A hybrid magnetron sputtering/pulsed laser deposition process was used to grow nanocrystalline yttria stabilized zirconia (YSZ) embedded in an amorphous YSZ/metal matrix. This nanocomposite design reduced friction and improved the toughness of YSZ. Films containing both silver and molybdenum exhibited friction coefficients between 0.2 and 0.4 in air (40% relative humidity) against silicon nitride balls at temperatures between 25° C and 700 °C. Additional solid lubricants reduced the friction coefficient to <0.2 for over 10000 cycles at all temperatures. A multilayer film architecture was developed to further enhance the lifetime of the adaptive coatings. Electron microscopy, x-ray diffraction and x-ray photoelectron spectroscopy were used to correlate adaptive behavior at different temperatures to the composition and structure of the films.
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World Tribology Congress III
September 12–16, 2005
Washington, D.C., USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4202-9
PROCEEDINGS PAPER
Adaptive Nanocomposite Films Exhibiting Low Friction in a Broad Temperature Range
C. Muratore,
C. Muratore
Air Force Research Laboratory, Wright-Patterson AFB, OH
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A. A. Voevodin,
A. A. Voevodin
Air Force Research Laboratory, Wright-Patterson AFB, OH
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J. J. Hu,
J. J. Hu
Air Force Research Laboratory, Wright-Patterson AFB, OH
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J. S. Zabinski
J. S. Zabinski
Air Force Research Laboratory, Wright-Patterson AFB, OH
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C. Muratore
Air Force Research Laboratory, Wright-Patterson AFB, OH
A. A. Voevodin
Air Force Research Laboratory, Wright-Patterson AFB, OH
J. J. Hu
Air Force Research Laboratory, Wright-Patterson AFB, OH
J. S. Zabinski
Air Force Research Laboratory, Wright-Patterson AFB, OH
Paper No:
WTC2005-63568, pp. 377-378; 2 pages
Published Online:
November 17, 2008
Citation
Muratore, C, Voevodin, AA, Hu, JJ, & Zabinski, JS. "Adaptive Nanocomposite Films Exhibiting Low Friction in a Broad Temperature Range." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 2. Washington, D.C., USA. September 12–16, 2005. pp. 377-378. ASME. https://doi.org/10.1115/WTC2005-63568
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