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Development of fullerene-reinforced aluminum

Published online by Cambridge University Press:  03 March 2011

E.V. Barrera ,
J. Sims  and
D.L. Callahan
E.V. Barrera
Affiliation:
Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas 77251-1892
J. Sims
Affiliation:
Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas 77251-1892
D.L. Callahan
Affiliation:
Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas 77251-1892
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Abstract

Powder metallurgy and casting have been used to produce aluminum with 1.3, 4, and 8 vol. % fullerene additions. Fullerene extract was mixed with Al and heat-treated to obtain various levels of dispersion of the fullerenes. Intergranular dispersion of stable fullerenes was accomplished by both powder metallurgy and casting; however, x-ray diffraction indicated the formation of some Al4C3. Homogeneous dispersion did not occur because of limited diffusion in the solid state or limited solubility of fullerene in Al in the liquid state. Enhancements in hardness over that for Al were observed yet were not comparable to precipitation hardened Al alloys since a less homogeneous dispersion was achieved. Interest in Al having fullerene additions is for development of fullerene strengthened materials where fullerenes act as nanosize dispersoids for dispersion strengthening of metals or as a lightweight reinforcement in metal-matrix composites.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 2 , February 1995 , pp. 366 - 371
Copyright
Copyright © Materials Research Society 1995

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References

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