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Start Over Author "sun, Juan" Journal advanced materials research
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13. Preparation of Al2O3/Cu Composites by Internal Oxidation in Cu-Al Alloy Sheet Processing

Author

Wu, Rui, Zhang, Dan Wen, Sun, Juan, Ren, Feng Zhang, and He, Qing Chuan

Abstract

Internal oxidation Cu-Al alloy sheet processing has been used to prepare dispersion-strengthened Al2O3/Cu composites. A new technique has been developed that successfully avoids mixed Cu-Al powder preparation, H2-reduction, and sintering processes. The microstructure and phase were investigated by metallurgical microscope, SEM, and TEM. Holding-time, internal oxidation temperature and thickness of Cu-Al alloy sheet were the three key factors with regard to preparing Al2O3/Cu composites by internal oxidation in Cu-Al alloy sheet. The mechanical characteristics and electric properties of Al2O3/Cu composites sheet and hot-extruded rod were examined. The results show hot extrusion process enhances microhardness and ultimate tensile strength to a higher level with and exerts a little influence on high electrical conductivity.

Published
2012
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