Fe-based amorphous alloy material and method of producing the same

A technology of iron-based amorphous alloy and magnetic material, which is applied in the field of iron-based amorphous alloy magnetic material and its preparation, and achieves the effects of simple process, strong glass forming ability and excellent soft magnetic properties

Active Publication Date: 2009-08-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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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  • Fe-based amorphous alloy material and method of producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: preparation (Fe 0.5 co 0.5 ) 50 Dy 25 B 20 Si 5 Amorphous Alloy Ribbon

[0017] This embodiment adopts the single-roller stripping method to prepare a thickness of 40 μm-80 μm, a width of 2.0mm-2.5mm (Fe 0.5 co 0.5 ) 50 Dy 25 B 20 Si 5 Amorphous alloy thin strips.

[0018] Step 1: By atomic percentage (Fe 0.5 co 0.5 ) 50 Dy 25 B 20 Si 5 Weigh Fe with a purity of 99.8%, Co with a purity of 99.9%, Si with a purity of 99.9%, Dy and FeB alloys with a purity of 99.9%, and put the weighed target composition raw materials into a vacuum high-frequency induction melting furnace, Vacuum down to 4×10 -3 Pa, filled with high-purity argon protective gas, adjusted the current to 35A, and repeatedly smelted the alloy for 5 times to obtain a uniform composition (Fe 0.5 co 0.5 ) 50 Dy 25 B 20 Si 5 master alloy.

[0019] Step 2: Take the (Fe 0.5 co 0.5 ) 50 Dy 25 B 20 Si 5 The master alloy ingot is broken into small pieces after descaling, and...

Embodiment 2

[0023] Embodiment 2: preparation (Fe 0.5 co 0.5 ) 63 Dy 12 B 20 Si 5 Amorphous Alloy Ribbon

[0024] This embodiment adopts the single-roller stripping method to prepare a thickness of 40 μm-80 μm, a width of 2.0mm-2.5mm (Fe 0.5 co 0.5 ) 63 Dy 12 B 20 Si 5 Amorphous alloy thin strips.

[0025] Step 1: By atomic percentage (Fe 0.5 co 0.5 ) 63 Dy 12 B 20 Si 5 Weigh Fe with a purity of 99.8%, Co with a purity of 99.9%, Si with a purity of 99.9%, Dy and FeB alloys with a purity of 99.9%, and put the weighed target composition raw materials into a vacuum high-frequency induction melting furnace, Vacuum down to 4×10 -3 Pa, filled with high-purity argon protective gas, adjusted the current 20A, and repeatedly smelted the alloy 5 times to obtain a uniform composition (Fe 0.5 co 0.5 ) 63 Dy 12 B 20 Si 5 master alloy.

[0026] Step 2: Take the (Fe 0.5 co 0.5 ) 63 Dy 12 B 20 Si 5 The master alloy ingot is broken into small pieces after descaling, and ultras...

Embodiment 3

[0030] Embodiment 3: preparation (Fe 0.5 co 0.5 ) 70 Dy 5 B 20 Si 5 Amorphous Alloy Ribbon

[0031] This embodiment adopts the single-roller stripping method to prepare a thickness of 40 μm-80 μm, a width of 2.0mm-2.5mm (Fe 0.5 co 0.5 ) 70 Dy 5 B 20 Si 5 Amorphous alloy thin strips.

[0032] Step 1: By atomic percentage (Fe 0.5 co 0.5 ) 70 Dy 5 B 20 Si 5 Weigh Fe with a purity of 99.8%, Co with a purity of 99.9%, Si with a purity of 99.9%, Dy and FeB alloys with a purity of 99.9%, and put the weighed target composition raw materials into a vacuum high-frequency induction melting furnace, Vacuum to 3.8×10 -3 Pa, filled with high-purity argon protective gas, adjusted the current 27A, and repeatedly smelted the alloy for 7 times to obtain a uniform composition (Fe 0.5 co 0.5 ) 70 Dy 5 B 20 Si 5 master alloy.

[0033] Step 2: Take the (Fe 0.5 co 0.5 ) 70 Dy 5 B 20 Si 5 The master alloy ingot is broken into small pieces after descaling, and ultrasonic...

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Abstract

The invention discloses a Fe-based amorphous alloy magnetic material and a preparation method thereof. The alloy material has the following chemical formula: (Fe100-aCoa)x-Dyy-Bz-Siw, wherein, x, y, z and w are atomic percent, x is more than or equal to 60 and less than or equal to 75, y is more than or equal to 5 and less than or equal to 25, z is more than or equal to 20 and less than or equal to 25, w is more than or equal to 0 and less than or equal to 10, a is more than or equal to 0 and less than or equal to 10, and x plus y plus z plus w equals 100. The manufacturing of the alloy has the following steps: the pure raw metal and FeB are mixed by the alloy formula and smelted to master alloy by magnetic suspension induction; then amorphous thin strips are manufactured by the melt-spinning method. The alloy of the invention has relatively good glass forming capacity and fine soft magnetic performance; moreover, the needed raw materials are mostly technically pure, thus reducing cost; meanwhile, the manufacturing technique is simple and can be applied to structural materials, magnetic materials and the like.

Description

technical field [0001] The invention relates to the field of amorphous magnetic materials, in particular to an iron-based amorphous alloy magnetic material and a preparation method thereof. Background technique [0002] Materials in nature are classified according to their structure and can be roughly divided into two categories: crystalline and amorphous. The chaotic arrangement of amorphous alloy atoms is similar to glass, so it is also called metallic glass (Bulk Metal Glass). Due to the unique long-range disordered structure of amorphous metals and alloys, they have unique physical, chemical and mechanical properties different from crystalline metals. Such as high strength and fracture toughness, excellent corrosion resistance, excellent magnetic properties, can obtain high, positive or negative magnetostriction coefficient. Based on the good characteristics of amorphous alloy, it has been widely used in aviation, aerospace, information and electronics, precision machi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02C22C33/04
Inventor 严密陶姗简红
Owner ZHEJIANG UNIV
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