Preparation of Fe3Si-Al2O3 Nanocomposite Powders by Mechanochemical Reaction of Fe3O4-Si-Al Powder Mixtures

被引：3

作者：

Jia, Jiangang ^{[1
,2
]}

Guo, Tieming ^{[2
]}

Ma, Qin ^{[2
]}

Ren, Shufang ^{[1
]}

Lu, Jinjun ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2013年 / 10卷 / 06期

关键词：

FABRICATION;

D O I：

10.1111/ijac.12008

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Phase evolution and morphology of Fe3O4-Si-Al powder mixtures during ball milling from 30min to 20h 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 -Al2O3. During ball milling from 3 to 20h, Fe (Si) and Fe3Si were combined into disordered Fe3Si intermetallic and Fe3Si-Al2O3 composite powder was formed. The presence of in situ formed alumina leads to a decrease in crystallite and particle sizes. The Fe3Si-Al2O3 particles after milling for 20h had a crystalline size of 10 similar to 12nm.

引用

页码：900 / 907

页数：8

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