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Fe-based soft magnetic amorphous alloy with high corrosion resistance and preparation method thereof

An amorphous alloy, high corrosion resistance technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of alloy saturation magnetic induction intensity and Curie temperature reduction, loss of ferromagnetism, etc., and achieve the effect of low raw material cost

Active Publication Date: 2013-03-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Problems solved by technology

Usually, in order to obtain iron-based bulk amorphous alloys with high corrosion resistance, a large amount of non-ferromagnetic elements must be added, which will lead to a decrease in the saturation magnetic induction and Curie temperature of the alloy, and even lose ferromagnetism at room temperature

Method used

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  • Fe-based soft magnetic amorphous alloy with high corrosion resistance and preparation method thereof
  • Fe-based soft magnetic amorphous alloy with high corrosion resistance and preparation method thereof
  • Fe-based soft magnetic amorphous alloy with high corrosion resistance and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-5

[0036] In the present embodiment 1-5, the iron-based soft magnetic amorphous alloy is an amorphous alloy strip or an amorphous alloy rod, and its molecular formula is Fe 71-x Cr x Ni 5 Mo 3.5 P 10 C 4 B 4 Si 2.5 , where x is 0, 1, 2, 3 or 4, see Table 1 below.

[0037] The specific preparation method of the above-mentioned iron-based soft magnetic amorphous alloy is as follows:

[0038] Step 1: According to the molecular formula Fe 71-x Cr x Ni 5 Mo 3.5 P 10 C 4 B 4 Si 2.5 (x=0,1,2,3,4) Raw materials Fe, Cr, Ni, Mo, P, C, B and Si are batched, specifically: convert the alloy atomic percentage to mass percentage, and weigh Fe in proportion , Cr, Ni, Mo, FeP, FeC, B, Si, where P and C are added in the form of FeP and FeC alloys respectively, and the purity of the rest of the raw materials is greater than 99%;

[0039] Step 2: Put the raw materials prepared in step 1 into the high-frequency induction melting furnace, and vacuumize to 5×10 -3 Pa, fill in an approp...

Embodiment 6

[0053] This embodiment adopts 1J36 alloy. Its performance was measured according to the measurement method in Examples 1-5, and the results were shown in the table above.

[0054] It can be seen from the above table that compared with the 1J36 alloy, the iron-based soft magnetic amorphous alloys in Examples 2-5 of the present invention have high corrosion resistance, high amorphous forming ability and excellent magnetic properties.

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Abstract

The invention discloses a preparation method of a Fe-based soft magnetic amorphous alloy with high corrosion resistance and a preparation method thereof. The Fe-based soft magnetic amorphous alloy has a molecular formula of FeaCrbNicModPeCfBgSih; and a, b, c, d, e, f, g and h represent the molar percentage of corresponding atoms and satisfy the following relations: 60<=a<=80; 0.5<=b<=4; 2<=c<=12; 2.5<=d<=4.5; 8.5<=e<=11.5; 2.5<=f<=5.5; 3<=g<=6; 1<=h<=4; and a+b+c+d+e+f+g+h=100. Compared with existing Fe-based soft magnetic amorphous alloy, the amorphous alloy has high corrosion resistance, high amorphous forming ability and excellent magnetic properties, and can be used as an electromagnetic device material in harsh environments, such as corrosive media comprising hot and humid salt spray, ammonia or various acids, sea water and sewage.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials and their preparation, and in particular relates to an iron-based soft magnetic amorphous alloy material with excellent corrosion resistance, high amorphous forming ability and excellent magnetic properties and a preparation method thereof. Background technique [0002] In industrial applications, electromagnetic devices used in many mechanical and electronic equipment often work in harsh environments, such as hot and humid salt spray, ammonia gas or various acids, sea water, sewage and other corrosive media. These devices require good corrosion resistance to various media or gases. [0003] At present, the corrosion-resistant alloys used in China are mainly Fe-Cr alloys (brands 1J116, 1J117) and Fe-Ni alloys (brand 1J36). In the Fe-Cr alloy, the Cr element can form a dense and uniform passivation film and improve the corrosion resistance of the alloy. However, studies have shown that...

Claims

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Application Information

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IPC IPC(8): C22C45/02H01F1/153
Inventor 沈宝龙张明晓
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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