Description
The main samarium-cobalt products developed, produced by Magnet Power are shown as follows:
Magnets 1: SmCo5(1:5 18-22)
Magnets 2: Sm2Co17(H series Sm2Co17 )
Magnets 3: High temperature resistance Sm2Co17(T series Sm2Co17, T350-T550)
Magnets 4: Temperature compensated Sm2Co17(L series Sm2Co17, L16-L26)
The samarium cobalt products of Magnet Power have been widely used in:
High Speed Motors (10,000 rpm+)
Medical Devices and Equipments,
Rail Transit
Communication
Scientific research
Production process
The composition and microstructure control are the key points of samarium cobalt magnet production and determine the magnetic properties. Because of non-standard shape, tolerance and appearance of samarium cobalt magnets are also important.
| Coating | Deposition methods | Thickness(μm) | Color | Operating Temp(℃) | PCT(h) | NSS(h) | Corrosion resistance | Oxidation Resistance | Characteristics |
| Uncoated | Cleaning | / | Siliver | / | / | ≥l | / | / | / |
| Nickel(Ni) | Electroplating | 5-10 | Siliver | ≤300 | ≥96 | ≥24 | ★★ | ★★★ | High temperature resistance, improved mechanical properties |
| Ni+Cu+Ni | Electroplating | 10-30 | Siliver | ≤300 | ≥96 | ≥48 | ★★★ | ★★★ | High temperature resistance, improved mechanical properties |
| Epoxy | Electroplating | 10-30 | Black | ≤200 | ≥192 | ≥192 | ★★★★ | ★★ | Insulating; excellent corrosion resistance |
| Ni+Cu+Epoxy | Electroplating | 20-40 | Black | ≤200 | ≥480 | ≥504 | ★★★★★ | ★★ | Insulating; excellent corrosion resistance |
| OR | Physica1 Vapor Depositon (PVD) | 2-5 | Translucent | ≤800 | ≥96 | ≥48 | ★★★ | ★★★★★ | Insulating; excellent corrosion resistance |
● Ni-based coating can effectively improve the bending strength of Sm2Co17 ~50%
● Ni-based coatings can be applied up to 350℃ to improve surface appearance and long-term stability
● Epoxy-based coating can be applied up to 200 ℃ (short time) to enhance mechanical properties, corrosion resistance, and to decrease eddy-current and to suppress temperature rise.
● At ultra high temperature 500℃ in air, degradation layer will affect magnetic properties. OR coating can effectively improve the long-term stability of SmCo at 500℃
● Due to its excellent insulation properties, the OR coating can decrease eddy-current and suppress temperature rise.
● Environmentally friendly.
