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Fabrication and mechanical properties of Al/Al2O3 composite bodies by reactive infiltration of molten Al into SiO2 preform

  • Noboru Yoshikawa (a1), Singo Funahashi (a1), Shoji Taniguchi (a1) and Atsushi Kikuchi (a1)


Al/Al2O3 composites were fabricated by a displacement reaction between SiO2 and molten Al. In this study, fabrication of Al/Al2O3 composites was attempted by means of reactive infiltration to provide variation of their mechanical properties. SiO2 preforms having various porosities and pore size distributions were prepared by sintering the powder at different temperatures between 1273 and 1723 K. Molten Al was infiltrated at 1373 K without application of pressure. Infiltration kinetics were studied and the microstructures of the composite bodies were observed by means of scanning electron microscopy (with energy dispersive x-ray microanalysis), wave dispersive x-ray microanalysis, and x-ray diffractions. The infiltrated specimens were mainly composed of Al and α–Al2O3 phases, and the Si content was less than 5 at.%. Volume fraction of Al phase in the composite bodies was not altered very much with the porosities of the SiO2 preforms because of the difficulty in filling out the entire pore space. Properties and microstructures of Al/Al2O3 composites, however, were dependent on the sintering temperature of the SiO2 preforms. In the case of low sintering temperature, a thick Al channel existed, which deformed upon compression. In the case of high sintering temperature, the microstructure became homogeneous and had thinner Al channels. The composite bodies became brittle. The deformation behavior was shown to be changed from ductile to brittle as an increase of the sintering temperature of the preforms.


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1.Matsuo, S. and Inaba, T., Ceramics, 26, 222 (1991).
2.Breslin, M.C., Ringnalda, J., Xu, L., Fuller, M., Seeger, J., Daehn, G.S., Otani, T., and Fraser, H.L., Mater. Sci. Eng. A 195, 113 (1995).
3.Fishman, S.G., In-Situ Composite Science and Technology, edited by Singh, M. and Lewis, D. (TMS, Pittsburgh, PA, 1994), pp. 119.
4.Newkirk, M.S., Urquhart, A.W., Zwicker, H.R., and Breval, E., J. Mater. Res. 1, 81 (1986).
5.Antolin, S., Nagelberg, A.S., and Creber, D.K., J. Am. Ceram. Soc. 75, 447 (1992).
6.Xiao, P. and Derby, B., J. Am. Ceram. Soc. 77, 1771 (1994).
7.Gao, Y., Jia, J., Loehman, R.E., and Ewsuk, K.G., J. Mater. Res. 10, 1216 (1995).
8.Ewsuk, K.G., Glass, S.J., Loehman, R.E., Tomsia, A.P., and Fahrenhortz, W.G., Met. Trans. 27A, 2122 (1996).
9.Saiz, E. and Tomsia, A.P., J. Am. Ceram. Soc. 81, 2381 (1998).
10.Loehman, R.E., Ewsuk, K., and Tomsia, A.P.J. Am. Ceram. Soc. 79, 27 (1996).
11.Daehn, G.S., Starck, B., Xu, L., Elfishawy, K.F., Ringnalda, J., and Fraser, H.L., Acta Mater. 44, 249 (1996).
12.Yoshikawa, N., Watanabe, Y., Veloza, Z.M., Kikuchi, A., and Taniguchi, S., J. Jpn. Inst. Metals 63, 312 (1999).
13.Fahrenholtz, W.G., Ewsuk, K.G., Loehman, R.E., and Lu, P., J. Am. Ceram. Soc. 81, 2533 (1998).
14.Saiz, E., Foppiano, S., MoberlyChan, W. and Tomsia, A.P., Composites, Part A 30, 399 (1999).
15.Matsuo, S., Ito, K., Inaba, T., and Sakai, Y., Kinzoku 61 (1989).
16.Standage, A.E. and Gani, M.S., J. Am. Ceram. Soc. 50, 101 (1967).
17.Hanabe, M. and Aswath, P.B., J. Mater. Res. 11, 1562 (1996).
18.Hanabe, M. and Aswath, P.B., Acta Mater. 45, 4067 (1997).
19.Zhou, X.Y., Deng, Z.D., Ying, T.Z., and Shen, H., Key Engineering Mateirals, (Trans. Tech. Publication, Switzerland, 1999), Vol. 161–163, pp. 99106.
20.Tomsia, A.P., Saiz, E., and Loehman, E., Proc. of 6th Inter. Conf. on Ceramic Materials and Components for Engines (1997), pp. 6266.
21.Kingery, W.D., Bowen, H.K., and Uhlmann, D.R., Introduction to Ceramics, 2nd ed. (John Wiley and Sons, New York, 1975), pp. 728755.
22.Davidge, R.W., Mechanical Behavior of Ceramics (Cambridge University Press, Cambridge, United Kingdom, 1977), p. 82.

Fabrication and mechanical properties of Al/Al2O3 composite bodies by reactive infiltration of molten Al into SiO2 preform

  • Noboru Yoshikawa (a1), Singo Funahashi (a1), Shoji Taniguchi (a1) and Atsushi Kikuchi (a1)


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