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Nitrogen-boron composite phase magnetic material and preparation method thereof

A technology of magnetic materials and composite phases, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problem of insufficient magnetic induction intensity, and achieve the effects of good stability and practicability, uniform organization, and strong structure

Active Publication Date: 2019-06-07
XUZHOU NANFANG YONGCI MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the residual magnetic induction of the material is not high enough

Method used

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  • Nitrogen-boron composite phase magnetic material and preparation method thereof
  • Nitrogen-boron composite phase magnetic material and preparation method thereof
  • Nitrogen-boron composite phase magnetic material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The preparation method of nitrogen-boron composite phase magnetic material of the present invention, the method comprises the following steps:

[0035] 1) Waste disposal:

[0036] First place the phosphor waste in a roasting furnace for pretreatment at a temperature of 650°C. The treatment temperature and holding time are 2 hours. After cooling, the waste is ball milled to 20-80 microns to obtain the pretreatment waste; then the pretreatment waste is added to a concentration of 7mol / L of hydrochloric acid, then add mass concentration of 30% hydrogen peroxide, and keep warm at 95°C for 2 hours; the mass volume ratio of pretreatment waste to hydrochloric acid is 1.5 kg / L, and the mass volume ratio of pretreatment waste to hydrogen peroxide is 0.3 kg / L; then soaked with water for 5 times to obtain acid-soluble slag for later use; take acid-soluble slag and mix evenly with a mass fraction of 15% Na2CO3, roast at 1000°C for 2 hours, and then treat with 4mol / L hydrochloric ...

Embodiment 2

[0045] The preparation method of nitrogen-boron composite phase magnetic material of the present invention, the method comprises the following steps:

[0046] 1) Waste disposal:

[0047] First place the waste phosphor powder in a roasting furnace for pretreatment at a temperature of 500°C. The treatment temperature and holding time are 1 hour. After cooling, the waste material is ball-milled to 20-80 microns to obtain the pretreated waste material; then the pretreated waste material is added to a concentration of 4 -7mol / L of hydrochloric acid, then add mass concentration of 30% hydrogen peroxide, and incubate at 95°C for 2 hours; the mass volume ratio of pretreatment waste to hydrochloric acid is 1.3kg / L, and the mass volume ratio of pretreatment waste to hydrogen peroxide is 0.2kg / L; then soaked with water for 3 times to obtain acid soluble slag for later use; take acid soluble slag and (mass fraction: 10%) Na2CO3, mix evenly, roast at 1000°C for 2h, and then treat with 4mol...

Embodiment 3

[0056] In this example, an alloy ingot of nitrogen-boron composite phase magnetic material is prepared: ingredients are prepared according to the following mass percentages: Nd28%, Y 2.8%, Eu 4.2%, Ce1.4%, Tb1.4%, B 3%, P 0.4%, Ba 0.2%, V 0.50%, the rest is Fe. All the other preparation conditions and processes are the same as in Example 1. The mass percent content of N in the material is 0.65%.

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Abstract

The invention provides a magnetic material containing a nitrogen-boron composite phase. The magnetic material is high in residual magnetic flux density; the preparation method is simple in process, low in production cost and suitable for industrial production. The permanent magnet material comprises the following components in percentage by mass: 24-30% of Nd, 2.4-3.0% of Y, 3.6-4.5% of Eu, 1.2-1.5% of Ce, 1.2-1.5% of Tb, 2-4% of B, 0.2-0.6% of P, 0.12-0.3% of Ba, 0.45-0.60% of V and the balance of Fe, wherein the permanent magnet material also comprises 0.55-0.86% of N in percentage by mass.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a nitrogen-boron composite phase magnetic material and a preparation method thereof. Background technique: [0002] CN201410682666.X discloses a rare earth permanent magnet material and a preparation method thereof, wherein the main composition of the rare earth permanent magnet material is (by weight percentage, wt%), PrNd 28-35%; one or both of Dy or Tb add up to 0 -5%; B1.0%; M0.01-10%, the balance is Fe, where M elements are titanium, tin, zirconium, copper, cobalt, niobium, aluminum, manganese, gallium, chromium, nickel, zinc, magnesium One or more of them, and when copper, cobalt, niobium, and aluminum exist, Co 0-3%; Al0.2-1.5%; Nb0-0.5%; Cu0-0.2%. But the residual magnetic induction of this material is not high enough. Contents of the invention [0003] The purpose of the present invention is to provide a nitrogen-boron composite phase magnetic material with high remanenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/059H01F1/08B22F3/02B22F3/10B22F3/24
CPCB22F3/02B22F3/10B22F3/24B22F2003/248B22F2998/10H01F1/059H01F1/08
Inventor 张作州
Owner XUZHOU NANFANG YONGCI MATERIAL
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