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Microstructure and properties of oxide ceramic-based nanocomposites with transition metal nanoparticles

Published online by Cambridge University Press:  10 February 2011

T. Sekino ,
S. Etoh ,
Y.-H. Choa  and
K. Niihara
T. Sekino
Affiliation:
Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567, Osaka, Japan.
S. Etoh
Affiliation:
Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567, Osaka, Japan.
Y.-H. Choa
Affiliation:
Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567, Osaka, Japan.
K. Niihara
Affiliation:
Institute of Scientific and Industrial Research, Osaka University, Ibaraki 567, Osaka, Japan.
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Abstract

Transition metal particles dispersed oxide ceramic nanocomposites A12O3/Co and ZrO2/Ni, in which metal content is less than 20 vol%, have been fabricated by the reduction and sintering of composite powders. These powder mixtures were prepared by solution chemical processes to obtain suitable structure for ceramic/metal nanocomposites. Nickel or cobalt nitrate, as a source of metal dispersion, was dissolved into alcohol and mixed with alumina or zirconia powder. These powders were reduced by hydrogen and successively hot press sintered. Nanometer-sized Co or Ni particles were mainly dispersed at the matrix grainboundaries. Fracture strength was improved by dispersing metal particles due to microstructural refinement, whereas toughness was increased by incorporating large metals. Ferromagnetic responses with enhanced coercive force were also observed for these composites.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 501: Symposium FF – Surface Controlled Nanoscale Materials for High-Added… , 1997 , 289
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

Sekino, I. T., Nakahira, A., Nawa, M. and Niihara, K., J. Jpn. Powd. and Powd. Metal., 38, 326 (1991).Google Scholar
2. Sekino, T., Nakahira, A., Nawa, M. and Niihara, K., in Proc. Intl. Ceram. Conf. Australia 1992, (CSIRO Pub., Melbourne, Australia, 1992), p. 745.Google Scholar
3. Sekino, T. and Niihara, K., Nanostruct. Mater., 6, 663 (1995).Google Scholar
4. Sekino, T. and Niihara, K., J. Mater. Sci., 32, 3943 (1997).Google Scholar
5. Sekino, T., Nakahira, A., and Niihara, K., in Proc. 3rd IUMRS Intl. Conf. on Adv. Mater., (Elsevier Science B.V, Tokyo, Japan, 1993), p. 1513.Google Scholar
6. Niihara, K., Sekino, T. and Nakahira, A., in New Functionality Materials Vol.C, (Elsevier Science. B.V., Tokyo, Japan, 1993), p.751.Google Scholar
7. Sekino, T., Nakajima, T. and Niihara, K., Mater. Lett., 29, 165 (1996).Google Scholar
8. Sekino, T., Nakajima, T., Ueda, S. and Niihara, K., J. Am. Ceram. Soc., 80, 1139 (1997).Google Scholar
9. Nawa, M., Sekino, T. and Niihara, K., J. Mater. Sci., 29, 3185(1994).Google Scholar
10. Nawa, M., Yamazaki, K., Sekino, T., Niihara, K., J. Mat. Sci, 31, 2849 (1996).Google Scholar
11. Nawa, M., Nakamoto, S., Yamazaki, K., Sekino, T., Niihara, K., J. of Japan Soc. of Powd. and Powder Metall., 43, 415 (1996).Google Scholar
12. Grossmann, J., Rose, K., Sporn, D., in Electroceramics IV, vol.2, (Verlag der Augustinus Buchhandlung, Aachen, Germany, 1994), p. 1319.Google Scholar
13. Niihara, K., J. Ceram. Soc. of Jpn., 99, 974 (1991).Google Scholar
14. Garvie, R. C. and Swain, M. V., J. Mater. Sci., 20, 1193 (1985).Google Scholar
15. Daroczi, L., Beke, D.L., Posgay, G., Zhou, G.F. and Bakker, H., Nanostruct. Mater., 2, 515 (1993).Google Scholar
16. Ermakov, A.E., Ivanov, O.A., Shur, Ya. S., Grechishkin, R.M. and Ivanova, G.V., Fiz. Met. & Metalloved., 33, 558 (1972).Google Scholar
17. Chikazumi, S., Physics of Ferromagnetism -Magnetic Characteristics and Engineering Applications-, 1 st ed. (Syokabo, Tokyo, Japan, 1984), p. 213.Google Scholar
18. Kamel, R. and Reffat, A., Solid State Commun., 8, 821 (1970).Google Scholar