The effects of vibration on friction reduction of silicon, aluminum-coated silicon, and aluminum plate sliding against a silicon nitride ball were assessed under various conditions. It was found that friction coefficient could be decreased significantly to 0.1 for all specimens at specific vibration frequency ranges. Also, vibration in the vertical direction resulted in the highest friction reduction of silicon compared to the longitudinal and tangential directions. As for the wear characteristics, it was found that the least amount of wear occurred on silicon followed by aluminum coating and aluminum plate specimens. Though the amount of wear depended on the vibration frequency, the frequency that led to low friction did not necessarily correspond to low wear.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea Government ( MSIP ) (No. 2010-0018289 ).
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films