전기 분사 증착 방식을 이용한 탄소 나노 튜브 박막의트라이볼로지적 특성에 관한 연구
Tribological Properties of Carbon Nanotube Thin Films by using Electrodynamic Spraying Method
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Carbon-based coatings, including carbon nanotubes (CNTs), graphene, and buckyball (C60), receive much interest because of their outstanding mechanical and electrical properties for a wide range of electromechanical component-based applications. Previous experimental results demonstrate that these carbon-based coatings are promising solid lubricants because of their superior tribological properties, and thus help prolong the lifetime of silicon-based applications. In this study, CNT coatings are deposited on a bare silicon (100) substrate by electrodynamic spraying under different deposition conditions. During the coating deposition, the applied voltage, CNT concentration of the solution, distance between the injecting nozzle and the substrate and diameter of the injecting nozzle are optimized to control the thickness and surface roughness of the CNT coatings. The surface morphology and thickness of the coatings are characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM), respectively. The friction and wear properties of the coatings are investigated by using a pin-on-reciprocating-type tribotester under various experimental conditions. The friction coefficient of the CNT coating is as low as 0.15 under high normal loads. The overall results reveal that CNT coatings deposited by electrodynamic spraying provide relatively uniform with superior lubrication performance.
Abstract
Carbon-based coatings, including carbon nanotubes (CNTs), graphene, and buckyball (C60), receive much interest because of their outstanding mechanical and electrical properties for a wide range of electromechanical component-based applications. Previous experimental results demonstrate that these carbon-based coatings are promising solid lubricants because of their superior tribological properties, and thus help prolong the lifetime of silicon-based applications. In this study, CNT coatings are deposited on a bare silicon (100) substrate by electrodynamic spraying under different deposition conditions. During the coating deposition, the applied voltage, CNT concentration of the solution, distance between the injecting nozzle and the substrate and diameter of the injecting nozzle are optimized to control the thickness and surface roughness of the CNT coatings. The surface morphology and thickness of the coatings are characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM), respectively. The friction and wear properties of the coatings are investigated by using a pin-on-reciprocating-type tribotester under various experimental conditions. The friction coefficient of the CNT coating is as low as 0.15 under high normal loads. The overall results reveal that CNT coatings deposited by electrodynamic spraying provide relatively uniform with superior lubrication performance.
참고문헌 (14)
- Umeda, J., "Friction behavior of network-structured CNT coating on pure titanium plate", Appl. Surf. Sci., 357, pp.721~727 (2015)
- Miyoshi, K., "Solid lubrication by multiwalled carbon nanotubes in air and in vacuum", Tribol. Lett., 19(3), pp.191~201 (2005)
- Reinert, L., "Tribo-mechanisms of carbon nanotubes : Friction and wear behavior of CNT-reinforced nickel matrix composites and CNT-coated bulk nickel", Lubricants, 4(2), pp.11~ (2016)
- 정연우, "HIPS 복합재의 전기적 및 마모 특성에 미치는 다중벽 탄소나노튜브의 영향", 한국트라이볼로지학회지, 31(3), pp.95~101 (2015), 한국트라이볼로지학회[DOI]
- 이현우, "다중벽 탄소나노튜브를 함유한 PC", ABS 복합재의 마모 특성및 다중벽 탄소나노튜브의 유출 평가, 2014, pp.30(5), 278~283[DOI]
- Kim, D. -E., "A novel approach to wear reduction of micro-components by synthesis of carbon nanotube-silver composite coating", CIRP Ann. Manuf. Technol., 60(1), pp.599~602 (2011)
- Reinert, L., "Long-lasting solid lubrication by CNT-coated patterned surfaces", Sci. Rep, 7, pp.42873~ (2017)
- Kim, H. -J., "MD simulation of the frictional behavior of CNTs with respect to orientation", Tribol. Int., 50, pp.51~56 (2012)
- Koumoulos, E. P., "Lubricity assessment, wear and friction of CNT-based structures in nanoscale", Lubricants, 5(2), pp.18~ (2017)
- Dorri Moghadam, A., "Mechanical and tribological properties of self-lubricating metal matrix nanocomposites reinforced by carbon nanotubes(CNTs)and graphene-A review", Compos. Part B Eng., 77, pp.402~420 (2015)
- Cumings, J., "Low-friction nanoscale linear bearing realized from multiwall carbon nanotubes", Science, 289(5479), pp.602~604 (2000)
- Mai, Y., "Electrochemically reduced graphene oxide nanosheet coatings as solid lubricants in humid air", Materials Research Bulletin, 102, pp.324~329 (2018)
- Kim, H. -J., "Tribological properties of graphene oxide nanosheet coating fabricated by using electrodynamic spraying process", Tribol. Lett., 57(3), pp.27~ (2015)
- Kim, H. -J., "Water lubrication of stainless steel using reduced graphene oxide coating", Sci. Rep., 5, pp.17034~ (2015)