and military, petrochemical, communication electronics, automobile industry, etc. It has been widely used in many fields (including national defense). [0003] At present, the research on rare earth giant magnetostrictive materials in the world mainly focuses on two aspects: the first is the magnetic properties of magnetostrictive materials, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/14H01F41/00B22F3/02H01L41/20H10N35/85
Inventor 乔利杰崔培褚武扬
Owner UNIV OF SCI & TECH BEIJING
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