Evaluating energy dissipation mechanisms of friction on clean surfaces

评估清洁表面摩擦的能量耗散机制

• 批准号: 22560140
• 负责人: HIRANO Motohisa
• 金额: $ 1.5万
• 依托单位: Gifu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560140/
• 关键词: 摩擦; トライボロジー; 超潤滑; エネルギー散逸機構; ナノトライボロジー; 散逸機構; 摩擦の起源; 摩擦の原子論; 摩擦転移; 表面; 界面

The total energy of contacting surfaces is invariant for sliding distance Q, resulting in vanishing frictional force. The increase in interfacial interactions, on the other hand, leads to the discontinuous motion of constituent atoms, resulting in the appearance of friction. We, thus, see the frictional force changes from vanishing to finite due to increased interfacial interactions. This is called friction transition. It has been examined that the occurrence of the friction transition by deriving its condition in various inter-metallic systems by using pair-wise inter-atomic potentials. The related experiment has been done for the frictional system of W(011) tips and Si(001) clean surfaces, and it has been conclude that the friction transition has not occurred in the frictional system. This study theoretically has clarified whether or not the friction transition occurs in the frictional systems by taking into account of many-body inter-atomic potentials.

接触表面的总能量对于滑动距离Q是不变的，导致摩擦力消失。另一方面，界面相互作用的增加导致组成原子的不连续运动，从而导致摩擦的出现。因此，我们看到由于界面相互作用的增加，摩擦力从消失变为有限。这称为摩擦转变。已经通过使用成对的原子间势推导各种金属间系统中摩擦转变的条件来检查摩擦转变的发生。对W(011)尖端和Si(001)清洁表面的摩擦系统进行了相关实验，得出的结论是摩擦系统没有发生摩擦转变。这项研究通过考虑多体原子间势能，从理论上阐明了摩擦系统中是否发生摩擦转变。

项目成果

In situ observation of frictional interface of surface-molded elastomer during stick-slip steady sliding

表面模压弹性体粘滑稳定滑动过程中摩擦界面的原位观察

• 发表时间: 2010
• 作者: Nitta;K. Nishio;M. Hirano;and T. Katoh
• 通讯作者: and T. Katoh

温度制御下Frenkel-Kontorova原子論的摩擦モデルの摩擦相図

温度控制下Frenkel-Kontorova原子摩擦模型的摩擦相图

• 发表时间: 2013
• 作者: 伊藤 伸;平野元久;Hiroshi Okada;平野元久
• 通讯作者: 平野元久

温度制御下原子論的摩擦モデルの摩擦相図

温度控制下原子摩擦模型的摩擦相图

• 发表时间: 2013
• 作者: 伊藤 伸;平野元久
• 通讯作者: 平野元久

Friction Transition for Metal-Semiconductor Interfaces

金属-半导体界面的摩擦转变

• 发表时间: 2011
• 作者: Motohisa Hirano;他
• 通讯作者: 他

平野研究室

平野实验室