Effect of Aluminum Addition on Thermal Properties of Mg/SiCP Composites


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In this studies, Mg(Al)-50 vol.% SiC particle composites were fabricated by pressure infiltration with the two different matrix base materials of Mg and Mg-6Al alloy. Thermal conductivities of the two composites were compared and the effect of addition was studied using X-ray diffraction and scanning electron microscopy (SEM). The analysis of the X-ray diffraction shows that the Al-addition to the Mg causes a contraction of the Mg lattice parameters, which brings a better matching between the matrix and SiC particle. The microstructure and the fracture surface of the composite were characterized by using SEM. The alloying element Al exists mainly in the form of α solid solution, which has a uniform distribution in matrix. From calculation, the interfacial thermal barrier resistance of the Mg-6Al/SiCp composite is about one order of magnitude lower than that of the Mg/SiCp composite.



Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




Y. Zhang et al., "Effect of Aluminum Addition on Thermal Properties of Mg/SiCP Composites", Materials Science Forum, Vols. 561-565, pp. 765-768, 2007

Online since:

October 2007




[1] M.J. Ellsworth: Proceeding of the Ninth Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems Vol. 2 (2004), pp.707-708.

[2] D.D.L. Chung, C. Zweben, in: Composites for electronic packaging and thermal management, volume 6 of Comprehensive composite materials, chapter 38, edited by A. Kelly, C. Zweben, Elsevier, Amsterdam (2000).

DOI: https://doi.org/10.1016/b0-08-042993-9/00132-7

[3] D.J. Floyd: Int. Mater. Rev. Vol. 39 (1994), pp.1-23.

[4] J.E. Allison, L.C. Davis and J.W. Jones: Composites Engineering Handbook, edited by P.K. Mallick, Marcel Dekker, New York (1997).

[5] O. Beffort, S.Y. Long, C. Cayron, J. Kuebler, P.A. Buffat: Compos. Sci. Technol. Vol. 67 (2007), pp.737-745.

[6] W.B. Pearson: Handbook of Lattice Spacings and Structure of Metals, Pergamon, Oxford (1994).

[7] T.W. Clyne, P.J. Withers: An introduction to Metal Matrix Composites, Cambridge University Press, London (1993).

[8] D.P.H. Hasselman, L.F. Johnson: J. Compos. Mater. Vol. 21 (1987), pp.508-515.