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Mesh Wick형 가변전열 히트파이프의 열전달 성능에 관한 실험적 연구
박영식(Y.S. Park),변길성(G.S. Byon),서정세(J.S. Suh),박기호(K.H. Park),이기우(K.W. Lee) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Analysis and experiment are performed to investigate the thermal performance of a<br/> heat pipe with screen meshed wick. The heat pipe was designed in 200 screen meshs, 500 mm<br/> length and 12mm O.D tube of copper, water as working fluid and nitrogen as non-condensible gas.<br/> Heat pipe used in this study has evaporator, condenser and adiabatic section, respectively.<br/> Experimental data of wall temperature distribution along axial length is presented for heat transport<br/> capacity, condensor cooling water temperature change, degrees of an inclination angle, and operating<br/> temperature.
질소이온주입에 따른 생체안전성 티타늄 임플란트의 마모특성
변응선,최종운,손선희,정용수 한국산업안전학회 1999 한국안전학회지 Vol.14 No.4
In this study, plasma source ion implantation was used to improve the wear properties of biocompatible titanium implant. In order to observe the effect of ion energy and dose on wear property of titanium implant, pin-on-disk type wear tests in Hank's solution were carried out. The friction coefficient of ion implanted specimens were increased from 0.47 to 0.65 under high energy and ion dose conditions. As increasing ion energy and ion dose, the amount of wear was reduced.