Nanoindentation Fracture Behaviors of Diamond-Like Carbon Film on Aluminum Alloy with Different Interface Toughnesses
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概要
- 論文の詳細を見る
Fracture behaviors of a diamond-like carbon (DLC) film on an aluminum alloy (AA2017) were analyzed by a nanoindentation test under conditions of deep and full penetrations of an indenter tip through the DLC film. The interface structure between the DLC and AA2017 was modified by using the substrate sputtering and redeposition (SSRD) method. The films deposited with a shorter (30 min) SSRD duration showed weak adhesion to the substrate and often resulted in wide delamination from the impressions. At the same time, films deposited with a longer (120 min) SSRD duration showed no such delamination. Obvious brittle fractures were detected in the load-displacement curves mainly in the film with the short SSRD duration. These results suggest that a long SSRD inhibited the delamination of the DLC film from AA2017 under local and strong stress conditions because of the improved interface toughness.
- 2012-09-25
著者
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Mitsuda Yoshitaka
Institute Of Industrial Science The University Of Tokyo
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Kamiko Masao
Institute For Materials Research Tohoku University
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Nose Kenji
Institute Of Industrial Science The University Of Tokyo
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Kamiko Masao
Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo 153-8505, Japan
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Sasaki Yuto
Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo 153-8505, Japan
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