CN102864362A - Nanocrystalline magnetically soft alloy material and preparation method thereof - Google Patents
Nanocrystalline magnetically soft alloy material and preparation method thereof Download PDFInfo
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- CN102864362A CN102864362A CN2012103341032A CN201210334103A CN102864362A CN 102864362 A CN102864362 A CN 102864362A CN 2012103341032 A CN2012103341032 A CN 2012103341032A CN 201210334103 A CN201210334103 A CN 201210334103A CN 102864362 A CN102864362 A CN 102864362A
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Abstract
The invention relates to a nanocrystalline magnetically soft alloy material, which consists of the following components in atomic composition percentage by weight at total atomic weight: 43-43.5% of iron, 43-43.5% of cobalt, 0.8-1.2% of copper, 6.5-7.5% of boron and 4-5% of X, wherein X comprises niobium, samarium and gadolinium.
Description
Technical field
The invention belongs to the magnetic functional material technical field, refer to especially a kind of nanocrystalline magnetically soft alloy material and preparation method.
Background technology
Soft magnetic materials is because coercive force is little, easily magnetization and demagnetization are widely used in the magnetically permeable material field, such as aspects such as computer, mobile phone, plane technique of display, reach in the devices such as various magnetic amplifiers, filter coil, variable-frequency electric sensor, variable-frequency transformer, inverter, energy storage inductance.
Present soft magnetic materials is mainly soft magnetic ferrites, and its Curie temperature is low, and when temperature Saturation magnetic sense intensity more than 100 ℃ the time descends obviously, so its use temperature scope is restricted; Moreover its Saturation magnetic sense intensity is low, has limited its popularization in miniaturization and complanation.
Nano crystal soft magnetic material, because the singularity of its structure makes it to possess high magnetic permeability, the performances such as high saturation and magnetic intensity and low-coercivity obtain common concern.The nanocrystalline magnetically soft alloy material that use on the reality border is normally standby by the Amorphous Crystallization legal system, and its shape and size are extremely restricted, and the nano crystal soft magnetic material that obtain bulk must be pulverized rear sintering to non-crystaline amorphous metal.But sintering temperature is high usually, and the time is long, and the crystal grain that obtains is long, causes the non-retentive alloy performance not good.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can realize that crystal grain is little, and possess nanocrystalline material and the preparation method of high saturation and magnetic intensity and high-curie temperature.
The present invention is achieved by the following technical solutions:
Nanocrystalline magnetically soft alloy material, it forms the total atom amount in each component, and the atom of each composition forms the percentage composition ratio and is: the iron of 43-43.5%, the cobalt of 43-43.5%, the copper of 0.8-1.2%, the boron of 6.5-7.5%, the X of 4-5%; Described X includes niobium, samarium and gadolinium.
It is 1: 1 that described iron and cobalt form the percentage composition ratio by atom.
Described niobium, it is 2.5: 1.5: 1 that samarium and gadolinium form the percentage composition ratio by atom.
The preparation method of nanocrystalline magnetically soft alloy material comprises the steps:
1), the preparation iron-X master alloy, in iron-X master alloy, the weight percent that X accounts for master alloy is 15%;
2), with iron, cobalt, copper, boron and step 1) master alloy press atomic percent batching, under arc heating furnace 1000-1300 ℃, make alloy pig through the melting cooling;
3), with step 2) alloy pig that makes makes amorphous thin ribbon after cutting, and with this strip through 250-450 ℃, the time is to pulverize after the thermal treatment in 1-2 hour, powder particle diameter is 20-40nm;
4) with step 3) powder after pulverizing puts into mould, at 50-55MPa, 750-780 ℃ lower sintering 8-8.5 minute.
The invention has the beneficial effects as follows:
By the technical program, crystal particle diameter has between higher Curie temperature 580-680 ℃, between the higher saturation magnetization 1.70-1.95T less than 70nm.
Embodiment
Below describe technical scheme of the present invention in detail by specific embodiment.
Embodiment 1
Calculate the amount of required component, select the iron of purity about 99.5-99.9%, cobalt, copper, boron, it is that 15% standard system gets master alloy with the iron weight percent that X is accounted for X with iron by X, described master alloy is processed into bulk; Select the atom percentage composition to be: 43% iron, 43% cobalt, 0.8% copper, 6.5% boron, 4% X; Described X includes niobium, samarium and gadolinium; Described niobium, it is 2.5: 1.5: 1 that samarium and gadolinium form the percentage composition ratio by atom; It is 1: 1 that described iron and cobalt form the percentage composition ratio by atom.With iron, cobalt, copper, boron and master alloy are pressed the atomic percent batching, make alloy pig through the melting cooling under arc heating furnace 1000-1300 ℃; The alloy pig that makes is made amorphous thin ribbon after cutting, and with this strip through 450 ℃, the time is to pulverize after the thermal treatment in 2 hours, powder particle diameter is 20-40nm; Powder after pulverizing is put into mould, at 55MPa, 750 ℃ lower sintering 8-8.5 minute.
