Document
Surface Treatment of Sintered Neodymium Magnet
Question
Introduction to Coating Classification Table
2011-12-12 12:15:59
Neodymium iron boron is a high-performance magnetic material. The surface coating treatment can prevent oxidation, improve stability, wear resistance, and aesthetics of neodymium iron boron surface.
Question
Surface Treatment Classifications of Sintered Neodymium Magnet
2011-12-12 12:15:59
| Surface Treatment Classifications | |||||
| Coating | Thickness | Appearance | SST （hrs） |
PCT （hrs） |
Peculiarity |
| Blue white zinc | 4-10 | Blue-white | ≥24 | - | It has good environmental protection and poor corrosion resistance. |
| Colored zinc | 4-10 | Chroma | ≥48 | - | Corrosion resistance is better than blue and white zinc. |
| nickel Copper Nickel | 5-20 | Silver | ≥48 | ≥48 | Most commonly used multilayer coatings have strong resistance to heat and moisture and salt spray. |
| Nickel Copper Nickel + Tin | 5-20 | Silver | ≥72 | ≥96 | Excellent resistance to moisture and heat. |
| Black nickel | 5-20 | Black silver | ≥48 | ≥48 | Good decorative appearance and corrosion resistance. |
| Chemical nickel | 8-15 | Dark silver | ≥72 | ≥48 | Uniform appearance, excellent resistance to heat and moisture and salt spray. |
| Nickel + Gold | 5-20 | Golden | ≥72 | ≥96 | It has excellent electrical conductivity and decoration. |
| Epoxy resin | 10-30 | Black/Grey | ≥72 | ≥24 | Excellent resistance to heat and moisture and salt spray, strong binding force. |
| Phosphating/passivation | 1-2 | Dark grey | - | - | Temporary protection. |
| Perirelin | 5-20 | Transparent | ≥96 | - | Uniform appearance, dense without holes, with excellent moisture resistance. |
| Teflon | 8-15 | Black gray | ≥24 | ≥24 | The surface is lubricated, and the corrosion resistance and friction are good. |
| Note: The SST and PCT of the product depend on the actual shape and test environment. | |||||
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