ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Iron oxide nanometer powders were prepared by using sol-gel method and the supercriticalfluid drying technology (SCFD) from inorganic salts. The characteristics of the iron oxide nanometerpowders were characterized systematically. The results showed that the drying and crystallization of theproduction could be achieved in one step by SCFD method; furthermore, a highly dispersed, sizeuniformed and with better crystallization magnetite (Fe3O4) nanoparticles can be obtained. Phasetransformation of the as-synthesized powders occurs at about 80°C, and only hematite (α-Fe2O3) can beobtained when being heated at temperatures higher than 400°C. The production synthesized by SCFDexhibits significant magnetic properties. As the heat-treated temperature increase, the magneticproperties of the sample decrease gradually
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.617.pdf