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FeCoNi-based soft magnetic high-entropy alloy and application thereof

A high-entropy alloy and soft magnetic technology, which is applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of poor mechanical properties and magnetic properties of magnetic materials, loose and other problems, and achieve good strip formability, loose annealing conditions, Good comprehensive soft magnetic properties

Inactive Publication Date: 2019-04-05
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention will solve the problem of poor mechanical properties and magnetic properties of traditional magnetic materials. In order to solve the above problems, the present invention provides a FeCoNi-based soft magnetic high-entropy alloy, which has high tensile yield strength and high tensile strength. Plasticity, excellent soft magnetic properties, excellent and stable magnetic permeability under high frequency conditions, high saturation magnetic induction and low coercive force, and its low cost and loose preparation process conditions

Method used

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  • FeCoNi-based soft magnetic high-entropy alloy and application thereof
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  • FeCoNi-based soft magnetic high-entropy alloy and application thereof

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Embodiment 1

[0035] A FeCoNi-based soft magnetic high-entropy alloy Fe 29.42 co 29.41 Ni 29.41 Si 5.88 Cr 5.88 (at%), as a more detailed example, its preparation method includes the following steps:

[0036] (1) Ingredients: select Fe with a purity of 99.9wt%, Co with a purity of 99.99wt%, Ni with a purity of 99.99wt%, Si with a purity of 99.99wt%, and Cr with a purity of 99.99wt%, expressed according to the above alloy Before weighing the raw materials, remove the oxide film on the raw materials with sandpaper or a grinder, then put Fe, Co, Ni and other raw materials into a beaker filled with absolute ethanol, and perform ultrasonic cleaning for 250S. Then dry it completely with a hair dryer;

[0037] (2) Melting the master alloy: Put the prepared master alloy components into the water-cooled copper crucible of the non-consumable vacuum arc melting furnace, put the alloy elements with high density and high melting point on it, first use the mechanical pump to vacuum the furnace cavit...

Embodiment 2

[0040] A FeCoNi-based soft magnetic high-entropy alloy Fe 29.42 co 29.41 Ni 29.41 Si 5.88 mn 5.88 (at%), as a more detailed example, its preparation method includes the following steps:

[0041] (1) Ingredients: select Fe with a purity of 99.9wt%, Co with a purity of 99.99wt%, Ni with a purity of 99.99wt%, Si with a purity of 99.99wt%, and Mn with a purity of 99.99wt%, according to the above alloy expression Before weighing the raw materials, remove the oxide film on the raw materials with sandpaper or a grinder, then put Fe, Co, Ni and other raw materials into a beaker filled with absolute ethanol, and perform ultrasonic cleaning for 250S. Then dry it completely with a hair dryer;

[0042] (2) Melting the master alloy: Put the prepared master alloy components into the water-cooled copper crucible of the non-consumable vacuum arc melting furnace, put the alloy elements with high density and high melting point on it, first use the mechanical pump to vacuum the furnace cavi...

Embodiment 3

[0045] A FeCoNi-based soft magnetic high-entropy alloy Fe 29.42 co 29.41 Ni 29.41 Si 5.88 Cu 5.88 (at%), as a more detailed example, its preparation method includes the following steps:

[0046] (1) Ingredients: select Fe with a purity of 99.9wt%, Co with a purity of 99.99wt%, Ni with a purity of 99.99wt%, Si with a purity of 99.99wt%, and Cu with a purity of 99.99wt%, according to the above alloy expression Before weighing the raw materials, remove the oxide film on the raw materials with sandpaper or a grinder, then put Fe, Co, Ni and other raw materials into a beaker filled with absolute ethanol, and perform ultrasonic cleaning for 250S. Then dry it completely with a hair dryer;

[0047] (2) Melting the master alloy: Put the prepared master alloy components into the water-cooled copper crucible of the non-consumable vacuum arc melting furnace, put the alloy elements with high density and high melting point on it, first use the mechanical pump to vacuum the furnace cavi...

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Abstract

The invention relates to a FeCoNi-based soft magnetic high-entropy alloy and an application thereof. The alloy expression of the FeCoNi-based soft magnetic high-entropy alloy is FeCoNi cSidXe, whereina, b, c, d, e and f in the alloy expression respectively represent the atomic percentage contents of the corresponding components, the following conditions are satisfied of that a is 25 to 35, b is 25 to 35, c is 25 to 35, d is 4 to 8, e is 2 to 8, a + b + c + d + e is equal to 100, wherein the alloy expression of the X is Cr, Mn, Cu or Ga, and the FeCoNi-based soft magnetic high-entropy alloy isapplied to preparation of a transformer iron core, a high-frequency inductor, a stable power switch and a high-temperature magnetic material device. The FeCoNi-based soft magnetic high-entropy alloydisclosed by the invention has high tensile yield strength, high tensile plasticity and high saturation magnetic induction intensity, low in coercive force, high in magnetic conductivity and excellentin corrosion resistance, good in formability and loose in preparation process condition.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic high-entropy alloys, in particular to a FeCoNi-based soft magnetic high-entropy alloy and its application. Background technique [0002] Alloy design has long been a research hotspot for metallurgists and materials scientists. Historically, alloys have been designed based on one or two basic elements, with other small additions usually to improve certain properties of certain alloys. As we all know, steel is based on the element Fe, while Cr is used to improve its corrosion resistance, and the addition of boron improves the mechanical properties of the alloy. Until 2004, Professor Ye Junwei from Taiwan, China broke through the traditional alloy design concept, and proposed that when designing alloy composition, it is no longer limited to one or two main elements, but contains a variety of alloying elements, and the atoms of each alloying element The percentages are equal or approximately e...

Claims

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Application Information

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IPC IPC(8): C22C45/00C22C1/02C22F1/00H01F1/153
CPCH01F1/15308H01F1/15341C22C1/02C22C45/008C22F1/00C22C1/11
Inventor 李福山张航杨要轩魏然陈辰王坦张许行刘磊刘士磊
Owner ZHENGZHOU UNIV
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