하이브리드 선형이온원에 의한 유압 기어펌프용 Cr-DLC코팅막의 특성과 효율성능

차순용; 김왕렬; 박민석; 권세훈; 정원섭; 강명창

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자료유형: 학술저널

저자정보: 차순용 김왕렬 박민석 권세훈 정원섭 강명창

저널정보: 한국분말야금학회 한국분말야금학회지 한국분말야금학회지 제17권 제6호

발행연도: 2010.1

수록면: 456 - 463 (8page)

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This paper describes the results of the application of Cr-Diamond-like carbon (DLC) films for efficiency improvement through surface modification of spur gear parts in the hydraulic gear pump. Cr-DLC films were successfully deposited on SCM 415 substrates by a hybrid coating process using linear ion source (LIS) and magnetron sputtering method. The characteristics of the films were systematically investigated using FE-SEM,nano-indentation, sliding tester and AFM instrument. The microstructure of Cr-DLC films turned into the dense and fine grains with relatively preferred orientation. The thickness formed in our Cr buffer layer and DLC coating layer were obtained the 487 nm and 1.14 μm. The average friction coefficient of Cr-DLC films considerably decreased to 0.15 for 0.50 of uncoated SCM415 material. The hardness and surface roughness of Cr-DLC films were measured 20 GPa and 10.76 nm, respectively. And then, efficiency tests were performed on the hydraulic gear pump to investigate the efficiency performance of the Cr-DLC coated spur gear. The experimental results show that the volumetric and mechanical efficiency of hydraulic gear pump using the Cr-DLC spur gear were improved up to 2~5% and better efficiency improvement could be attributed to its excellent microstructure, higher hardness, and lower friction coefficient. This conclusion proves the feasibility in the efficiency improvement of hydraulic gear pump for industrial applications.

#Cr-DLC #Hybrid linear ion source deposition #Friction coefficient #Volumetric efficiency #Hydraulic gear pump

참고문헌 (16)

참고문헌 신청

H. Walker / 2005 / Gear Pump Teeth / Automobile Eng 478 : 347 ~

J. Ivantysyn / 2001 / Hydrostatic Pumps and Motors / Academia Book International

J. Robertson / 1992 / / Surface and Coating Technology 50 : 185 ~

J. Robertson / 1992 / Surface and Coating Technology 50 : 185 ~

J. Robertson / 1993 / / Diamond & Related Materials 2 : 984 ~

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