Ceramic materials consisting of magnetic particles (MgFe2O4) in an insulating matrix (MgO) with a nanocrystalline structure have been produced by mechanical alloying and sintering techniques. Initial mixtures of MgO and Fe2O3 were milled in high-energy mills and characterized after different milling times. Increasing amounts of magnesiowüstite (MgxFe1-xO) form as a function of milling time. Sintering was performed from 673 to 1273 K in vacuum. Sintering at low temperatures allows retention of nanosized grains containing a fine dispersion of magnetic particles in a magnesiowüstite matrix. Measurement of magnetic properties is used to determine both the nature of the developed phases and the grain sizes.
|Original language||American English|
|Title of host publication||Production and sintering of Mgo-MgFe2O4 powder ceramics by mechanical alloying|
|Number of pages||567|
|State||Published - 29 May 2001|
|Event||Materials Science Forum - |
Duration: 1 Dec 2006 → …
|Name||Materials Science Forum|
|Conference||Materials Science Forum|
|Period||1/12/06 → …|
Huerta, A., Calderon, H. A., & Umemoto, M. (2001). Production and sintering of Mgo-MgFe<inf>2</inf>O<inf>4</inf> powder ceramics by mechanical alloying. In Production and sintering of Mgo-MgFe2O4 powder ceramics by mechanical alloying (pp. 631-636). (Materials Science Forum; Vol. 360-362).