압축기 부품소재 표면 적용을 위한 탄소 기반 고체 윤활막의 마찰 및 마모 특성 평가
Evaluation of Friction and Wear Characteristics of Carbon-based Solid Lubricant Films for Surface Application of Compressor Parts
0
조회
0
다운로드
6
인용
0
참고문헌
키워드
초록
Between diaphragms made of stainless steel (SUS), which is the main component of a hydrogen gas compressor, micro-slip occurs owing to repeated bending, resulting in scratches on the surface. The surface scratch of the compressor part is a problem with airtightness, which reduces the efficiency of the compressor; in severe cases, damage is a possibility. In this study, the changes in friction and wear characteristics due to the surface polishing of SUS and carbon-based solid lubricant films (graphene and CNT) were analyzed. Bare SUS, polished SUS, graphene film, and CNT film specimens were prepared. The surface roughness of the SUS was significantly reduced by surface polishing but increased by carbon-based solid lubricating films. In contrast, the friction coefficient maintained a similar value after surface polishing but was significantly reduced by the carbon-based solid lubricant films. In particular, the graphene film exhibited the lowest initial friction coefficient, while the CNT film exhibited the lowest overall average friction coefficient. Regarding the wear rate, polished SUS exhibited the lowest value, but the surface condition of the wear track showed that the carbon-based solid lubricating films were relatively less damaged. Although the wear rate measured was largely attributed to the solid lubricating film peeling off, the SUS surface under the film was considered protected.
Abstract
Between diaphragms made of stainless steel (SUS), which is the main component of a hydrogen gas compressor, micro-slip occurs owing to repeated bending, resulting in scratches on the surface. The surface scratch of the compressor part is a problem with airtightness, which reduces the efficiency of the compressor; in severe cases, damage is a possibility. In this study, the changes in friction and wear characteristics due to the surface polishing of SUS and carbon-based solid lubricant films (graphene and CNT) were analyzed. Bare SUS, polished SUS, graphene film, and CNT film specimens were prepared. The surface roughness of the SUS was significantly reduced by surface polishing but increased by carbon-based solid lubricating films. In contrast, the friction coefficient maintained a similar value after surface polishing but was significantly reduced by the carbon-based solid lubricant films. In particular, the graphene film exhibited the lowest initial friction coefficient, while the CNT film exhibited the lowest overall average friction coefficient. Regarding the wear rate, polished SUS exhibited the lowest value, but the surface condition of the wear track showed that the carbon-based solid lubricating films were relatively less damaged. Although the wear rate measured was largely attributed to the solid lubricating film peeling off, the SUS surface under the film was considered protected.
참고문헌 (9)
- Jia, X, "Study on the diaphragm fracture in a diaphragm compressor for a hydrogen refueling station", Int. J. Hydrog. Energy (2016)[DOI]
- Wang, T, "Thermal-structural coupled analysis and improvement of the diaphragm compressor cylinder head for a hydrogen refueling station", Int. J. Hydrog. Energy, pp.199~ (2020)[DOI]
- Murashima, M, "Intelligent tribological surfaces: from concept to realization using additive manufacturing", Int. J. Mech. Mater. Des (2019)[DOI]
- Sedlacek, M, "Influence of surface preparation on roughness parameters, friction and wear", Wear (2009)[DOI]
- 배수민, "플라스틱 기어의 트라이볼로지적 특성 향상을 위한 DLC 코팅 적용", 한국트라이볼로지학회지, 35(1), pp.1~8 (2019), 한국트라이볼로지학회[DOI]
- Kim, C. L, "A highly flexible transparent conductive electrode based on nanomaterials", NPG Asia Mater (2017)[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, pp.014~ (2011)[DOI]
- 김해진, "탄소나노튜브 코팅의 마찰", 마모 특성에 대한 나노메쉬 구조의 영향, 2020, pp.36(6), 315~319[DOI]
- Miller, C, "The Effects of Surface Roughness on the Durability of Polydopamine", PTFE Solid Lubricant Coatings on NiTiNOL 60, 2019, ~