컴프레서 부품의 DLC코팅 적용에 따른 트라이볼로지적 특성 연구 = Tribological Characteristics of DLC-Coated Part in Compressor

다국어 초록 (Multilingual Abstract)

Amorphous carbon (a-C) has excellent wear resistance and, therefore is used as a coating to protect numerous mechanical components to prolong their lifetimes. Among the a-C coatings, diamond-like carbon (DLC) and DLC-containing silicon (Si-DLC) receive extensive attention owing to their enhanced wear resistance and low frictional characteristics. In this study, the friction and wear characteristics of DLC and Si-DLC coatings are analyzed. For comparative analysis, DLC-coated and Si-DLC-coated vanes are utilized with the counterpart of a roller for the friction tests. Since the lubricated mechanical components are generally vulnerable to wear when a lubricant film does not form properly, friction tests are conducted under boundary lubrication conditions to promote wear. A cylinder-on-cylinder type tribometer is used to perform the friction tests with various normal load conditions. After the friction test, a 3D laser confocal microscope is used for quantifying the wear volume to calculate the wear rate of each specimen. Consequently, the DLC-coated specimen shows a lower coefficient of friction (COF) and wear rate than the specimen without the coating, while the Si-DLC coating shows a higher COF than the bare specimen. The results of this study are expected to contribute to improving the efficiency and reliability of compressors.

참고문헌 (Reference)

1 김주희 ; 박찬형 ; 안효석, "스크래치 시험을 통한 DLC 박막 파손과 밀착 특성 평가" 한국트라이볼로지학회 33 (33): 127-133, 2017

2 김명구 ; 서국진 ; 남자현 ; 김대은, "경계윤활에서 기계 부품 소재의 트라이볼로지적 특성에관한 연구" 한국트라이볼로지학회 35 (35): 356-361, 2019

3 Liu, L, "Wear Model Based on Real-time Surface Roughness and Its Effect on Lubrication Regimes" 126 : 16-20, 2018

4 Liu, Y, "Understanding of the lubrication mechanism of reduced graphene oxide coating via dual in-situ monitoring of the chemical and topographic structural evolution" 173 : 941-952, 2021

5 Podgornik, B, "Tribological reactions between oil additives and DLC coatings for automotive applications" 200 : 1982-1989, 2005

6 Penkov, O. V, "Tribological properties of nanostructured DLC coatings deposited by C60 ion beam" 60 : 127-135, 2013

7 Lee P M, "Tribological opportunities for enhancing America’s energy efficiency" Agency-Energy (ARPA-E) 2017

8 Holmberg, K, "Topography orientation effects on friction and wear in sliding DLC and steel contacts, part 3 : Experiments under dry and lubricated conditions" 486 : 2021

9 Jeon, H. G, "The Evaluation of Wear Life Based on Accelerated Test through Analysis of Correlation between Wear Rate and Lubricant Film Parameter" 56 : 290-300, 2013

10 Kim, D. Y, "Si 이온의 첨가가 DLC 박막의 기계적 특 성에 미치는 영향" 2012

11 IEA Energy Technology Perspectives 2010, "Scenarios & Strategies to 2050 IEA International Energy Agency" 2010

12 Oguri, K, "Low friction coatings of diamond-like carbon with silicon prepared by plasma-assisted chemical vapor deposition" 5 : 2567-2571, 1990

13 김왕렬 ; 정우창 ; 조형호 ; 박민석 ; 정원섭, "Linear Ion Source를 이용한 Anode Voltage 변화에 따른 DLC박막특성" 한국표면공학회 42 (42): 179-185, 2009

14 Penkov, O. V, "Ion-Beam Irradiation of DLC-based Nanocomposite : Creation of a Highly Biocompatible Surface" 469 : 896-903, 2019

15 Hamrock, B. J, "Fundamental of Fluid Film Lubrication" NASA Reference Publication 1991

16 Yang, S. H, "Effect of environment on the tribological behavior of Si-incorporated diamond-like carbon films" 252 : 70-79, 2002

17 Choi, J. H, "Deposition of Si-DLC film and its microstructural, tribological and corrosion properties" 13 : 1353-1358, 2007

18 Grigoriev, S, "DLC-coating Application to Improve the Durability of Ceramic Tools" 28 : 4415-4426, 2019

19 Wu, X, "Characteristics and tribological properties in water of Si-DLC coatings" 17 : 7-12, 2008

20 Rejowski, E, "Application of DLC Coating in Cylinder Liners for Friction Reduction" SAE 2012