http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Cu-C-Fe₃O₄-Sn 소결 마찰재의 첨가물이 미세구조와 마찰특성에 미치는 영향
최석의(Seok Eui CHOI),함효균(Hyo Kyun HAM),오용택(Yong Taeg OH),최희범(Hee Bum CHOI),김향래(Hang Rae KIM),최형기(Hyung Gi CHOI),이현규(Hyun Kyu LEE),신동찬(Dong Chan SHIN) 한국트라이볼로지학회 2009 한국트라이볼로지학회 학술대회 Vol.2009 No.11
The effects of zircon silicate (ZrSiO₄), Zinc oxide (ZrO₂), and Alumina (Al₂O₃), silicon carbide (SiC) as additives on the microstructure and tribological properties of sintered Cu-C-Fe₃O₄-Sn for racing car application have been studied. All the specimens were sintered at 750℃ for 30 min. The abrasive characteristics was tested on a 1/5 scale dynamometer. Effectiveness, fade & recovery, and noise tests were carried out to analyze the friction characteristics. The sintered specimens showed better abrasive properties in the order of ZrSiO₄ < ZrO₂ < Al₂O₃ < SiC. In the best additive of SiC, the friction coefficient was found to be 0.482 and showed less than 10% degradation during life time test at 100 Ian and 130 ㎞.
Cu-Sn 소결 마찰재에 C와 Cu 함량이 마찰특성에 미치는 영향
함효균(Hyo Kyun HAM),최석의(Seok Eui CHOI),오용택(Yong Taeg OH),최희범(Hee Bum CHOI),김향래(Hang Rae KIM),최형기(Hyung Gi CHOI),이현규(Hyun Kyu LEE),신동찬(Dong Chan SHIN) 한국트라이볼로지학회 2009 한국트라이볼로지학회 학술대회 Vol.2009 No.11
We have investigated the effects of graphite and cupper contents on the tribological properties of Cu-Sn sintered friction materials. The base materials used was Cu-Sn alloy. We varied graphite contents from 20 to 30 vol% with an interval of 5% and Cu contents of 25 and 35 vol%. All the specimens were sintered for 30 min at 750℃, nitrogen atmosphere by hot press method. Their friction and abrasive characteristics was evaluated by 1/5 Scale dynamometer. When the Cu content is decreased, we can get higher friction coefficient and less abrasion. The lowest abrasion was obtained at the condition of 30 vol% graphite. The highest friction coefficient was obtained in the specimen of 20 vol% graphite.
박형배(Hyung Bae Park),정성필(Sung Pil Jung),이필구(Pil Gu Lee),최희범(Hee Bum Choi),손태관(Tae Kwan Son) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
The brake system is a very important system for automobile safety. However, existing brake evaluation methods are not suitable for evaluating high performance brake systems. In this paper, driving in the F1 Circuit and measure data and developed an evaluation method for brake systems based on braking energy and braking power.
정진오(Jin Oh Chung),고상렬(Sang Ryul Go),최종근(Jong Geun Choi),최희범(Hee Bum Choi),손태관(Tae Kwan Son) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
To clarify the effect of friction temperature on transfer film formation in NAO friction material, friction tests composed of 100 consecutive braking under constant temperature were conducted at temperature of 300℃, 400℃, 500℃ and 600℃, respectively. After friction tests, counterpart disks used were collected for the examination of transfer film formation on friction surface. Friction test results showed that the friction coefficient did not change much with repeated braking under 500℃, but the friction coefficient decreased with repeated braking at 600℃. The transfer film was hardly found under 400℃, but was well developed at high temperature of 600℃. The decrease of friction coefficient with repeated braking in the case of 600℃ was attributed to the development of transfer film with repeated braking.