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Percolation Threshold in Superhard Nanocrystalline Transition Metal-Amorphous Silicon Nitride Composites: The Control and Understanding of the Superhardness

Published online by Cambridge University Press:  10 February 2011

Stan Vepřek ,
S. Christiansen ,
M. Albrecht  and
H. P. Strunk
Stan Vepřek
Affiliation:
Institute for Chemistry of Inorganic Materials, Technical University Munich, Lichtenbergstr. 4, D-85747 Garching/Munich, Germany, Email: veprek@inf.chemie.tu-muenchen.d400.de
S. Christiansen
Affiliation:
Institute for Materials Science, University Erlangen-Nürnberg, Cauerstraβe 6, D-91058 Erlangen, Germany
M. Albrecht
Affiliation:
Institute for Materials Science, University Erlangen-Nürnberg, Cauerstraβe 6, D-91058 Erlangen, Germany
H. P. Strunk
Affiliation:
Institute for Materials Science, University Erlangen-Nürnberg, Cauerstraβe 6, D-91058 Erlangen, Germany
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Abstract

The hardness of the recently developed novel superhard nanocrystalline composites exceeds 5000 kg/mm2 (50 GPa) and the elastic modulus 550 GPa. This is due to a special microstructure which is formed when the fraction of the amorphous component reaches the percolation threshold. Experimental data are presented and discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 457: Symposium V – Nanophase and Nanocomposite Materials II , 1996 , 407
Copyright
Copyright © Materials Research Society 1997

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References

RFERENCES

[1] Fischmeister, H. and Jehn, H., Hartstoffschichten zur Verschleissminderung. DGM-Informationsgesellschaft, Stuttgart 1987.Google Scholar
[2] Barnett, S.A., in: Physics of Thin Films. Vol. 17, Mechanics and Dielectric Properties, eds. Francombe, M.H. and Vossen, J.L., Academic Press, Boston 1993.Google Scholar
[3] Sproul, W.D., Int. Conf. on Metallurgical Coatings, San Diego, USA, April 22–26, 1996, in press.Google Scholar
[4] Veprek, S. and Jurcik-Rajman, M., Proc. 7th Int. Symp. on Plasma Chem., Eindhoven 1985, p. 90.Google Scholar
[5] Sjöström, H., Stafström, S., Boman, M. and Sundgren, J.-E., Phys. Rev. Lett. 75(1995)1336 (see also errata in 76(1996)2205).Google Scholar
[6] Sjöström, H., Hultman, L., Sundgren, J.-E., Hainsworth, S.V., Page, T.F. and Theunissen, G.S.A.M., J. Vac. Sci. Technol. A 14(1996)56.Google Scholar
[7] Veprek, S., Reiprich, S. and Shizhi, Li, Appl. Phys. Lett. 66(1995).Google Scholar
[8] Veprek, S. and Reiprich, S., Thin Solid Films 268(1996)64.Google Scholar
[9] Veprek, S., Haussmann, M. and Reiprich, S., J. Vac. Sci. Technol. A 14(1996)46.Google Scholar
[10] Veprek, S., Haussmann, M. and Shizhi, Li, Proc. 13th Int. Conf. on CVD, Los Angeles 1996, Electrochemical Soc. Proc. Vol. 96–5(1996)619.Google Scholar
[11] Veprek, S., Haussmann, M., Reiprich, S., Shizhi, Li and Dian, J., Proc. Int. Conf. on Metallurgical Coatings and Thin Films, San Diego, April 1996, in press.Google Scholar
[12] Veprek, S., Proc. of the 5th Int. Conf. on Plasma-Surface-Engineering, Garmisch-Parten-kirchen, Germany, September 9–13, 1996, in press.Google Scholar
[13] Veprek, S., Proc. of the 10th Int. Conf. on Thin Films, Salamanca, Spain, September 23–27, 1996, Thin Solid Films, in press.Google Scholar
[14] Veprek, S., Plenary talk at the European Mater. Res. Soc., Strasbourg, France, June 3–7, 1996, in press.Google Scholar
[15] Shizhi, Li, Yulong, Shi and Hongrui, Peng, Plasma Chem. Plasma Process. 12(1992)287 Google Scholar
[16] Christiansen, S., Albrecht, M., Strunk, H.P. and Veprek, S., J. Vac. Sci. Technol., submittedGoogle Scholar
[17] Hertzberg, R.W., Deformation and Fracture Mechanics of Engineering Materials, 3rd ed., Wiley, New York 1989.Google Scholar
[18] Kelly, A. and MacMillan, N.H., Strong Solids, 3rd. ed., Clarendon, Oxford 1986.Google Scholar
[19] Carsley, J.E., Ning, J., Milligan, W.W., Hackney, S.A. and Aifantis, E.C., NanoStructured Materials 5(1995)441.Google Scholar
[20] Koehler, J.S., Phys. Rev. B 2(1970)547.Google Scholar
[21] Zallen, R., The Physics of Amorphous Solids, John Willey, New York 1983.Google Scholar