Journal of Materials Science

, Volume 49, Issue 17, pp 6039–6047 | Cite as

Wear behavior of Au–ZnO nanocomposite films for electrical contacts

  • R. L. Schoeppner
  • D. F. Bahr
  • H. Jin
  • R. S. Goeke
  • N. R. Moody
  • S. V. Prasad


Electrical contact switches require low contact resistance for efficient passage of signals, while withstanding repetitive cycling. Hard gold with alloy additions of Ni, Co, or Ag can increase the wear resistance of Au films, however, this causes a significant decrease in conductivity and alloying elements can segregate during long-term aging leading to property evolution. The current work demonstrates that Au–zinc oxide (ZnO) nanocomposites can create a hard Au coating with a uniform, stable structure under frictional loading. Addition of ZnO particles decreases the grain size and texture of the film by 35 and 40–75 %, respectively, indicating a change in growth behavior of the film. The nanoindentation hardness increased directly with increasing ZnO concentration. Atomic force microscopy examination of wear-tested films demonstrated morphological stability after frictional contact and thus showed the potential for these films to replace current hard Au used on contact terminals.


Wear Track Wear Behavior Oxide Dispersion Strengthened Plastic Zone Size Wear Condition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • R. L. Schoeppner
    • 1
    • 2
  • D. F. Bahr
    • 2
  • H. Jin
    • 3
  • R. S. Goeke
    • 4
  • N. R. Moody
    • 3
  • S. V. Prasad
    • 4
  1. 1.School of Mechanical and Materials EngineeringWashington State UniversityPullmanUSA
  2. 2.School of Materials EngineeringPurdue UniversityWest LafayetteUSA
  3. 3.Sandia National LaboratoriesLivermoreUSA
  4. 4.Sandia National LaboratoriesAlbuquerqueUSA

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