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Iron-based magnetostrictive alloy wire and production method thereof

A magnetostrictive and alloy wire technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of undiscovered iron-based magnetostrictive wire patents, etc. good strength effect

Active Publication Date: 2010-09-08
NAT ENG RES CENT OF RARE EARTH METALLURGY & FUNCTION MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] These published patents on magnetostrictive wires are all patents on Fe-Ga-based magnetostrictive wires, and no patents on other iron-based magnetostrictive wires have been found.

Method used

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  • Iron-based magnetostrictive alloy wire and production method thereof
  • Iron-based magnetostrictive alloy wire and production method thereof
  • Iron-based magnetostrictive alloy wire and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Fe 78 Ga 17 Al 4 Tb 1 Magnetostrictive filament

[0031] Weigh the raw materials required for the design components with an electronic balance, and use Fe with a purity of more than 99%, 99.99% Ga, 99.5% Al, 99.9% Tb, and add 2% Ga and Tb. Put the good raw materials into the crucible and vacuum to 3×10 -3 Pa, pass argon protection and heating to form an alloy, and after melting, refining for 2 to 3 minutes, and then pouring into an alloy ingot;

[0032] The alloy ingot is hot forged at 1050°C into a 20×20mm billet to provide raw materials suitable for rolling;

[0033] The forged alloys were hot rolled at 1000°C and warm rolled at 500°C, respectively, and rolled into wire rods with a diameter of 8mm;

[0034] The wire rod rolled into φ8mm is cold drawn at 10-35°C, the total number of passes is 18, and the wire rod with φ2.5mm is cold drawn.

[0035] image 3 .for Fe 78 Ga 17 Al 4 Tb 1 The room temperature magnetostriction curve of the alloy wire s...

Embodiment 2

[0036] Example 2: Fe 76.2 Ga 18 Mn 4 V 1 Ce 0.8 Magnetostrictive filament

[0037] Weigh the raw materials required for the design components with an electronic balance, in which Fe with a purity greater than 99%, Ga with a purity of 99.99%, Mn and V with a purity of 99.9% are used, and the burning loss of 3% Ga and Ce is added. Put it in a crucible and vacuum to 3×10 -3 Pa, pass argon protection and heating to form an alloy, and after melting, refining for 2 to 3 minutes, and then pouring into an alloy ingot;

[0038] The alloy ingot is hot forged at 1100°C into a 20×20mm billet to provide raw materials suitable for rolling;

[0039] The forged alloys were hot-rolled at 980°C and warm-rolled at 450°C, respectively, and rolled into wire rods with a diameter of 8 mm;

[0040] The wire rod rolled into φ8mm is cold drawn at 10-35°C, and then cold drawn into a φ1.5mm wire.

[0041] Figure 4 .for Fe 76.2 Ga 18 Mn 4 V 1 Ce 0.8 The room temperature magnetostriction curve...

Embodiment 3

[0042] Example 3: Fe 58.5 Ga 17 Ni 20 Cu 2 Ti 3 Dy 0.5 Magnetostrictive filament

[0043] Weigh the raw materials required for the design composition with an electronic balance, in which Fe, 99.99% Ga, 99.5% Ni, 99.9% Cu, Ti, Dy, and 3% Ga, Dy are used. The amount of loss, put the prepared raw materials into the crucible, and vacuum to 3 × 10 -3 Pa, pass argon protection and heating to form an alloy, and after melting, refining for 2 to 3 minutes, and then pouring into an alloy ingot;

[0044] The alloy ingot is hot forged at 1100°C into a 20×20mm billet to provide raw materials suitable for rolling;

[0045] The forged alloys were hot rolled at 1000°C and warm rolled at 450°C, respectively, and rolled into wire rods with a diameter of 6.5 mm;

[0046] The wire rod rolled to φ8mm is cold drawn at 10-35°C, and then cold drawn into a φ1.0mm wire.

[0047] Figure 5 .for Fe 58.5 Ga 17 Ni 20 Cu 2 Ti 3 Dy 0.5 The room temperature magnetostrictive performance curve o...

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Abstract

The invention relates to an iron-based magnetostrictive alloy wire and a production method thereof. The molecular formula of the alloy is Fe1-x-yMxNyREz, M is one or more of Ga, In, Cr, Ni and Co, N is one or more of Al, Mn, V, Nb, Ti and Zr, RE is one or more of La, Ce, Pr, Nb, Tb, Dy, Y and Sc, wherein x is equal to 15 percent to 60 percent, y is equal to 0 percent to 10 percent, z is equal to 0 to 1.0, and the rest is Fe. The technical point is as follows: according to the alloy composition requirement, an ingot casting is smelted, hammer cogging is carried out, and after a wire rod with the diameter of 8mm is rolled, the wire rod is cold-drawn into the alloy wire. The size of the alloy wire produced by the method can be adjusted within a wide range, consequently, a sensor can be conveniently designed, and the magnetostrictive material can be used in more fields. The magnetostriction coefficient of the iron-based magnetostrictive material can reach 367ppm under a 4000Oe applied magnetic field.

Description

technical field [0001] The invention relates to an iron-based magnetostrictive alloy wire and a preparation method thereof, belonging to the field of magnetic materials. Background technique [0002] When a ferromagnetic substance changes its magnetization state, its own length and volume change slightly. This phenomenon is called magnetostriction. The change in volume is called volume magnetostriction; the change in length is called linear magnetostriction. A practical magnetostrictive material refers to a material with linear magnetostrictive properties. Almost all ferromagnetic materials have magnetostrictive properties. The magnitude of magnetostriction is represented by the magnetostriction coefficient λ, which is defined as λ=ΔL / L (L is the original length of the material sample, and ΔL is the state of the sample when the magnetization state changes). When a ferromagnetic material is simultaneously acted by an axial magnetic field and a circumferential magnetic fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00C22C33/06B21C37/06H01F1/047
Inventor 江丽萍郝洪波张光睿吴双霞杨建东
Owner NAT ENG RES CENT OF RARE EARTH METALLURGY & FUNCTION MATERIALS
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