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Composite coating, coating equipment and coating method

A technology of composite coating and coating equipment

Active Publication Date: 2021-01-15
SANVAC BEIJING MAGNETICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the magnet after its diffusion is insufficient, and the consistency of the magnetic properties of the magnets produced in large quantities is not good.

Method used

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  • Composite coating, coating equipment and coating method
  • Composite coating, coating equipment and coating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Process A: Magnet Preparation Process

[0104] Step 1, prepare main alloy raw materials and auxiliary alloy raw materials according to the mass ratio of each element, and the mass ratio of each element of the main alloy raw materials is (PrNd) 31 Al 0.2 co 1.0 Cu 0.1 Ga 0.51 B 0.97 Fe bal , the mass ratio of each element of the auxiliary alloy raw material is (PrNd) 32.5 Al 0.15 co 1.0 Cu 0.1 Ga 0.51 B 0.89 Fe bal . Fe bal It is the balance ratio of Fe element, that is, the sum of the mass ratios of all elements is 100%.

[0105] Step 2. Melt the main alloy raw material and the auxiliary alloy raw material in a 600Kg / time stripcasting furnace (stripcasting), and perform scale casting at a roller speed of 1.5m / s per second, and finally obtain the average thickness 0.15mm main alloy flakes and auxiliary alloy flakes.

[0106] Step 3. The main alloy flakes and the auxiliary alloy flakes are subjected to hydrogen crushing, specifically dehydrogenation at 540...

Embodiment 2

[0152] Process A: Magnet preparation process:

[0153] The magnet preparation process is the same as in Example 1, but the magnet does not undergo the tempering heat treatment in step 7 before slicing.

[0154] Process B: Sputtering process for surface coating of magnets

[0155] Step 1. Place the tray on the sampling table, arrange the magnets processed in process A tightly on the stainless steel tray, make the direction of the magnet size 2mm upward, and the size of the tray is 1300×1000mm. Compressed air is required to clean the magnet surfaces.

[0156] Step 2. Pre-evacuate the sampling chamber, the second buffer chamber, and the cooling chamber to 10 -1 Pa, pre-evacuate the cleaning chamber, coating chamber and first buffer chamber to 7×10 -3 Pa, and then pass argon gas to the cleaning chamber, coating chamber, and first buffer chamber, and the stable pressure is 0.6MPa.

[0157] Step 3. Use the tray to send the arranged magnets into the sampling chamber, and vacuum t...

Embodiment 3

[0172] Process A: Magnet preparation process:

[0173] The magnet preparation process is the same as in Example 1, but the magnet does not undergo the tempering heat treatment in step 7 before slicing.

[0174] Process B: Sputtering process for surface coating of magnets

[0175] Step 1. Place the tray on the sampling table, arrange the magnets processed in process A tightly on the stainless steel tray, make the direction of the magnet size 2mm upward, and the size of the tray is 1300×1000mm. Compressed air is required to clean the magnet surfaces.

[0176] Step 2. Pre-evacuate the sampling chamber, the second buffer chamber, and the cooling chamber to 10 -1 Pa, pre-evacuate the cleaning chamber, coating chamber and first buffer chamber to 7×10 -3 Pa, and then pass argon gas to the cleaning chamber, coating chamber, and first buffer chamber, and the stable pressure is 0.7MPa.

[0177] Step 3. Use the tray to send the arranged magnets into the sampling chamber, and vacuum t...

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Abstract

The invention discloses a composite coating formed on the surface of an NdFeB rare earth magnet, coating equipment and a coating method. The coating equipment includes a coating chamber, and a target is installed on the top of the coating chamber, wherein the target includes a first target and a second target; the first target is an Nd target, or a Pr target, or an Nd target. , Pr, and Cu at least two or more alloy targets; the second target is a Tb target; the first target is located in front of the second target. The coating equipment and the coating method of the invention improve the use efficiency of heavy rare earth metals.

Description

technical field [0001] The invention belongs to the field of mechanical equipment, and in particular relates to a composite coating for manufacturing rare earth magnets, coating equipment and a coating method. Background technique [0002] Sintered NdFeB magnets have excellent magnetic properties and are widely used in electronic information, automobile industry, medical equipment, energy transportation and other fields. In recent years, there have been new applications in energy-saving and environmental protection fields such as wind power generation, energy-saving home appliances and new energy vehicles. Many of these applications require magnets to have better heat resistance, not only require magnets to have a higher maximum energy product (BH)max, but also require a high intrinsic coercive force Hcj, in order to reduce the Compared with the irreversible demagnetization in the environment with high temperature, it can ensure that the magnet still maintains high magnetic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/34C23C14/56C23C14/16
CPCC23C14/34C23C14/568C23C14/165C23C14/022C23C14/3464C23C14/02B32B15/01B32B2307/208H01F1/057H01F41/0253
Inventor 陈国安方彬王浩颉赵玉刚
Owner SANVAC BEIJING MAGNETICS
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