Hostname: page-component-77c89778f8-fv566 Total loading time: 0 Render date: 2024-07-17T10:21:59.263Z Has data issue: false hasContentIssue false
  • English
  • Français

Diamond/Carbide Nano-Composite Gradient Films: a Route to solve the Adhesion Issues of Diamond Films

Published online by Cambridge University Press:  01 February 2011

Thorsten Staedler ,
Srikanth Vadali  and
Xin Jiang
Thorsten Staedler
Affiliation:
thorsten.staedler@uni-siegen.de, University of Siegen, Engineering, Paul-Bonatz-Str. 9-11, D-57076 Siegen, GERMANY, Siegen, N/A, 57076, Germany
Srikanth Vadali
Affiliation:
srikanth.vadali@uni-siegen.de, University of Siegen, Department of Engineering
Xin Jiang
Affiliation:
xin.jiang@uni-siegen.de, University of Siegen, Department of Engineering
Get access

Abstract

Due to their outstanding mechanical properties diamond films are ideal candidates for many cutting and machining applications. However, industrial applications of these films are limited due to poor adhesion. Two main reasons causing this poor adhesion, which are based on the extrinsic physical and chemical properties of diamond, can be identified: High mechanical stresses induced by a difference of the thermal expansion coefficient between the diamond film and the substrate as well as a catalytic effect in case of metallic substrates containing iron-, cobalt- and nickel that, in combination with a methane atmosphere during deposition, leads to soot formation. One option to overcome these difficulties is to provide an interfacial layer that acts as adhesion layer as well as barrier layer to prevent the catalytic effect of the substrate elements. Even though some successful examples exist, this approach usually requires a time consuming and expensive multi-step process.

In this paper, the synthesis of nanocrystalline diamond/carbide composite films with a compositional gradient will be reported. Focusing on the example of diamond/ß-SiC the possibility to create a gradient layer ranging from ß-SiC to diamond in a controlled manner will be shown. The films are prepared by a Microwave Assisted Plasma Chemical Vapour Deposition process (MWCVD) using H2, CH4 and Tetramethylsilane (TMS) as reactive gases. The structure, grain sizes, and volume fractions of the components of these composite films, which consist of a mixture of diamond and carbide phase, can be controlled by adjusting the concentrations of the reactive gases in the gas mixture. This strategy, which handles all depositions in one process step, should allow for an improved diamond film adhesion on tools. The preparation and characterization of the composite films with special emphasize on their mechanical and tribological properties will be discussed and a short outlook on other diamond/carbide systems will be given.

Keywords

compositediamondtribology
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 890: Symposium Y – Surface Engineering for Manufacturing Applications , 2005 , 0890-Y01-04
Copyright
Copyright © Materials Research Society 2006

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Nesladek, M., Asinari, C., and Spinnewyn, J., Diamond Relat. Mater. 2, 7 (1994).Google Scholar
2. Lorenz, H.P., Diamond Relat. Mater. 4, 1088 (1995).Google Scholar
3. Fan, Q.H., Fernandes, A., Pereira, E., and Gracio, J., Diamond Relat. Mater. 8, 1549 (1999).Google Scholar
4. Schaefer, L., Fryda, M., Stolley, T., Xiang, L., and Klages, C-P., Surf. Coat. Technol. 116, 447 (1999).Google Scholar
5. Nono, M.C.A., Corat, E.J., and Ueda, M., Surf. Coat. Technol. 112, 295 (1999).Google Scholar
6. Klages, C-P., Fryda, M., Matthee, T., Schaefer, L., and Dimigen, H., Refractory Met. Hard Mater. 16, 171 (1998).Google Scholar
7. Albright, L. F. and Tasi, T. C., in Crynes, L. F. and Corcoran, W. H. (eds.), Physics: Theory and Industrial Practice, Academic Press, NewYork, Chapter 10, pp. 233–254 (1983).Google Scholar
8. Konyashin, I.Y. and Guseva, M.B., Diamond Relat. Mater. 5, 575 (1996).Google Scholar
9. Glozman, O. and Hoffman, A., Diamond Relat. Mater. 6, 796 (1997).Google Scholar
10. Wittorf, D., Jäger, W., Urband, K., Gutheit, T., Gütler, H., Schulz, G., and Zachai, R., Diamond Relat. Mater. 6, 649 (1997).Google Scholar
11. Jones, A.H.S., Camino, D., Teer, D.G., and Jiang, J., Proceedings of the International Conference on Mechanical Engineering, Vol. 212, Pt. 1, 301–306 (1998).Google Scholar
12. Monagham, D.P., Teer, D.G., Logan, P.A., Efleoglu, I., and Arnell, R.D., Surf. Coat. Technol. 60, 525–530 (1993).Google Scholar
13. Yugo, S., Kanai, T., Kimura, T. and Muto, T., Appl. Phys. Lett., 58 1036 (1991).Google Scholar
14. Jiang, X., Schiffmann, K., and Klages, C.-P., Phys. Rev. B 50, 8402 (1994).Google Scholar
15. Oliver, W. C. and Pharr, G. M., J. Mater. Res. 7, 1564 (1992).Google Scholar
16. Bhushan, B., B., , Modern Tribology Handbook, Vol. 1 - Principles of Tribology; Vol. 2 - Materials, Coatings, and Industrial Applications, CRC Press, Boca Raton, Florida, 2001.Google Scholar