Method for enhancing super-magnetostriction material performance

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, ...

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Problems solved by technology

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

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