Zobrazeno 1 - 10
of 30
pro vyhledávání: '"K.G. Knoch"'
Publikováno v:
Journal of Alloys and Compounds. 239:50-54
Nd 16 Fe 76 B 8 sintered magnets were produced in aligned and unaligned forms. The magnets were prepared by isostatic pressing and finished with a centreless grinder; no coatings were applied and the samples were left unmagnetised. These magnets diff
Publikováno v:
International Journal of Materials Research. 85:350-354
The lines of double saturation separating the areas of primary crystallisation of Nd 2 Fe 17 , Nd 2 Fe 14 B, and Nd 1.1 -Fe 4 B 4 have been rerouted as a result of DTA measurements and microstructural observations. The data are incorporated in an upd
Publikováno v:
ChemInform. 23
Publikováno v:
Journal of Alloys and Compounds. 183:54-58
The microstructure of sintered permanent magnets with a composition 17Nd-76.5Fe-5B-1.5Cu was investigated by optical microscopy, electron probe microanalysis and transmission electron microscopy. Using the hydrogen decrepitation processing route, max
Publikováno v:
Journal of Alloys and Compounds. 182:223-231
The effects of furnace cooling, air cooling and quenching in liquid argon from 1100°C on the coercivity of Nd 16.4 Fe 75.7 B 7.9 (A), Nd 17 Fe 78.5 B 5 Cu 1.5 (B) and Nd 17 Fe 79 B 4 (C) sintered magnets have been investigated. In magnet A, a consid
Publikováno v:
IEEE Transactions on Magnetics. 28:2142-2144
Sintered permanent magnets were produced from an Nd/sub 17/-Fe/sub 76.5/-B/sub 5/-Cu/sub 1.5/ alloy by a two-step heat treatment at 1370 K and 870 K following hydrogen decrepitation (HD)-processing. Optimized heat-treatment yielded magnetic propertie
Publikováno v:
IEEE Transactions on Magnetics. 26:1951-1953
An enhanced coercivity of sintered Nd-Fe-B permanent magnets by Al or Ga additions that is associated with a change in microstructure has been demonstrated. These microstructural modifications were detected by energy dispersive X-ray analysis (EDX)-a
Autor:
K.G. Knoch
Publikováno v:
IEE Colloquium on `The Impact of New Materials on Design'.
The author presents an historical overview of the development of rare earth permanent magnets. Such materials, their properties, possible application fields and expected future development areas are also detailed in this paper.
Publikováno v:
1992. Digests of Intermag. International Magnetics Conference.
Publikováno v:
Journal of Magnetism and Magnetic Materials. :1169-1170
The recently developed HDDR process has now been extended to production of hot-pressed magnets. The samples prepared to date exhibit intrinsic coercivities of ≈1200 kA/m, remanence of around 690 mT and BHmax values of ≈90 kJ/m3. Careful studies o