Permanent magnet technology

Finishing of sintered anisotropic ferrites involves grinding surfaces to specified dimensions. Since sintered ferrites are hard and brittle, grinding is usually performed with diamond tools. A serious problem in sintering hexaferrites is anisotropic shrinkage. It can be as high as 25% parallel. 

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Preparation of magnetic ceramics 3.5 Permanent magnet technology... 

K. J. Stmat, ia Proceedings 4th International Workshop on Rare Earth-Cobalt Permanent Magnets, Society Non-Traditional Technology, Tokyo, 1979, p. 8. 

Not only information technology has benefited from research in technical magnetism. Both permanent magnets and electromagnets have acquired manifold... 

The intention of this work was not to consider whether the specific experimental system used here would be applicable to an actual industrial setting. Rather, the work has set the stage to move beyond the question of whether the technique can be applied, but when. The barriers to its implementation are two-fold. Firstly, the specific technology must be developed for a particular process line. Secondly, the cost of the MRI is prohibitive, although with the use of electromagnets and permanent magnets for MRI, this is becoming less of a factor. Furthermore, when compared with other on-line instruments that promise far less in terms of... 

Consequently, we have experimentally established this totally new process and field of technology, and also have experimentally established that it is not necessary to deplete the permanent-magnet dipole after all. With the new techniques, direct replenishment energy from the active vacuum is readily furnished to the permanent magnet and utilized by the system. 

Permanent-magnet drives for pumps and stirrers are increasingly being used in high-pressure technology [22,23]. The containment shell of the magnet drive, in contrast to canned motors, must take up the full pressure-difference and must have appropriately thick walls. 

From the point of view of physics, nickel is not nearly as good a conductor as copper, but it is important for its magnetic properties. Iron can be magnetically hardened by alloying it with nickel and cobalt. In this form it finds many uses in permanent magnets. Nickel has many other interesting properties when alloyed with iron or copper, and these contribute to a wide number of technological uses. 

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