The magnetically biasing magnetic core according to claim 10 wherein said Febased soft magnetic powder is selected from a group consisting of carbonyl iron powder, atomizing iron powder, electrolytic iron powder, Fe—Si alloy powder, Fe—Ni alloy powder, Fe—Si—Al alloy powder, Fe—Si—Cr alloy powder, and Febased amorphous power.

the effect of magnetically aligned powder on the magnetostriction of sintered rare earthiron laves phase compounds

Shaping is done either by pressing on steel moulds at a pressure of 1 to 3 tonnes/cm 2 or by extrusion through a die of a mixture of the powdered constituents with an organic binding agent (polyvinyl alcohol, parafin wax). Ferrites are fired at a temperature selected according to their composition and the shape and size of the articles.

Iron exists in nature as a compound, and iron ore can be gradually selected after natural iron ore is crushed, milled, magnetically selected, flotation, and reselected. Therefore, iron ore is an important raw material in the field of steel production; generally iron ore grade less than 50% needs to go through the dressing before smelting and ...

the complex filler are the FeNdBalloy and carbonyl iron in powder form. Their selection is suggested by the fact that the former remains one of the strongest among magnetically hard substances, whereas the latter (carbonyl iron) exhibits high saturation magnetization and its commercially available forms are produced with appropriate particles ...

The powders selected for testing included cobalt, nickel, austenitic stainless steel, ferritic stainless steel, carbonyl iron, and pure iron. In this study, the milling conditions were selected to ensure that all the flake powders had comparable dimensions.

Powdered cores made of carbonyl iron, a highly pure iron, have high stability of parameters across a wide range of temperatures and magnetic flux levels, with excellent Q factors between 50 kHz and 200 MHz. Carbonyl iron powders are basically constituted of micrometersize spheres of iron coated in a thin layer of electrical is equivalent to a microscopic laminated magnetic ...

Iron powder has been used in the communiion industry at frequency up to 1 MHz. For this purpose, carbonyl iron powder is often selected to take advantage of the spherical shape, the small size (≈ 5 μm in average diameter) and very hard nature, of the particles, although other grades such as hydrogenreduced, electrolytic ...

31/01/2014 · Magnetite–hydroxyapatite nanocomposites were prepared by in situ precipitation of the calcium phosphate phase in an iron oxide colloidal suspension. Homogeneous magnetic powders were obtained with iron oxide content up to 50 wt%, without perturbation of the magnetite structure nor formation of additional calcium phosphates. The surface area of the composite powder was .

08/08/2008 · A powder metallurgical approach is utilized to prepare grain‐oriented Laves phase compounds of TbxDy1−xFe2. The magnetostrains observed in the oriented compounds, though containing ∼20% porosity as presently prepared, are far superior to those of arc cast and highly dense liquid‐phase sintered materials. Also, it is shown that the alignment achieved is strongly dependent on .