2009 Fiscal Year Final Research Report
Study on structural changes of solid surfaces due to tribological interaction in sliding interfaces
| Project/Area Number |
19560154
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Ube National College of Technology |
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Principal Investigator |
GOTO Minoru Ube National College of Technology, 機械工学科, 准教授 (00435455)
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| Co-Investigator(Kenkyū-buntansha) |
AKIMOTO Koichi 名古屋大学, 工学研究科, 准教授 (40262852)
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| Project Period (FY) |
2007 – 2009
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| Keywords | ナノ材料 / トライボロジー / 超薄膜 / 表面・界面物性 / 放射線X線粒子線 |
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| Research Abstract |
We have studied the correlation between the tribological properties and the structural changes of polycrystalline Ag films deposited on the Si(111)√<3>×√<3>-Ag reconstructed surface that was formed by one atomic layer of Ag atoms chemically bonded to each of the topmost Si atoms of the substrate. As a result, the Ag crystallites in the film are oriented to <111> direction of the substrate due to frictional effect (tribo-assisted reorientation) under the elastic-contact condition, when the film thickness was less than 10 nm in average. In addition, we have demonstrated that the re-deposited Ag film grows epitaxially on the reoriented surface, and that the difference in the degree of orientation can be controlled between the reoriented area and the non-reoriented area by controlling the surface composition of the substrate. These findings show the feasibility of novel film processing technology due to tribo-assisted reorientation.
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