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High magnetostriction iron based amorphous alloy and preparation thereof

A technology of iron-based amorphous alloy and stretching, which is applied in the field of high magnetostrictive iron-based amorphous alloy and its preparation, to achieve the effects of strong amorphous forming ability, high thermal stability, and high magnetostriction coefficient

Inactive Publication Date: 2009-08-12
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as a potential functional material, the existing developed Fe-based amorphous alloy system still has strong amorphous-forming ability and excellent soft magnetic properties, especially for the magnetostriction of Fe-based amorphous alloys. Performance research is almost blank

Method used

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  • High magnetostriction iron based amorphous alloy and preparation thereof
  • High magnetostriction iron based amorphous alloy and preparation thereof
  • High magnetostriction iron based amorphous alloy and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: prepare Fe 50.25 Dy 24.75 B 20 Si 5 Amorphous Alloy Ribbon

[0019] In this embodiment, a single-roller strip method is used to prepare Fe with a thickness of 20 μm-60 μm and a width of 1.5mm-2.5mm. 50.25 Dy 24.75 B 20 Si 5 Amorphous alloy thin strips.

[0020] Step 1: By atomic percent Fe 50.25 Dy 24.75 B 20 Si 5 Weigh Fe with a purity of 99.8%, Si with a purity of 99.9%, Dy and FeB alloys with a purity of 99.9%, put the target composition raw materials into a vacuum induction magnetic levitation melting furnace, and use electromagnetic fields and eddy currents after vacuuming The effect makes the alloy suspend, heat and melt, and the alloy is repeatedly smelted 5 times to obtain Fe with uniform composition. 50.25 Dy 24.75 B 20 Si 5 master alloy.

[0021] Step 2: Take the Fe obtained in step 1 50.25 Dy 24.75 B 20 Si 5 The master alloy ingot is broken into small pieces after descaling, and ultrasonically cleaned in alcohol.

[0022] St...

Embodiment 2

[0028] Embodiment 2: prepare Fe 63 Dy 12 B 20 Si 5 Amorphous Alloy Ribbon

[0029] In this embodiment, a single-roller strip method is used to prepare Fe with a thickness of 20 μm-60 μm and a width of 1.5mm-2.5mm. 63 Dy 12 B 20 Si 5 Amorphous alloy thin strips.

[0030] Step 1: By atomic percent Fe 63 Dy 12 B 20 Si 5 Weigh Fe with a purity of 99.8%, Si with a purity of 99.9%, Dy and FeB alloys with a purity of 99.9%, put the target composition raw materials into a vacuum induction magnetic levitation melting furnace, and use electromagnetic fields and eddy currents after vacuuming The effect makes the alloy suspend, heat and melt, and the alloy is repeatedly smelted 3 times to obtain Fe with uniform composition.63 Dy 12 B 20 Si 5 master alloy.

[0031] Step 2: Take the Fe obtained in step 1 63 Dy 12 B 20 Si 5 The master alloy ingot was broken into small pieces and ultrasonically cleaned in alcohol.

[0032] Step 3: Using the Fe obtained in Step 2 63 Dy 12...

Embodiment 3

[0038] Embodiment 3: prepare Fe 70 Dy 5 B 20 Si 5 Amorphous Alloy Ribbon

[0039] In this embodiment, a single-roller strip method is used to prepare Fe with a thickness of 20 μm-60 μm and a width of 1.5mm-2.5mm. 70 Dy 5 B 20 Si 5 Amorphous alloy thin strips.

[0040] Step 1: By atomic percent Fe 70 Dy 5 B 20 Si 5 Weigh Fe with a purity of 99.8%, Si with a purity of 99.9%, Dy and FeB alloys with a purity of 99.9%, put the target composition raw materials into a vacuum induction magnetic levitation melting furnace, and use electromagnetic fields and eddy currents after vacuuming The effect makes the alloy suspend, heat and melt, and the alloy is repeatedly smelted 4 times to obtain Fe with uniform composition. 70 Dy 5 B 20 Si 5 master alloy.

[0041] Step 2: Take the Fe obtained in step 1 70 Dy 5 B 20 Si 5 The master alloy ingot was broken into small pieces and ultrasonically cleaned in alcohol.

[0042] Step 3: Using the Fe obtained in Step 2 70 Dy 5 B ...

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Abstract

The invention discloses a high magnetostriction iron base amorphous alloy and a preparation method thereof. The high magnetostriction iron base amorphous alloy has the following chemical molecular formula: Fe100-x-y-zDyxBySiz, wherein x, y and z are the atom percent of a Dy element, a B element and a Si element respectively, 100-x-y-z is the atom percent of a Fe element, x is more than or equal to 5 and less than or equal to 25, y is more than or equal to 20 and less than or equal to 25, and z is more than or equal to 0 and less than or equal to 10. The preparation method comprises the following steps: mixing industrial pure metal raw materials and an FeB alloy according to an alloy formulation, carrying out the magnetic suspension induction smelting on the raw materials and the FeB alloy to obtain a mother alloy, and then preparing an amorphous thin belt through a single roller melt-spun method. The iron base amorphous alloy material has a high magnetostriction coefficient of 228 ppm, excellent soft magnetization performance, high thermal stability, and a good amorphous formation capability. Simultaneously, the alloy material has simple preparation method and can be widely applied to the aspects of soft magnetization materials and structural materials in the fields of information, communication, computer, and the like.

Description

technical field [0001] The invention relates to the field of amorphous magnetic materials, in particular to a high magnetostrictive iron-based amorphous alloy and a preparation method thereof. Background technique [0002] Condensed matter is roughly divided into three categories: crystalline, quasi-crystalline, and amorphous. Different from traditional crystalline materials, amorphous alloys have a special microstructure with long-range disorder and short-range order of atomic arrangement, and have unique physical, mechanical, chemical and magnetic properties, so they have broad application prospects. Amorphous alloy appeared as a new material in 1934, and the amorphous alloy thin film was obtained by the German scientist Kramer (Kramer) by evaporation deposition method. The real history of amorphous is from the invention of Professor P.Duwez of California Institute of Technology in 1960 to prepare amorphous alloy (Au 75 Si 25 ) began to expand the scope of synthetic gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C22C33/04
Inventor 马天宇陶姗罗伟严密
Owner ZHEJIANG UNIV
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