A projection on the permanent magnet sales for the four major magnet types: Alnico
, SmCo, ferrite, and NdFeB shows a quasiexponential growth from 1985 to 2020 with NdFeB magnet sales projected to be over $17bn by 2020 (Figure 2) [19, 20].
In case of using the lower energy density magnets, like ferrite or AlNiCo
, there are still various possibilities to improve the magnetic flux density in the air-gap.
The quasicrystals have two structural namely; icosahedral (AlCuFe) and decagonal (AlNiCo
, AlCuCo) in this training phase related particulate grain and the preparation process.
Among them, the ferrite, AlNiCo
, samarium-cobalt (SmCo) and neodymium-iron-boron (NdFeB) are four main types of PM materials.
(BH) max/ Material B/mT (kJ/[m.sup.3]) Hc Ceramics 100 26 High Alnico
130 42 Low SmCo (2:17) 350 208 High NdFeB (N38H) 450 306 High Max.
magnets were the first type of permanent magnets to be used for biomedical purposes.
The Ames team is also dusting off "alnico
" magnets, commercialized in the 1940s.
in Chicago in 1959.The company started as a stocking distributor for cast Alnico
magnets and small ceramic magnet assemblies designed for industrial use.
Bill Dudenhoefer, Eriez's separation products manager, explained: "Erium 3000 develops a magnetic field that has up to five times the magnetic pull of conventional ceramic (barium ferrite) or Alnico
(aluminum-nickel-cobalt) magnet materials.
The Gamma 1 is a five-way horn design that comes with eight back-loaded bass horns that have 16 inch Alnico
bass drivers; a low mid-range spherical wave horn; a mid-high spherical wave horn with one of the best two inch compression drivers and Alnico
magnets and a 0.5 super-in horn tweeter with magnetic cobalt and beryllium diaphragm.
Within the assemblies, the magnets themselves come in four materials: hard ferrite SrFe (HF type), samarium and cobalt combination AlNiCo
(SC type), neodymium, iron and boron version NdFeB (ND type), and aluminum, nickel and cobalt combination AlNiCo