Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1625020 | Journal of Alloys and Compounds | 2008 | 5 Pages |
Abstract
Different approaches have been investigated to synthesize Al(Zn)-4Cu/Al2O3 composites by displacement reactions involving Al, ZnO and CuO. The reactions have been performed either by mechanosynthesis, exothermic dispersion or a combined mechanical and thermal activation process. Differential thermal analysis, X-ray diffraction and scanning electron microscopy have been used to study the various reaction mechanisms and transformations. High-energy ball milling of the powder modifies the reactivity of the system. A milling treatment not only reduces the reaction temperature, but can also induces a different reaction path. It is reported here that an appropriate mechanical-thermal treatment leads to the synthesis of an Al(Zn)-4Cu/Al2O3 composite. The hardness and wear resistance of the in situ composites increase with the milling time.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
T.G. Durai, Karabi Das, Siddhartha Das,