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First published on July 26, 2007
Journal of Composite Materials 2007, doi:10.1177/0021998306074122

Article

Microstructure, Hardness, and Bending Strength of Carbon Nanotube–Iron Aluminide Composites

L X Pang*, K N Sun, S Ren, C Sun, and J Q Bi

Key Laboratory for Liquid Structure and Heredity of Materials of State Education Ministry, and Key Laboratory for Engineering Ceramics of Shandong Province Shandong University, Jinan 250061, PR China

* To whom correspondence should be addressed.


  Abstract

Iron aluminide (Fe3Al) composites reinforced with ~3 wt% of carbon nanotube (CNT) were fabricated by hot press consolidation. Ambient-temperature mechanical properties of the iron aluminide–CNT composites were determined. The hardness, compressive yield strength, and bending strength hardness of composites were higher by 63%, 1%, and 5%, respectively. Microscopic examination of the composite showed the added CNTs still keep their tubular structure. The preliminary results on the processing and improvement in mechanical properties of CNT-reinforced iron aluminide matrix composites are being reported here for the first time.

Key Words: intermetallic matrix compounds, carbon nanotube, mechanical properties.


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