대기압/진공 조건의 트라이보 시험기를 이용한 박막 코팅의 마찰/마모 특성 비교
Comparison of Friction and Wear Characteristics of Thin Film Coatings Using Tribotesters at Atmospheric/Vacuum Conditions
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In various industries, thin film coatings are used to improve friction and wear characteristics. Various types of tribotesters are used to evaluate the friction and wear characteristics of such thin film coatings. In this study, we fabricated a micro-tribotester and Tribo-scanning electron microscopy (SEM) to compare the friction and wear characteristics of copper (Cu) coatings under an atmospheric pressure and a vacuum condition, respectively. The reliability of the different types of tribotesters was evaluated by performing calibrations for the sensor to measure the friction forces and normal loads. Using the two different types of devices, the friction and wear tests are conducted at the same experimental conditions excluding environment conditions such as the atmospheric pressure and vacuum condition. The friction coefficient at the vacuum condition is lower than at the atmospheric pressure. This difference in friction characteristics is due to the fact that wear phenomena occur differently according to the atmospheric pressure and vacuum condition. At the atmospheric pressure, the abrasive wear is the main wear mechanism. At the vacuum condition, the adhesive wear is the main wear mechanism. The reason for the difference in the wear mechanism of the Cu coating at the atmospheric pressure and the vacuum condition is that the oxidation phenomenon, which does not appear at the vacuum condition, occurs at the atmospheric pressure; therefore, the characteristics of the Cu coating change accordingly.
Abstract
In various industries, thin film coatings are used to improve friction and wear characteristics. Various types of tribotesters are used to evaluate the friction and wear characteristics of such thin film coatings. In this study, we fabricated a micro-tribotester and Tribo-scanning electron microscopy (SEM) to compare the friction and wear characteristics of copper (Cu) coatings under an atmospheric pressure and a vacuum condition, respectively. The reliability of the different types of tribotesters was evaluated by performing calibrations for the sensor to measure the friction forces and normal loads. Using the two different types of devices, the friction and wear tests are conducted at the same experimental conditions excluding environment conditions such as the atmospheric pressure and vacuum condition. The friction coefficient at the vacuum condition is lower than at the atmospheric pressure. This difference in friction characteristics is due to the fact that wear phenomena occur differently according to the atmospheric pressure and vacuum condition. At the atmospheric pressure, the abrasive wear is the main wear mechanism. At the vacuum condition, the adhesive wear is the main wear mechanism. The reason for the difference in the wear mechanism of the Cu coating at the atmospheric pressure and the vacuum condition is that the oxidation phenomenon, which does not appear at the vacuum condition, occurs at the atmospheric pressure; therefore, the characteristics of the Cu coating change accordingly.
참고문헌 (21)
- 배수민, "플라스틱 기어의 트라이볼로지적 특성 향상을 위한 DLC 코팅 적용", 한국트라이볼로지학회지, 35(1), pp.1~8 (2019), 한국트라이볼로지학회[DOI]
- Zhang, J., "Anti-Wear Titanium Carbide Coating on Low-Carbon Steel by Thermo-Reactive Diffusion", Surf. Coat. Technol., 364, pp.265~272 (2019)
- Dhandapani, V. S., "Enhancement of Tribological Properties of DLC by Incorporation of Amorphous Titanium Using Magnetron Sputtering Process", Ceram. Int., 45(9), pp.11971~11981 (2019)
- Kim, D. E., "A Novel Approach to Wear Reduction of Micro-Components by Synthesis of Carbon Nanotube-Silver CompositeCoating", CIRP Ann-Manuf. Technol, 60, pp.559~602 (2011)
- 최승윤, "고온 환경에서 합금의 마모 및 마찰 특성에 관한 연구", 한국트라이볼로지학회지, 35(1), pp.24~29 (2019), 한국트라이볼로지학회[DOI]
- Shinji Kato, "Effects of hydraulic oil and lubricant additives on dynamic friction properties under various reciprocating sliding conditions", Friction (2019), Springer Science and Business Media LLC[DOI]
- Kennedy, F. E., "Contact Temperatures and Their Influence on Wear During Pin-on-disk Tribotesting", Tribol. Int., 82, pp.534~542 (2019)
- Penkov, O. V., "Design and Construction of a Micro-Tribotester for Precise In-Situ Wear Measurements", Micromachines, 8(4), pp.103~ (2017)
- 김해진, "SEM 내부에 설치된 트라이보 시험기를 통한 금속 코팅의 실시간 마찰", 마모 특성 분석, 2018, pp.34(6), 318~324[DOI]
- 김창래, "Investigation of Micro-Abrasion Characteristics of Thin Metallic Coatings by In-Situ SEM Scratch Test", International Journal of Precision Engineering and Manufacturing, 17(9), pp.1139~1147 (2016), 한국정밀공학회
- Heinrichs, J., "Transfer of Titanium in Sliding Contacts-New Discoveries and Insights Revealed by in Situ Studies in the SEM", Wear, 315(1), pp.87~94 (2014)
- Ovaert, T. C., "Friction Studies of Coated and Uncoated Cemented Carbide in Controlled Environment", Tribol. Lubr., 11(5), pp.66~70 (1995)
- Ding, H. H., "Wear Mapping and Transitions in Wheel and Rail Materials Under Different Contact Pressure and Sliding Velocity Conditions", Wear, 352-353, pp.1~8 (2016)
- Shabani M., "Effect of Relative Humidity and Temperature on the Tribology of Multilayer Micro", Nanocrystalline CVD Diamond Coatings, 2017, pp.73, 190~198
- Fuzhi Song, "Tribological performance of filled PTFE-based friction material for ultrasonic motor under different temperature and vacuum degrees", Journal of Applied Polymer Science, 134(39), pp.45358~ (2017), Wiley[DOI]
- Zhao, J. H., "Simultaneous Measurement of Young’s Modulus, Poisson Ratio, and Coefficient of Thermal Expansion of Thin Films on Substrates", J. Appl. Phys, 87(3), pp.1575~1577 (2000)
- Field, J. E., "The Mechanical and Strength Properties of Diamond", Rep. Prog. Phys, 75(12), pp.126505~ (2012)
- Afferrante, L., "Interacting and Coalescing Hertzian Asperities: A New Multiasperity Contact Model", Wear, 278-279, pp.28~33 (2012)
- Tjong, S. C., "Abrasive Wear Behavior of TiB2 Particle-Reinforced Copper Matrix Composites", Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process., 282(1-2), pp.183~186 (2000)
- Bhushan, B., "Comprehensive Model for Scale Effects in Friction Due to Adhesion and Two- and Three-Body Deformation (Plowing)", Acta Mater., 52(8), pp.2461~2474 (2004)
- Tang, Y., "Friction and Wear Properties of Copper Matrix Composites Reinforced with Short Carbon Fibers", Mater. Des., 29(1), pp.257~261 (2008)