Additive manufacturing of permanent magnets
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Ames Lab., Ames, IA (United States)
- GE Global Research, Niskayuna, New York (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Here, permanent magnets enable energy conversion. Motors and generators are used to convert both electrical to mechanical energy and mechanical to electrical energy, respectively. They are precharged (magnetized) prior to being used in an application and must remain magnetized during operation. In addition, they should generate sufficient magnetic flux for a given application. Nevertheless permanent magnets can be demagnetized (discharged of their magnetization) by other magnetic materials in their service vicinity, temperature changes (thermal demagnetization), microstructural degradations and the magnet’s internal demagnetizing field. Therefore a permanent magnet can be qualified based on the properties that measure its ability to withstand demagnetization and to supply sufficient magnetic flux required for a given application. Some of those properties are further discussed below. Additive manufacturing followed by exchange spring magnets will be discussed afterwards.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1349005
- Report Number(s):
- LLNL-JRNL-707384
- Journal Information:
- Material Matters, Vol. 11, Issue 4; ISSN 1933-9631
- Publisher:
- Sigma-AldrichCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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