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Fe-Ga base magnetism driven elastic silk and part using this material

A technology of magnetostriction and magnetostriction coefficient, which is applied in the selection of materials for magnetostrictive devices, the magnetic properties of inorganic materials, and the selection of device materials, which can solve the problems of not finding Fe-Ga magnetostrictive wire patents, Achieve good magnetostrictive inverse effect, improve sensitivity and precision, good strength and toughness

Active Publication Date: 2008-09-10
GRIREM ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] These published Fe-Ga patents are all patents on Fe-Ga magnetostrictive rods or strips, and no patents on Fe-Ga magnetostrictive wires have been found.

Method used

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  • Fe-Ga base magnetism driven elastic silk and part using this material
  • Fe-Ga base magnetism driven elastic silk and part using this material
  • Fe-Ga base magnetism driven elastic silk and part using this material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] The chemical composition of the prepared Fe-Ga-based magnetostrictive yarn is expressed in atomic percentage, see Tables 1-4; the dimensions and magnetostrictive properties are shown in Tables 5-8.

[0025] Table 1

[0026]

[0027] Table 2

[0028]

[0029]

[0030] table 3

[0031]

[0032] Table 4

[0033]

[0034] table 5

[0035]

[0036] Table 6

[0037]

[0038] Table 7

[0039]

[0040] Table 8

[0041]

[0042] Table 9

[0043]

[0044] Table 10

[0045]

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PUM

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Abstract

The invention relates to a Fe-Ga group magnetostriction wire and material composition thereof is Fe1-x-yGaxMy, wherein, M is tantalum of transition group except for Fe and one or a plurality of Be, B, Al, In, Si, Ge, Sn, Pb, Sb, Bi, N, S and Se; x is equal to 5-30at percent and y is equal to 0-15at percent and the allowance is Fe; diameter d is 0.1-5mm. A device adopts the Fe-Ga group magnetostriction wire is also disclosed.

Description

technical field [0001] The invention belongs to the field of magnetic materials, and relates to a Fe-Ga-based magnetostrictive wire, which can be used as a sensitive element of devices such as sensors. technical background [0002] When the magnetostrictive material is placed in an external magnetic field in a certain direction, the spontaneous magnetization direction of the magnetic domain of the material will turn to the direction of the external magnetic field. If the linearity of the magnetic domain along the spontaneous magnetization direction is different from that in other directions, strain will occur , and then generate stress. From a macroscopic point of view, the material changes along the scale of the external magnetic field, that is, the Joule effect. On the contrary, when the magnetic domain direction of the material changes under the action of stress, it will also cause the change of the magnetic induction intensity of the material, which is called It is Villa...

Claims

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Application Information

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IPC IPC(8): H01L41/20H01F1/03C22C38/00
Inventor 于敦波李勇胜张世荣胡权霞徐静袁永强李扩社姜力
Owner GRIREM ADVANCED MATERIALS CO LTD
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