Neodymium Magnet Surface Treatment
Description
12 Years' Professional Rare Earth Magnet Manufacturer
Rare earth ndfeb magnet surface treatment
Rare earth NdFeB magnet surface treatment: to improve the anti-corrosion performance of magnet, please chose following coating according to the demand.
Different surface treatment technology
- Salt spray test: 37, 39 degrees · 5% NaCl · PH6.5 7.0 1.5 ml/Hr
- PCT (high pressure aging test): 120 - degree, 2 ATM, 100% RH, 12 hr.
| Coating | Thickness(mm) | SST(Hr) | Porosity | Demagnetize ratio | Color | PCT (Hr) |
|---|---|---|---|---|---|---|
| H500-A | 5-100 | >500 | - | - | muti-color | >100 |
| H500-B | 5-50 | >400 | - | - | muti-color | >100 |
| Zn | 10-15 | >24 | <0.1 | <0.2% | Bright Blue | >16 |
| Colour-Zn | 10-15 | 72 | <0.1 | <0.1% | muti-color | >24 |
| Ni | 10-20 | 4 | <0.5 | <0.3% | Sliver | >16 |
| Double-Ni | 15-20 | 24 | <0.2 | <0.3% | Sliver | >16 |
| Ni-Cu-Ni | 15-30 | >48 | <0.1 | <0.1% | Sliver | >42 |
| Zn-Ni Alloy | 10-20 | >720 | <0.1 | <0.1% | Muti-color | >72 |
| EPOXY | 10-50 | >300 | - | - | Block | >24 |
| Electroless Ni | <1 | >72 | - | - | Sliver | >24 |
Appearance and features
| φ10mm×10mm | Coating | Features | Application |
|---|---|---|---|
 | 3CrZn | Chromate treatment.Hexavalent chromium as environmental damage is limited, replaced by trivalent chromium. | ·Electronic components ·tools parts |
 | Ag | Good electrical conductivity and low contact resistance, welding performance is good, but easy to fade. | ·Electronic components |
 | Au | Excellent corrosion and oxidation resistance and low resistance. | ·Electronic components ·connecting device ·tableware |
 | Cr | Excellent abrasion resistance, oxidation resistance, even when it is exposed to the air can also keep good luster. | ·exterior parts ·medical supplies ·AV equipment |
 | Cu | Easy to change color, are often used in the bottom line, fill uneven area. | ·casting products ·ABS resin substrate |
 | Ni | Chemical stability, good rust-proof effect. Wide Application, in terms of metal plating, nickel plating is very widespread use. | ·Electronic components ·jewelry accessories |
 | NiBlack | An alloy of nickel and zinc and sulphur.According to the types of foundation of electroplating can change color | ·tableware ·jewelry accessories |
 | Sn | High corrosion resistance and oxidation resistance.Used in food hygiene is not easy to lose luster and is harmless. | ·Tableware ·household utensils ·tableware ·jewelry accessories |
 | No coating | No surface treatment, Neodymium magnets are easy to rust. | |
 | Epoxy H500-A | Impact resistant. Resistance to bending.High temperature can be used. | ·Electronic components |
| - | Epoxy H500-B | High hardness resin.Standard UL94 V - 0 flame retardant certified products. | ·Electronic components |
| - | Epoxy H500-C | Resin high hardness,luster. | ·tableware |
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