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In situ Raman spectroscopy of annealed diamondlike carbon-metal composite films |
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| Authors: | C Jin S Graham |
| Institution: | a Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, 152 MacNider Hall, Campus Box 7575, Chapel Hill, NC 27599-7575, United States b Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695-7907, United States c George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405, United States |
| Abstract: | Diamondlike carbon films and diamondlike carbon-metal composite films may provide increased component reliability, decreased fuel consumption, decreased noise/vibration/harshness (NVH), and decreased lubricant use in next generation automotive components. Raman spectra were obtained for diamondlike carbon, diamondlike carbon-platinum composite films, and diamondlike carbon-gold composite films, which were annealed to a temperature of 523 °C. The Raman spectra for these films were fitted using a two-Gaussian function. The variation of the G-peak position, the D-peak position, and the ID/IG ratio was examined as a function of temperature. The unalloyed diamondlike carbon film demonstrated greater thermal stability than the diamondlike carbon-noble metal composite films. These results suggest that the operating temperatures of the diamondlike carbon-coated automotive components must be kept under careful consideration. |
| Keywords: | Raman spectroscopy Diamondlike carbon Composite materials Annealing Nanostructured materials |
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