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High magnetic energy product function material containing rhodium and preparation method thereof

A high magnetic energy product, functional material technology, applied in magnetic materials, magnetic objects, electrical components, etc., can solve the problems of low magnetic energy product, inability to guarantee the stability of material structure and performance, and achieve uniform alloy composition and ensure uniform sintering. The effect of improving the coercivity and coercivity

Inactive Publication Date: 2014-03-26
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The magnetic energy product of the above invention is 10-14MGoe, and the magnetic energy product is relatively low. At the same time, the sintering method cannot guarantee the stability of the structure and performance of the material.

Method used

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  • High magnetic energy product function material containing rhodium and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of rhodium-containing high magnetic energy product functional material of the present invention, concrete steps are as follows:

[0028] (1) Take Nd 20%, Sm 1%, B 1%, Si 0.3%, Co 0.7%, Yb 0.5%, Pb 0.5%, P 0.5%, Rh 1% according to the following weight percentages, and the rest is Fe for batching ; wherein the purity of Nd, Sm, B, Si, Co, Yb, Pb, P, Rh and Fe is greater than 99.9%;

[0029] (2) Melting the raw materials in a vacuum induction furnace at a melting temperature of 1660°C and standing for 2 minutes to obtain a master alloy liquid;

[0030] (3) Cast the master alloy liquid onto the roller below the taphole of the induction furnace. The master alloy liquid encounters the rotating roller and is dragged by the roller rim to form a casting belt; the rotational speed of the roller rim is 8m / s; the thickness of the casting belt is about 1mm and the width is 15mm;

[0031] (4) Cool the cast strip naturally for 5 minutes, and then put the cast ...

Embodiment 2

[0036] The preparation method of rhodium-containing high magnetic energy product functional material of the present invention, concrete steps are as follows:

[0037] (1) Take Nd 23%, Sm 2%, B 2%, Si 0.5%, Co 1.2%, Yb 0.8%, Pb 0.8%, P 0.8%, Rh 2% according to the above weight percentage, and the rest is Fe for batching ; wherein the purity of Nd, Sm, B, Si, Co, Yb, Pb, P, Rh and Fe is greater than 99.9%;

[0038] (2) Melting the raw materials in a vacuum induction furnace at a melting temperature of 1700°C and standing for 3 minutes to obtain a master alloy liquid;

[0039] (3) Cast the master alloy liquid onto the roller below the taphole of the induction furnace. The master alloy liquid encounters the rotating roller and is dragged by the roller rim to form a casting belt; the rotational speed of the roller rim is 9m / s; the thickness of the casting belt is about 1.5mm, and the width is 10mm;

[0040] (4) Cool the cast strip naturally for 8 minutes, and then put the cast st...

Embodiment 3

[0045] The preparation method of rhodium-containing high magnetic energy product functional material of the present invention, concrete steps are as follows:

[0046] (1) Take Nd 22%, Sm 1.5%, B 1.5%, Si 0.4%, Co 0.9%, Yb 0.7%, Pb 0.7%, P 0.56%, Rh 1.5% according to the above weight percentage, and the rest is Fe for batching ; wherein the purity of Nd, Sm, B, Si, Co, Yb, Pb, P, Rh and Fe is greater than 99.9%;

[0047] (2) Melting the raw materials in a vacuum induction furnace at a melting temperature of 1780°C and standing for 4 minutes to obtain a master alloy liquid;

[0048] (3) Cast the master alloy liquid onto the roller below the taphole of the induction furnace. The master alloy liquid encounters the rotating roller and is dragged by the roller rim to form a casting belt; the rotational speed of the roller rim is 11m / s; the thickness of the casting belt is about 2mm and the width is 8mm;

[0049](4) Cool the cast strip naturally for 10 minutes, then put the cast st...

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Abstract

The invention belongs to the field of metal materials and particularly relates to a high magnetic energy product function material containing rhodium and a preparation method thereof. The material has high magnetic energy products. The preparation method is simple in technology, low in production cost and suitable for industrial production. The material comprises, by weight, 20-23% of Nd, 1-2% of Sm, 1-2% of B, 0.3-0.5% of Si, 0.7-1.2% of Co, 0.5-0.8% of Yb, 0.5-0.8% of Pb, 0.5-0.8% of P, 1-2% of Rh and the balance Fe.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a rhodium-containing high magnetic energy product functional material and a preparation method thereof. Background technique [0002] Application No. CN200710020515.8 discloses a preparation method of NdFeB magnetic powder, including a vacuum smelting process, a vacuum rapid quenching process, a crystallization process, and a sieving process. Between the crystallization process and the sieving process, an increase of A warm-pressing process is carried out, and the warm-pressing process is under the condition of 130-180° C. and a pressure of 60-150 MPa for 30-60 minutes. [0003] The magnetic energy product of the above invention is 10-14MGoe, the magnetic energy product is relatively low, and the sintering method cannot guarantee the stability of the structure and performance of the material. Contents of the invention [0004] The purpose of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/057C22C38/60
Inventor 张群王玲赵浩峰邱奕婷陆阳平何晓蕾王冰柯维雄赵佳玉宋超徐小雪赵圣哲徐兮周万鹏周璐
Owner NANJING UNIV OF INFORMATION SCI & TECH
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