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Alnico magnets are made up of Aluminium, Nickel and Cobalt.
Although this type of magnets have a very high remanence induction, the coercivity is very low. It shows great stability in temperatures, maintaining its magnetic features between -250ºC and 425ºC.
This type of magnets are used mainly in measuring equipments and detection systems by magnetic fields (analytical weighing, brakes,...).
This is the magnet quality which offers best behaviour regarding temperature increase.
=>Magnetised cilindricbars
=>Bridge
=>Horseshoe Magnets
=>Low Magnetic Bases
=>Hight Magnetic Bases
=>Demagnetisation Curves
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AlNiCo materials, composed primarily of alloys of Aluminum, Nickel, Cobalt, Ferrum and other metal elements. They are characterized by excellent temperature stabilities (Its working temperature can be as high as 550 degrees Centigrade), high residual inductions, and relatively high energies. They are manufactured through either casting or sintering process. Cast magnets may be manufactured in complex shapes, such as horseshoes, not possible with other magnet materials. Sintered AlNiCos offer slightly lower magnetic properties but better mechanical characteristics than cast AlNiCos. AlNico is hard and brittle. Machining or drilling cannot therefore be accomplished by ordinary methods. AlNiCo has a low coercive force, and is easily demagnetized if not handled with care.
Cast AlNiCo5 is the most commonly used of all the cast Alnicos. This material is used extensively in rotating machinery , meters, instruments, sensing devices, and holding applications, to name a few.
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Alnico permanent magnets
AlNiCo materials, composed primarily of alloys of Aluminum, Nickel, and Cobalt are characterized by excellent temperature stabilities, high residual inductions, and relatively high energies.
AlNiCo alloys have some of the highest Curie points of any magnetic material, around 800 °C. This material is used extensively in application required high temperature up to 450°C.
AlNiCo magnets are manufactured through either a casting or sintering process. Cast magnets may be manufactured in complex shapes. AlNiCo magnets are cast close to final size and then finish machined to closer tolerances. Sintered AlNiCo offer slightly lower magnetic properties but better mechanical characteristics. AlNiCo has a low coercive force, and is easily demagnetized if not handled with care.
Some types of AlNiCo are isotropic and can be efficiently magnetized in any direction. Other types, such as AlNiCo 5, 8 and AlNiCo 12, are anisotropic, with each having a preferred direction of magnetization, or orientation. |
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Alnico magnets, composed of primarily aluminum, nickel, and cobalt, were developed in the 1940's. This class of magnet remains a preferred material because of it's excellent temperature stability, high magnetic flux density, and resistance to corrosion. Alnico magnets are manufactured through a casting or sinter process. The casting process allows for the magnet to be manufactured into intricate and complex shapes, which are not possible with other magnetic materials.
Ningbo Tongchuang Strong Magnet Material Co.,Ltd is an original factory specializing in Neodymium magnets, and also manufacturing and marketing
other permanent magnets, such as Sm-Co, Al-Ni-Co, hard ferrite and rubber magnets. |
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Alnico materials, composed primarily of alloys of Alumium, Nickel, and Cobalt are characterized by excellent temperature stabilitiies, high residual inductions and realively high energies. They are manufactured through either a casting or sintering process. Cast magnets may be manufactured in comples shape, such as houseshoes, not possible with other properies but better mechanical characteristics than cast Alnicos.
This material is used extensively in rotating machinery, meters, instruments, sensing devices, and holding applications, to name a few.
Alnico is hard and brittle. Machining and drilling can not therefore be accomplished by ordinary methods. |
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| Dexter Magnetic Technologies designs, manufacturers and distributes magnetic assemblies using alnico magnets. |
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Material Information
* Produce by casting or powder metallurgical techniques
* An alloy composed of matrix of Al-Ni-Fe-Co
* Very hard & brittle
* Poor resistance to demagnetization
* Produce good flux density at an reasonable cost
* Excellent stability over a wide temperature range |
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Magnets
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