Abnormal Tribological Behavior of Multiwalled Nanotube Rafts Part I: Aligned Rafts

Author:

Yang Wei1,Wang Hongtao1,Huang Y.2

Affiliation:

1. Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China

2. Department of Mechanical and Industrial Engineering, University of Illinois, Urbana, IL 61801

Abstract

Abstract When two material surfaces are brought into contact, the classical Amonton’s law predicts a monotonically increasing relation between the frictional force and the normal pressure. An abnormal friction law refers to the case where the friction force declines as the normal pressure increases. We investigate the possibility of abnormal tribological behavior for two surfaces coated with aligned multiwalled nanotube rafts. Part I of the investigation is devoted to the case when two contacting nanotube rafts are aligned to each other, while part II is aimed at more general case of arbitrarily oriented nanotube rafts. The analysis in part I is based on the JKR theory of adhesion and linear elasticity for aligned multiwalled carbon nanotube raft configuration. It gives rise of several interesting predictions. First, two surfaces covered by aligned nanotubes can adhere when bringing into a pressureless contact. Second, the aligned multiwalled nanotube rafts exhibit a detachment work that declines with the contacting pressure. Third, in contrast to the Amonton’s law, the frictional force would decline as the normal pressure increases.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Contact and Friction of One- and Two-Dimensional Nanostructures;Scanning Probe Microscopy in Nanoscience and Nanotechnology 3;2012

2. Modeling Nanowire Indentation Test With Adhesion Effect;Journal of Applied Mechanics;2010-10-12

3. Abnormal Tribological Behavior of Multiwalled Nanotube Rafts Part II: Inclined Rafts;Journal of Engineering Materials and Technology;2004-11-15

4. Tribological Behavior of Aligned Single-Walled Carbon Nanotubes;Journal of Engineering Materials and Technology;2004-06-29

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