http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
양산용 80 kW급 RF Plasma Torch System 개발 및 Si 나노분말 제조 공정 연구
송석균,손병구,김병훈,이문원,신명선,최선용,이규항,김성인,Song, Seok-Kyun,Son, Byungkoo,Kim, Byunghoon,Lee, Moonwon,Sin, Myungsun,Choi, Sunyong,Lee, Kyu-Hang,Kim, Seong-In 한국진공학회 2013 Applied Science and Convergence Technology Vol.22 No.2
80 kW RF 플라즈마 토치 시스템을 개발하기 위하여, 토치 시스템에 대한 온도, 유체 거동 분석 등의 보다 많은 정보의 추출을 위하여 3차원 시뮬레이션을 진행했다. 파우더 주입관 위치, 입력 전류 변화에 따른 플라즈마 생성 특성, 세라믹 원통관 길이에 따른 플라즈마 방전 특성, 및 공정가스 유량에 따른 플라즈마 온도특성 등을 시뮬레이션 했다. 시뮬레이션을 통해 설계 제작된 RF 열 플라즈마 토치의 경우, 최대 89.3 kW까지 파워 인가가 측정되었다. 개발된 80 kW급 RF 열 플라즈마 토치 시스템의 양산성 평가로 Si 나노분말을 제조하고 특성을 고찰하였다. Si 나노분말의 생산량이 평균 539 g/hr의 양산 수준과 71.6%의 높은 수율을 달성했으며, 제조된 나노 분말은 $D_{99}/D_{50}$가 1.98의 좋은 입경 균일 분포도를 나타내었다. In order to develop of 80 kW RF plasma torch system, we achieved three-dimensional simulations for the extraction of more information as temperature in torch and fluid behavior analysis, etc. The position of powder injection tube, the plasma discharge characteristics with various input current and various length of ceramic tube, and the plasma temperature characteristics with process gas flow rate such those was simulated. RF thermal plasma torch designed by simulation was manufactured that was measured to the maximum of 89.3 kW power. The mass production using developed 80 kW RF thermal plasma torch system were investigated by characteristics manufactured of Si nano powder. The mass-production level of Si nano-powder was average of 539 g/hr and high yield rate of 71.6%, respectively. The particle size distribution $D_{99}/D_{50}$ of manufacturing nano-powder was investigated to 1.98 as a good uniform.
李文遠 제주대학교 1976 논문집 Vol.8 No.-
The present study area is located between Go San and Seong San Po along the southern cost of the Je Ju island. This study is based on the investigation during the period, september, 1976 to november, 1976. Je Ju island is volcanic island that has begun to exist from the end of pliocence or early pleistocene. It was about one milli on years ago. Geology of the island is composed of trachyte, trachyte-andesite and basalts with some sedimentary rocks. The baslat is most widely ditstributed, the trachyte and tranchyte-andesite are in the next order, and sedimentary rocks are least abundant. The sedimentary formations which are composed of volcanic ashes and cinders with minor gravels are developed mainly adjacent to the southern coast. It can be classifed aqueous clastic rocks and volcanic clastic rocks and by the distributed plase, it can be named as follows. 1) Seong San Po formation 2) Seo Gui Po formation 3) Young Meo Ri formation 4) Song Ack San formation 5) Go San Jormation The average of each formation is ten to thirty meters, Seo Gui Po, Song Ack San, Go San formation is largely composed of sandstone, Seong San Po, Yong Meo Ri formaion is composed of tuff, lapillituff, and agglomerate. It can be found minor gravels such as granite, gneiss, quartzite in the Song Ack San, Go San formation, and Go San formation is alternated sandstone and basalt block strata. The latter suggests that the basalt were erupted over 4 times during forming Go San sedimentary formation. Seo Gui Po formation appears to have been formed during the end of pliocence by the fossil and another erupted the pyoseonri basalt(?).