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탄소나노튜브 코팅의 마찰/마모 특성에 대한 나노메쉬 구조의 영향Effect of Nanomesh Structure Variation on the Friction andWear Characteristics of Carbon Nanotube Coatings

Other Titles
Effect of Nanomesh Structure Variation on the Friction andWear Characteristics of Carbon Nanotube Coatings
Authors
김해진김창래
Issue Date
2020
Publisher
한국트라이볼로지학회
Keywords
carbon nanotube coating; friction; nanomesh structure; stiffness control; wear; 탄소나노튜브 코팅; 마찰; 나노메쉬 구조; 강성 조절; 마모
Citation
한국트라이볼로지학회지, v.36, no.6, pp.315 - 319
Indexed
KCI
Journal Title
한국트라이볼로지학회지
Volume
36
Number
6
Start Page
315
End Page
319
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/7309
DOI
10.9725/kts.2020.36.6.315
ISSN
2713-8011
Abstract
In various fields, several studies based on carbon nanotubes (CNTs) have been conducted. The results of previous studies, wherein CNT coatings have been incorporated as solid lubricants, demonstrate that the friction and wear characteristics of CNT coatings can be improved through the absorption/dispersion of the contact pressure by controlling the stiffness of the nanomesh structure comprising CNT strands. In this study, the friction and wear characteristics of the following are compared: CNT coating formed by spin coating of CNT solution, compressed CNT coating, and compressed/heated CNT coating (wherein CNT strands are squeezed through compression and/or heating). It is observed that the friction coefficient of the CNT coating having the largest number of voids between the CNT strands is significantly lower than those of the compressed CNT coating and the compressed/heated CNT coating. The wear tracks of the compressed CNT coating and the compressed/heated CNT coating indicate that some parts become torn or adhere into a lump. However, in the case of the CNT coating, a smooth wear surface is formed by rubbing. Furthermore, as the void space between the squeezed and adhered CNT strands decreases, the resistance to structural deformation increases, thereby resulting in an increased frictional force and a wear pattern that becomes torn or forms a lump. Hence, the results obtained from this study corroborate that the friction and wear characteristics of CNT coatings can be enhanced through the absorption/dispersion of the contact pressure by controlling the stiffness of the nanomesh structure of CNT coatings.
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