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Soft magnetic Co-based bulk amorphous alloy with high saturation induction density and preparation method of amorphous alloy

A magnetic induction strength, amorphous alloy technology, applied in the direction of magnetic objects, magnetic materials, metal processing equipment, etc., can solve the problems of difficult amorphous formation ability and high cost of alloys, and achieve low preparation cost, low raw material cost, and low Hc Effect

Active Publication Date: 2020-06-02
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] For the existing Co-based bulk amorphous alloys contain former transition group elements or rare earth elements, it is difficult for the alloy to have both strong amorphous forming ability and high B s , the technical problem of high cost, the present invention provides a kind of do not contain former transition group element or rare earth element, have high B at the same time s and T c , low H c , a high-strength Co-based bulk amorphous alloy and a preparation method thereof, the amorphous alloy can be prepared by a copper mold casting method under air to obtain a bulk amorphous alloy rod with a diameter of 1 to 3 mm, and its B s 0.95~1.24T, H c 0.5~4.6A / m, μ at 1kHz e 16200~30600, T c 451~516℃, compressive yield strength is 3.2~3.6GPa, compressive plastic strain is 0.3~2.5%

Method used

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  • Soft magnetic Co-based bulk amorphous alloy with high saturation induction density and preparation method of amorphous alloy
  • Soft magnetic Co-based bulk amorphous alloy with high saturation induction density and preparation method of amorphous alloy
  • Soft magnetic Co-based bulk amorphous alloy with high saturation induction density and preparation method of amorphous alloy

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preparation example Construction

[0039] The present invention also provides a method for preparing the above-mentioned soft magnetic Co-based bulk amorphous alloy with high saturation magnetic induction, comprising the following steps:

[0040] Step 1: Ingredients

[0041] Select Co, Fe, Ni, Si, B, C and FeP alloy raw materials with a purity higher than 99% and weigh the ingredients according to the alloy composition ratio;

[0042] Step 2: Master alloy ingot smelting

[0043] Put the mixed raw materials weighed in step 1 into the crucible of the induction melting furnace, and smelt in an argon or nitrogen atmosphere to obtain a master alloy ingot with uniform composition; The master alloy ingot is obtained by smelting in an arc furnace under an atmosphere of argon or nitrogen;

[0044] Step 3: Preparation of bulk amorphous alloy

[0045] The master alloy ingot is crushed and put into a quartz tube, and the block sample is prepared by copper mold casting method, that is, the master alloy ingot is first hea...

Embodiment 1

[0047] Example 1: Co 40 Fe 35 B 15 Si 7 P 3

[0048] Step 1: Ingredients

[0049] Select Co, Fe, B, Si and Fe with a purity higher than 99% 3 P alloy raw materials are weighed and proportioned according to the alloy composition ratio;

[0050] Step 2: Prepare master alloy ingot

[0051] Put the mixed raw material weighed in step 1 into a graphite crucible placed in a vacuum induction melting furnace, and melt it under an argon or nitrogen atmosphere to obtain a master alloy ingot with uniform composition;

[0052] Step 3: Preparation of Amorphous Strips

[0053] The master alloy ingot was crushed and loaded into a quartz tube, and the quenched strip sample was prepared by the single-roll strip stripping method. That is, in an argon or nitrogen atmosphere, the master alloy ingot is first heated to a molten state by induction melting, and then the alloy melt is sprayed onto a high-speed rotating copper roller with a high-pressure gas. The copper roller line speed is abo...

Embodiment 2

[0060] Example 2: Co 50 Fe 25 B 15 Si 7 P 3

[0061] Step 1: Select Co, Fe, Si, B and Fe with a purity higher than 99% 3 Raw materials such as P alloy are weighed and proportioned according to the alloy composition ratio.

[0062] Steps 2, 3, 4, 5, and 6 are the same as in Example 1, and an amorphous rod with a diameter of 1.5 mm is finally obtained. Its performance data are shown in Table 1.

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Abstract

The invention provides a soft magnetic Co-based bulk amorphous alloy with high saturation induction density. The component formula of the alloy is CoaFebNicBdSiePfCg, a, b, c, d, e, f and g representatomic percent content of components respectively and meet following conditions: a is larger than 35 and smaller than or equal to 65, b is larger than or equal to 10 and smaller than or equal to 35, clarger than or equal to 0 and smaller than or equal to 5, the sum of b and c is larger than or equal to 10 and smaller than or equal to 35, d is larger than or equal to 5 and smaller than or equal to20, e is larger than or equal to 5 and smaller than or equal to 10, f is larger than or equal to 0 and smaller than or equal to 5, g is larger than or equal to 0 and smaller than or equal to 5, the sum of f and g is larger than or equal to 3, the sum of d, e, f and g is larger than or equal to 20 and smaller than or equal to 30, and the sum of a, b, c, d, e and f is equal to 100. The technical problems that the alloy cannot realize high amorphous forming ability and saturation magnetic induction (Bs) and cost are high due to the fact that existing Co-based bulk amorphous alloy contains pre-transition elements or rare earth element are solved.

Description

technical field [0001] The present invention relates to the technical field of new materials, in particular, to a kind of non-pre-transition group metal and rare earth element, with high saturation magnetic induction (B s ) and Curie temperature (T c ), low coercivity (H c ), a high-strength Co-based bulk amorphous alloy and a preparation method thereof. Background technique [0002] Amorphous alloy (also known as metallic glass) has physical, chemical and mechanical properties superior to general crystalline metal materials due to its unique long-range disordered and short-range ordered atomic arrangement structure, such as high strength and hardness, high toughness, Low elastic modulus, high resistivity, high corrosion resistance and superplastic processing formability in the supercooled liquid phase range, etc. For Fe and Co-based amorphous alloys, it also has excellent soft magnetic properties. Amorphous alloys have broad application prospects in the fields of energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/04B22C9/06B22D11/06H01F1/153
CPCC22C45/04B22C9/06B22D11/0611H01F1/15391C22C1/11
Inventor 张伟李艳辉黄大玮
Owner DALIAN UNIV OF TECH
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