High tenacity magnetic materials and preparation method of the same

A magnetic material and high-toughness technology, applied in the field of high-toughness magnetic materials and preparation, can solve the problems that products cannot be NdFeB materials, insufficient fracture toughness of materials, etc., achieve high production and utilization value and comprehensive social benefits, improve mechanical properties, The effect of flexible composition ratio

Active Publication Date: 2013-05-08
江苏澳芯微电子有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

The main technical problem of this method is that its products cannot be directly used as raw materials for NdFe...

Method used

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  • High tenacity magnetic materials and preparation method of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare the high toughness magnetic material according to the following steps:

[0032] 1) Treatment of praseodymium and neodymium waste: mix praseodymium and neodymium waste in hydrochloric acid with a mass concentration of 25%, the mass ratio of praseodymium and neodymium waste to hydrochloric acid is 1:2.0, then add oxalic acid to the hydrochloric acid mixture and stir evenly, the oxalic acid and hydrochloric acid mixture The weight ratio was 2.5:1. The precipitate collected after 1 hour was dried at a temperature of 120° C. for 1 hour, and then kept at a temperature of 1050° C. for 1.5 hours to obtain a precipitated rare earth oxide.

[0033] 2) Grinding ingredients: determine the content of Nd, Pr and Sc in the precipitated rare earth oxide, add praseodymium oxide powder, neodymium oxide powder and scandium oxide powder to the precipitated rare earth oxide after the measurement to adjust the composition, and the adjusted precipitate rare earth oxide The weight ratio ...

Embodiment 2

[0040] Prepare the high toughness magnetic material according to the following steps:

[0041] 1) Treatment of praseodymium and neodymium waste: mix praseodymium and neodymium waste in hydrochloric acid with a mass concentration of 30%, the mass ratio of praseodymium and neodymium waste to hydrochloric acid is 1:2.0, then add oxalic acid to the hydrochloric acid mixture and stir evenly, the oxalic acid and hydrochloric acid mixture The weight ratio is 2.5:1. The precipitate collected after 1.5 hours was dried at 120°C for 1 hour, and then kept at 1100°C for 1 hour to obtain the precipitated rare earth oxide.

[0042] 2) Grinding ingredients: determine the content of Nd, Pr and Sc in the precipitated rare earth oxide, add praseodymium oxide powder, neodymium oxide powder and scandium oxide powder to the precipitated rare earth oxide after the measurement to adjust the composition, and the adjusted precipitate rare earth oxide The weight ratio of the three components Nd:Pr:Sc in...

Embodiment 3

[0049] When preparing NdFeB alloy ingots in step 4), the ingredients are distributed according to the following weight percentages: Nd 33%, Pr 3.3%, B 3%, Ta 0.144%, Hf 0.128%, W 0.032%, Sc 0.033%, and the rest is Fe .

[0050] All the other preparation processes are the same as in Example 1.

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Abstract

The invention discloses high tenacity magnetic materials and a preparation method of the high tenacity magnetic materials. The component percentages of the high tenacity magnetic materials comprise, by weight, 28-38% of neodymium (Nd), 2.8-3.8% of praseodymium (Pr), 1-4% of boron (B), 0.09-0.198% of tantalum (Ta), 0.08-0.176 % of hafnium (Hf), 0.02-0.044 % of wolfram (W) and 0.028-0.038% of scandium (Sc), and the rest is ferrum (Fe). The high tenacity magnetic materials have uniform textures and strong structures, and can not only improve tenacity performance of the materials but also improve magnetic performance. The preparation method fully utilizes praseodymium-neodymium waste materials to directly produce raw materials for alloy, is flexible in composition proportion, qualified in quality control, capable of reducing cost and simple in technology, and fully utilizes waste powder materials with high oxygen content.

Description

Technical field [0001] The invention is a functional material field involving a high -tough magnetic material and preparation method. [0002] Background technique [0003] 201210241995.1 Application to disclose a method of extracting rare earth from oxidized tin iron boron waste. The steps are: mixing the iron boron waste and water after grinding:Perform grinding; add acid immersion; solid solid liquid separation; extraction of iron removal; chloride rare earth; extraction separation of rare earth; extraction of aluminum removal; precipitation; burning.The application of this method for rare earth recycling increased by 5-8%of the rare earth recovery rate; and the value of rare earth after recovery was increased, reducing the production cost of further processing: effectively solved the "mud-shaped object" of melting salt when a single rare earth electrolyte.The problem improves the electrolytic efficiency of rare earth metals during electrolytic and can effectively reduce power...

Claims

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Application Information

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IPC IPC(8): H01F1/057C22C38/00C22C33/02
Inventor 王玲赵浩峰陈文兵郑泽昌邱奕婷陆阳平柯维雄赵佳玉王冰侯少杰王明一张林胡志鸿
Owner 江苏澳芯微电子有限公司
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