ISSN:
1662-9752
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:
Mechanochemical synthesis of zinc ferrite, ZnFe2O4, was attempted from a powdermixture of iron (III) oxide, alpha-Fe2O3 and zinc (II) oxide, ZnO. Nanocrystalline zinc ferrite,ZnFe2O4 powders were successfully synthesized only by milling for 30 hours. The X-raydiffraction spectrum of the as-milled powders (without heating) showed twelve ZnFe2O4 peaks andfour weak peaks of coexisting unreacted Fe2O3. The crystallite size of the mechanochemicallysynthesizedZnFe2O4 was 26.3 nm. Evidence of the ZnFe2O4 formation was absent for the powdersmilled for 10 and 20 hours; milling lowered the crystallinity of the starting materials. Heating aftermilling enhanced the formation of ZnFe2O4, the crystal growth of ZnFe2O4 and the unreactedstarting materials. The unreacted starting materials decreased their amounts by heating at highertemperatures
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.201.pdf
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