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Copper-boron nitride interaction in hot-pressed ceramics

Published online by Cambridge University Press:  31 January 2011

Milan Hubáček*
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1–1, Tsukuba, 305 Japan
Tadao Sato
Affiliation:
National Institute for Research in Inorganic Materials, Namiki 1–1, Tsukuba, 305 Japan
Masanori Ueki
Affiliation:
Advanced Technology Research Labs, Nippon Steel Corporation, 1618 Ida, Nakahara-ku, Kawasaki, 211 Japan
*
a)Author to whom correspondence should be addressed, presently with Advanced Technology Research Labs, Nippon Steel Corporation, 1618 Ida, Nakahara-ku, Kawasaki, 211 Japan.
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Abstract

Ceramics were prepared by hot pressing of chemical mixtures of turbostratic boron nitride with copper. A positive effect of copper on boron nitride crystallization and densification has been found. Preferred orientation of boron nitride grains has been revealed in such ceramics, being opposite to general experience: the c-axis of boron nitride crystallites was arranged preferably within a plane perpendicular to the direction of uniaxial pressure. Such an arrangement is interpreted as a result of the uniaxial compression of the boron nitride grains extensively growing within the c crystallographic axis.

Type
Articles
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

1.Ingles, T. A. and Popper, P., in Special Ceramics, edited by Popper, P. (Heywood and Comp., Ltd., London, 1960), pp. 144176.Google Scholar
2.Vikulin, V. V., Poroshk. Metal. 9, 64 (1978).Google Scholar
3.Hubáček, M. and Sato, T., J. Solid State Chem. 109, 384 (1994).Google Scholar
4.Hubáček, M., “Contribution to Crystallochemistry of Hexagonal Boron Nitride,” Ph.D. Thesis, Prague Institute of Chemical Technology, 1989.Google Scholar
5.Taylor, K. M., Ind. Eng. Chem. 47, 2506 (1955).Google Scholar
6.Hubáček, M. and Sato, T., J. Mater. Sci. (unpublished research).Google Scholar
7.O'Connor, T. E., U.S. Patent No. 3 241 919 (1966).Google Scholar
8.Hubáček, M., Tadao Sato, and Ishii, T., in Proc. Int. Symposium on Material Chemistry in Nuclear Environment, Tsukuba, Japan, 1992, pp. 81–91.Google Scholar
9.Brožek, V. and Hubáček, M., J. Solid State Chem. 100, 120 (1992).Google Scholar