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The strong neodymium(NdFeB) magnets in arc/segment shape are mainly used in permanent magnet motor and called neodymium magnetic tile. Strong neodymium(NdFeB) magnetic tile is mainly used in permanent magnet DC motors.
Strong neodymium(NdFeB) arc/segment magnets are not rust-resistant and easy to corrode, and its surface need to be coated, generally including zinc plating, nickel, environmental protection zinc, environmental protection nickel, nickel copper nickel, environmental protection nickel copper nickel,epoxy coating etc.
Surface | Coating | Thickness (Microns) | Color | Resistance |
Passivation | 1 | Silver Grey | Temporary Protection | |
Nickel | Ni+Ni | 10-20 | Bright Silver | Excellent Against Humidity |
Ni+Cu+Ni | Good Against Salt Spray | |||
Zinc | Zn | 8-20 | Bright Blue | Excellent Against Salt Spray |
C-Zn | Shinny Color | Superior Against Humidity | ||
Tin | Ni+Cu+Sn | 15-20 | Silver | Superior Against Humidity |
Silver | Ni+Cu+Ag | 10-20 | Silver | Superior Against Humidity |
Gold | Ni+Cu+Au | 10-20 | Gold | Temporary Protection |
Copper | Ni+Cu | 10-20 | Gold | Excellent Against Humidity&Salt Spray |
Epoxy | Epoxy | 15-25 | Black,Red,Grey | Excellent Against Humidity,Salt Spray,Superior Against Solvents,Gases, Fungi and Bacteria,FDA Approved |
Ni+Cu+Epoxy | Excellent Against Humidity | |||
Zn+Epoxy | ||||
Parylene | Parylene | 5-20 | Grey | Excellent Against Humidity |
Chemical | Ni | 10-20 | Silver Grey | Excellent Against Humidity |
The magnetized direction of powerful neodymium(NdFeB) ring magnets generally divided into radially magnetized and diameterly magnetization, which is determined according to the required working face.Please let us know the magnetization direction when you send us inquiry for rare earth NdFeB magnets.
Neodymium arc magnets are custom magnetic tiles,sintered Nd-Fe-B material has good machinability and c.an be customized into different sizes of neodymium(NdFeB) arc/segment magnets,mould is not necessary for customizing strong neodymium arc magnets.We can make machine strong neodymium magnetic tile for all kinds of motors.Please provide drawings when you inquiry and order strong neodymium arc magnets for use.
Neodymium Material Grade | Maximum Working Temp. | Curie Temp. |
N（N35,N38,N40,N42,N45,N48,N50,N52） | 176°F (80°C) | 590°F (310°C) |
N-M（N35M,N38M,N40M,N42M,N45M,N48M,N50M,N52M） | 212°F (100°C) | 644°F (340°C) |
N-H（N35H,N38H,N40H,N42H,N45H,N48H,N50H） | 248°F (120°C) | 644°F (340°C) |
N-SH（N35SH,N38SH,N40H,N42SH,N45SH,N48SH） | 302°F (150°C) | 644°F (340°C) |
N-UH（N28UH,N30UH,N33UH,N35UH,N38UH,N40UH,N42UH） | 356°F (180°C) | 662°F (350°C) |
N-EH（N28EH,N30EH,N33EH,N35EH,N38EH,N40EH） | 392°F (200°C) | 662°F (350°C) |
N-AH（N28AH,N33AH,N35AH,N38AH） | 428°F (230°C) | 662°F (350°C) |
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