Preparation of Fe3Si‐Al2O3 Nanocomposite Powders by Mechanochemical Reaction of Fe3O4‐Si‐Al Powder Mixtures. Issue 6 (22nd February 2013)

• Record Type: Journal Article
• Authors: Jia, Jiangang; Guo, Tieming; Ren, Shufang; Lu, Jinjun; Ma, Qin
• Is Part Of: International journal of applied ceramic technology. Volume 10:Issue 6(2013:Nov./Dec.)
• Page Start: 900
• Page End: 907
• Publication Date: 2013-02-22
• Subjects: Ceramics -- Periodicals; Ceramics -- Technological innovations -- Periodicals; 620.1405
• DOI: 10.1111/ijac.12008
• Languages: English
• ISSNs: 1546-542X

Abstract

<abstract abstract-type="main" id="ijac12008-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>Phase evolution and morphology of Fe₃O₄‐Si‐Al powder mixtures during ball milling from 30 min to 20 h were investigated. A 3‐h critical milling was necessary for the occurrence of mechanically activated combustion reaction. The reaction results in the formation of Fe (Si), Fe₃Si, and α‐Al₂O₃. During ball milling from 3 to 20 h, Fe (Si) and Fe₃Si were combined into disordered Fe₃Si intermetallic and Fe₃Si‐Al₂O₃ composite powder was formed. The presence of <italic>in situ</italic> formed alumina leads to a decrease in crystallite and particle sizes. The Fe₃Si‐Al₂O₃ particles after milling for 20 h had a crystalline size of 10~12 nm.</p> </abstract>