Embodiment 2
Calculate the amount of required component, select the iron of purity about 99.5-99.9%, cobalt, copper, boron, it is that 15% standard system gets master alloy with the iron weight percent that X is accounted for X with iron by X, described master alloy is processed into bulk; Select the atom percentage composition to be: 43.5% iron, 43.5% cobalt, 1.2% copper, 7.5% boron, 5% X; Described X includes niobium, samarium and gadolinium; Described niobium, it is 2.5: 1.5: 1 that samarium and gadolinium form the percentage composition ratio by atom; It is 1: 1 that described iron and cobalt form the percentage composition ratio by atom.With iron, cobalt, copper, boron and master alloy are pressed the atomic percent batching, make alloy pig through the melting cooling under arc heating furnace 1000-1300 ℃; The alloy pig that makes is made amorphous thin ribbon after cutting, and with this strip through 400 ℃, the time is to pulverize after the thermal treatment in 2 hours, powder particle diameter is 20-40nm; Powder after pulverizing is put into mould, at 50MPa, 780 ℃ lower sintering 8-8.5 minute.
Embodiment 3
Calculate the amount of required component, select the iron of purity about 99.5-99.9%, cobalt, copper, boron, it is that 15% standard system gets master alloy with the iron weight percent that X is accounted for X with iron by X, described master alloy is processed into bulk; Select the atom percentage composition to be: 43.3% iron, 43.3% cobalt, 1.0% copper, 7% boron, 4.5% X; Described X includes niobium, samarium and gadolinium; Described niobium, it is 2.5: 1.5: 1 that samarium and gadolinium form the percentage composition ratio by atom; It is 1: 1 that described iron and cobalt form the percentage composition ratio by atom.With iron, cobalt, copper, boron and master alloy are pressed the atomic percent batching, make alloy pig through the melting cooling under arc heating furnace 1000-1300 ℃; The alloy pig that makes is made amorphous thin ribbon after cutting, and with this strip through 350 ℃, the time is to pulverize after the thermal treatment in 2 hours, powder particle diameter is 20-40nm; Powder after pulverizing is put into mould, at 55MPa, 750 ℃ lower sintering 8-8.5 minute.
Claims (4)
1. nanocrystalline magnetically soft alloy material, the total atom amount that it forms in each component is characterized in that: the atom of each composition forms the percentage composition ratio and is: the iron of 43-43.5%, the cobalt of 43-43.5%, the copper of 0.8-1.2%, the boron of 6.5-7.5%, the X of 4-5%; Described X includes niobium, samarium and gadolinium.
2. nanocrystalline magnetically soft alloy material according to claim 1 is characterized in that: it is 1: 1 that described iron and cobalt form the percentage composition ratio by atom.
3. nanocrystalline magnetically soft alloy material according to claim 1 is characterized in that: described niobium, it is 2.5: 1.5: 1 that samarium and gadolinium form the percentage composition ratio by atom.
4. the preparation method of described nanocrystalline magnetically soft alloy material according to claim 1 is characterized in that: comprise the steps:
1), the preparation iron-X master alloy, in iron-X master alloy, the weight percent that X accounts for master alloy is 15%;
2), with iron, cobalt, copper, boron and step 1) master alloy press atomic percent batching, under arc heating furnace 1000-1300 ℃, make alloy pig through the melting cooling;
3), with step 2) alloy pig that makes makes amorphous thin ribbon after cutting, and with this strip through 250-450 ℃, the time is to pulverize after the thermal treatment in 1-2 hour, powder particle diameter is 20-40nm;
4) with step 3) powder after pulverizing puts into mould, at 50-55MPa, 750-780 ℃ lower sintering 8-8.5 minute.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864358A (en) * | 2012-09-10 | 2013-01-09 | 虞雪君 | Nano-crystalline soft magnetic material and preparation method |
| CN105349919A (en) * | 2015-11-03 | 2016-02-24 | 顾建 | Nanocrystalline magnetic alloy material |
| CN105349918A (en) * | 2015-11-03 | 2016-02-24 | 顾建 | Nanocrystalline magnetic alloy material and preparation method |
| CN106683818A (en) * | 2016-11-16 | 2017-05-17 | 俞虹 | Nano-crystalline soft magnetic soft alloy material |
| CN106782983A (en) * | 2016-11-16 | 2017-05-31 | 俞虹 | Nanocrystalline magnetically soft alloy material and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620906A (en) * | 2009-06-10 | 2010-01-06 | 中国科学院上海硅酸盐研究所 | Block-shaped nanocrystalline magnetically soft alloy material and preparation method thereof |
| CN102864358A (en) * | 2012-09-10 | 2013-01-09 | 虞雪君 | Nano-crystalline soft magnetic material and preparation method |
-
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- 2012-09-10 CN CN2012103341032A patent/CN102864362A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620906A (en) * | 2009-06-10 | 2010-01-06 | 中国科学院上海硅酸盐研究所 | Block-shaped nanocrystalline magnetically soft alloy material and preparation method thereof |
| CN102864358A (en) * | 2012-09-10 | 2013-01-09 | 虞雪君 | Nano-crystalline soft magnetic material and preparation method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864358A (en) * | 2012-09-10 | 2013-01-09 | 虞雪君 | Nano-crystalline soft magnetic material and preparation method |
| CN105349919A (en) * | 2015-11-03 | 2016-02-24 | 顾建 | Nanocrystalline magnetic alloy material |
| CN105349918A (en) * | 2015-11-03 | 2016-02-24 | 顾建 | Nanocrystalline magnetic alloy material and preparation method |
| CN106683818A (en) * | 2016-11-16 | 2017-05-17 | 俞虹 | Nano-crystalline soft magnetic soft alloy material |
| CN106782983A (en) * | 2016-11-16 | 2017-05-31 | 俞虹 | Nanocrystalline magnetically soft alloy material and preparation method |
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Application publication date: 20130109 |