Preparation method of sintered nd-fe-b magnet surface wearproof anticorrosive coating

A kind of anti-corrosion coating, NdFeB technology, applied in the device, coating, special surface and other directions of coating liquid on the surface, can solve the problems of unsatisfactory protection effect, high equipment investment cost, environmental pollution and so on

Active Publication Date: 2018-04-20
EARTH PANDA ADVANCE MAGNETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electroplating and chemical plating will bring environmental pollution problems, and the coating has poor corrosion resistance and low chemical stability, and the protective effect is not ideal; the application of physical vapor deposition coatings on the surface of sintered NdFeB magnets is not mature, and the early stage

Method used

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  • Preparation method of sintered nd-fe-b magnet surface wearproof anticorrosive coating

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Effect test

Embodiment 1

[0023] A method for preparing a wear-resistant and anti-corrosion coating on the surface of a sintered NdFeB magnet is carried out according to the following steps:

[0024] (1) Preparation of wear-resistant and anti-corrosion coating materials: first, the organic polymer materials polypropylene, polyethylene and polystyrene are prepared in a weight ratio of 1:1:2; then the nano-ceramic materials boron nitride, nitride Aluminum and titanium nitride are prepared in a weight ratio of 1:3:2, and the size of the nano-ceramic material is 10nm; finally, the prepared organic polymer material and nano-ceramic material are prepared in a weight ratio of 3:0.5; at the same time Add 0.1% accelerator for polyurethane adhesive, 0.2% aromatic amine curing agent and 0.3% silicate lubricant to the total weight of organic polymer materials and nano-ceramic materials; Layer materials are mixed thoroughly.

[0025] (2) Coating treatment: first, preheat the sintered NdFeB magnet to 60°C, and then...

Embodiment 2

[0028] A method for preparing a wear-resistant and anti-corrosion coating on the surface of a sintered NdFeB magnet is carried out according to the following steps:

[0029] (1) Preparation of wear-resistant and anti-corrosion coating materials: first, the organic polymer materials polypropylene, polyethylene and polystyrene are prepared in a weight ratio of 2:3:3; then the nano-ceramic materials boron nitride, nitride Aluminum, zirconia and titanium nitride are prepared in a weight ratio of 1:2:5:3, wherein the size of the nano-ceramic material is 50nm; then the prepared organic polymer material and nano-ceramic material are prepared in a weight ratio of 4: 1 is prepared; then add 0.3% fast solid acrylate structural adhesive accelerant, 0.5% alicyclic amine curing agent and 0.5% phosphate Lubricant; Finally, fully mix the wear-resistant and anti-corrosion coating materials.

[0030] (2) Coating treatment: first, preheat the sintered NdFeB magnet to 80°C, and then use the ele...

Embodiment 3

[0033] A method for preparing a wear-resistant and anti-corrosion coating on the surface of a sintered NdFeB magnet is carried out according to the following steps:

[0034] (1) Preparation of wear-resistant and anti-corrosion coating materials: first, the organic polymer materials polypropylene, polyethylene and polystyrene are prepared in a weight ratio of 3:5:4; then zirconia is prepared as a nano-ceramic material, The size of the nano-ceramic material is 100nm; the organic polymer material and the nano-ceramic material are prepared in a weight ratio of 5:2; then 0.5% of the total weight of the organic polymer material and the nano-ceramic material is added to it. Accelerator for acrylate structural adhesive, 0.8% aromatic amine curing agent and 0.7% silicate lubricant; finally, fully mix the wear-resistant and anti-corrosion coating material.

[0035] (2) Coating treatment: first, preheat the sintered NdFeB magnet to 100°C, and then use the electrostatic spraying process t...

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Abstract

The invention relates to a preparation method of a sintered nd-fe-b magnet surface wearproof anticorrosive coating. The preparation method comprises the following steps: preparing the wearproof anticorrosive coating material; preheating a sintered nd-fe-b magnet; and then, adopting the electrostatic spraying technology to coat the surface of the sintered nd-fe-b magnet with the prepared wearproofanticorrosive coating material and finally carrying out curing treatment. According to the preparation method, the wearproof anticorrosive coating is prepared on the surface of the sintered nd-fe-b magnet; the wearproof anticorrosive coating prepared by combining the respective advantage of organic polymer materials and nano-ceramics has higher mechanical property and corrosion resisting property,can provide longer corrosion prevention function to the sintered nd-fe-b magnet and can meet the using requirements of the working environment with strength and hardness requirements.

Description

technical field [0001] The invention relates to the field of surface protection of magnetic materials, in particular to a method for preparing a wear-resistant and anti-corrosion coating on the surface of a sintered NdFeB magnet. Background technique [0002] Sintered NdFeB magnets have excellent remanence, coercive force and magnetic energy product, and are known as the contemporary "Magnetic King", so they are widely used in many fields such as hardware appliances, medical equipment, wind power generation, automobiles, aerospace, cutting-edge technology, etc. . Sintered NdFeB magnets are the pillars of rare earth permanent magnet materials, but sintered NdFeB magnets are composed of the main phase Nd 2 Fe 14 B. Composed of Nd-rich phase and B-rich phase, the metal Nd element has the strongest chemical activity and is easily corroded in humid, high temperature and electrochemical environments, which severely limits the further expansion of the application field of sintere...

Claims

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Application Information

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IPC IPC(8): B05D5/08B05D5/00B05D7/24B05D1/04
CPCB05D1/04B05D5/00B05D5/08B05D7/24B05D2507/01B05D2507/02B05D2601/20B05D2602/00
Inventor 曹玉杰张鹏杰吴玉程黄秀莲陈静武衣晓飞
Owner EARTH PANDA ADVANCE MAGNETIC MATERIAL
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