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Iron - cobalt - based toughness nanocrystalline soft magnetic alloy and preparation method thereof

A nanocrystalline soft magnetic, iron-cobalt-based technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of iron-based nanocrystalline alloy strips, such as bending brittleness, few results reported, etc., to achieve superior soft magnetic properties. energy, high saturation magnetic induction, excellent mechanical properties and machinability

Inactive Publication Date: 2017-08-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, unlike amorphous alloys, iron-based nanocrystalline alloy ribbons exhibit flexural brittleness (fracture after being folded in half), which is the most serious problem faced by nanocrystalline materials
For a long time, people hope to find a way to overcome this problem, but the relevant results are rarely reported

Method used

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  • Iron - cobalt - based toughness nanocrystalline soft magnetic alloy and preparation method thereof
  • Iron - cobalt - based toughness nanocrystalline soft magnetic alloy and preparation method thereof
  • Iron - cobalt - based toughness nanocrystalline soft magnetic alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0065] An iron-cobalt-based ductile nanocrystalline soft magnetic alloy (Fe 0.8 co 0.2 ) 100-x B x The preparation method of (x=13,14,15) is prepared according to the following steps:

[0066] Step 1, according to the composition expression ((Fe 0.8 co 0.2 ) 87 B 13 , (Fe 0.8 co 0.2 ) 86 B 14 and (Fe 0.8 co 0.2 ) 85 B 15 ) convert the atomic percentage into mass percentage to configure the raw materials, weigh high-purity Fe of corresponding quality, Co, and B and mix them for use. See Table 1 for the purity of Fe, Co, and B and the manufacturer.

[0067] Step 2, put the raw materials configured in step 1 in a vacuum arc melting furnace, and vacuumize to 9.5×10 -3Pa, fill with argon, under the protection of argon, heat the raw material to be completely melted and uniform after 3 times of smelting, then cool to room temperature 20-25°C to make a master alloy ingot; crush the master alloy ingot to 0.1- 0.6mm, ultrasonic cleaning in alcohol for 45min.

[0068] St...

Embodiment 2

[0081] An iron-cobalt-based ductile nanocrystalline soft magnetic alloy (Fe 0.8 co 0.2 ) 99-x B x Mo 1 The preparation method of (x=13,14) is prepared according to the following steps:

[0082] Step 1, according to the composition expression ((Fe 0.8 co 0.2 ) 86 B 13 Mo 1 and (Fe 0.8 co 0.2 ) 85 B 14 Mo 1 ) Convert the atomic percentage to mass percentage to configure the raw materials, weigh high-purity Fe, Co, B, and Mo of the corresponding quality and mix them for use. See Table 1 for the purity and manufacturer of Fe, Co, B, and Mo.

[0083] Step 2, put the raw materials configured in step 1 in a vacuum arc melting furnace, and vacuumize to 9.5×10 -3 Pa, fill with argon, under the protection of argon, heat the raw material to be completely melted and uniform after 3 times of smelting, then cool to room temperature 20-25°C to make a master alloy ingot; crush the master alloy ingot to 0.1- 0.6mm, ultrasonic cleaning in alcohol for 45min.

[0084] Step 3, plac...

Embodiment 3

[0092] An iron-cobalt-based ductile nanocrystalline soft magnetic alloy (Fe 0.8 co 0.2 ) 84 B 14 Mo 2 The preparation method is prepared according to the following steps:

[0093] Step 1, according to the composition expression (Fe 0.8 co 0.2 ) 84 B 14 Mo 2 Convert atomic percentages to mass percentages to configure raw materials, weigh high-purity Fe, Co, B, and Mo of corresponding quality and mix them for use. See Table 1 for the purity and manufacturers of Fe, Co, B, and Mo.

[0094] Step 2, put the raw materials configured in step 1 in a vacuum arc melting furnace, and vacuumize to 9.5×10 -3 Pa, fill with argon, under the protection of argon, heat the raw material to be completely melted and uniform after 3 times of smelting, then cool to room temperature 20-25°C to make a master alloy ingot; crush the master alloy ingot to 0.1- 0.6mm, ultrasonic cleaning in alcohol for 45min.

[0095] Step 3, place the master alloy ingot of the small piece cleaned in step 2 in ...

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Abstract

The invention discloses an iron - cobalt - based toughness nanocrystalline soft magnetic alloy and a preparation method thereof, wherein, the components of the iron - cobalt - based toughness nanocrystalline soft magnetic alloy is expressed by the formula (Fe0.8Co0.2)aBbMc, wherein, M is Cr, Mo or Nb, a, b and c represent atom percentage of each component respectively, and a, b and c satisfies the condition that 84<=a<=87, 12<=b<=16, 0<=c<=2, and a+b<=+c=100. The iron - cobalt - based toughness nanocrystalline soft magnetic alloy is different from previous nanocrystalline soft magnetic alloy, namely the iron - cobalt - based toughness nanocrystalline soft magnetic alloy has a bending toughness though having an amorphous / nanocrystalline composite structure, and the iron - cobalt - based toughness nanocrystalline soft magnetic alloy won't be broken off with bending, therefore, the brittleness problem of the nanocrystalline soft magnetic alloy for bending is solved. At the same time, the alloy has a high saturation magnetic induction intensity and superior soft-magnetic performance, and excellent mechanical performance and machining processability, therefore, the alloy can be used for various iron core soft-magnetic materials.

Description

technical field [0001] The invention belongs to the field of magnetic functional materials, and specifically relates to an iron-cobalt-based ductile nanocrystalline soft magnetic alloy and a preparation method thereof. Background technique [0002] Iron-based amorphous alloy material is a new type of soft magnetic material, which controls the arrangement of liquid metal at the atomic level through rapid solidification, so that the atomic arrangement maintains the long-range disordered state of liquid metal. Due to the irregular atomic arrangement, long-range disorder, and no grain boundaries, amorphous soft magnetic materials have the advantages of low loss, excellent mechanical properties, magnetic properties, and corrosion resistance. [0003] Through the controllability of the evolution of nanocrystals from amorphous alloys, a soft magnetic material with an amorphous / nanocrystalline composite structure with better performance is obtained. For example, through proper anne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/153C22C45/02C22C38/10C22C38/12C22C38/32C22C38/18
CPCH01F1/15308C22C38/10C22C38/12C22C38/18C22C38/32C22C45/02H01F1/15316
Inventor 韩烨朱胜利井上明久崔振铎杨贤金
Owner TIANJIN UNIV