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안정욱(JeongUk Ahn),안승균(SeongGyun Ahn),여인웅(InWoong Lyo),김형익(HyeongIk Kim),김웅(Woong Kim) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
We have developed a well designed sputter DLC coating on valve lifter, which has reduced the mechanical friction by 40% and improved the fuel efficiency by 0.8%. This paper is focusing on mutual correlation between friction characteristic and the microstructure of DLC such as hydrogen concentration, sp3/sp2 ratio and I(D)/I(G).