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Analytical and Bioanalytical Chemistry

, Volume 390, Issue 6, pp 1537–1541 | Cite as

TOF-SIMS investigations on thermally treated copper–molybdenum films on a carbon substrate

  • Stefan Puchner
  • Herbert Hutter
  • Christoph Eisenmenger-Sittner
  • M. Kiniger
Original Paper

Abstract

Metal-matrix composites are made of materials with different physical and chemical properties. It is possible to change the mechanical, thermal and electrical properties by variation of the mass ratio of the components; therefore, metal-matrix composites have great value for industrial and technological applications. Copper–carbon composites have a good chance to be used as heat sinks for electronic components, which can be explained by their high thermal conductivity, low density and an adjustable coefficient of thermal expansion. On the other hand, the mechanical adhesion of copper and carbon is extremely weak because of their immiscibility and weak chemical interactions. In order to compensate for the low wettability of carbon by copper, a thin molybdenum intermediate layer is used as an adhesion promoter. In this work a time of flight secondary ion mass spectrometry technique was primarily used to detect the carbide formation in the molybdenum and copper layers, depending on different temperature conditions during sputter deposition and annealing afterwards. The CuMo layers were deposited by magnetron sputtering. The adhesion of the samples was determined by a destructive pull-off test. We found that heat treatment mainly modifies the carbide formation in the molybdenum and copper layers.

Keywords

Time of flight secondary ion mass spectrometry CuMo films Adhesion Metal-matrix composites (MMC) Carbide formation 

Notes

Acknowledgements

For the performance of adhesion measurements the help of D. Schäfer is gratefully acknowledged. The support of the Austrian Science Foundation FWF (Fonds zur Förderung der wissenschaftlichen Forschung) within project P17430-N11 and project P-19379 is gratefully acknowledged.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Stefan Puchner
    • 1
  • Herbert Hutter
    • 1
  • Christoph Eisenmenger-Sittner
    • 2
  • M. Kiniger
    • 2
  1. 1.Institute of Chemical Technologies and AnalyticsVienna University of TechnologyViennaAustria
  2. 2.Institute of Solid State PhysicsVienna University of TechnologyViennaAustria

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