http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Oxytetracycline과 Tetracycline의 약욕에 따른 양식 어류 (넙치, 조피볼락, 참돔)의 조직 내 잔류량의 변화
김석 ( Suk Kim ),정희식 ( Hee Sik Chung ),강석중 ( Seok Joong Kang ),하지영 ( Ji Young Ha ),정원철 ( Won Chul Jung ),허성혁 ( Sung Hyek Heo ),신용운 ( Yong Woon Shin ),김경원 ( Kyoung Won Kim ),김대근 ( Dae Geun Kim ),이후장 ( Hu 한국어병학회 2006 한국어병학회지 Vol.19 No.2
열필라멘트 CVD에서 전압 인가에 의한 다이아몬드의 핵생성 촉진
최균,강석중,황농문,Choi, Kyoon,Kang, Suk-Joong L.,Hwang, Nong-M. 한국세라믹학회 1997 한국세라믹학회지 Vol.34 No.6
The effect of various processing parameters, in particular the substrate and filament temperature, on the nucleation of diamond has been studied for the hot filament CVD process with a negative bias on the substrate. As far as the substrate temperature was maintained around the critical temperature of 73$0^{\circ}C$, the nucleation of diamond increased with increasing filament temperature. The maximum nucleation density of ~ 2$\times$109/$\textrm{cm}^2$ was obtained under the condition of filament temperature of 230$0^{\circ}C$, substrate temperature of 75$0^{\circ}C$, bias voltage of 300V, methane concentration of 20%, and deposition time of 2 hours. This nucleation density is about the same as those obtained in previous investigations. For fixed substrate temperatures, the nucleation density varies up to about 103 times depending on experimental conditions. This result is different from that of Reinke, et al. When the substrate temperature was above 80$0^{\circ}C$, a silkworm~shaped carbon phase was co-deposited with hemispherical microcrystalline diamond, and its amount increased with increasing substrate temperature. The Raman spectrum of the silkworm-shaped carbon was the same as that of graphitic soot. The silkworm-shaped carbon was etched and disappeared under the same as that of graphitic soot. The silkworm-shaped carbon was etched and disappeared under the deposition condition of diamond, implying that it did not affect the nucleation of diamond.
Na<sub>1/2</sub>Bi<sub>1/2</sub>TiO<sub>3</sub>-BaTiO<sub>3</sub> 계에서 입자모양과 입자성장 거동
문경석,강석중,Moon Kyoung-Seok,Kang Suk-Joong 한국분말야금학회 2006 한국분말재료학회지 (KPMI) Vol.13 No.2
The grain growth behavior of $0.95Na_{1/2}Bi_{1/2}TiO_{3}-0.05BaTiO_{3}$ (NBT-5BT) has been investigated with respect to the grain shape. The powder compacts of NBT-5BT were sintered at 1200 for various times. The corresponding equilibrium shape was a round-edged cube with flat {100}-faces. Abnormal grains were not observed in the specimens sintered for 1 to 12 h but abnormal grains appeared when sintered for 24 h. Before the formation of abnormal grains, a valley was observed in the measured grain size distribution of NBT-5BT, showing that the grain size distribution was a combination of two unimodal distributions. The present result suggests that the grain growth in NBT-5BT was governed by the growth of facet planes which would occur via 2-dimansional nucleation and growth.
ZnO의 화학구동력에 의한 $MgAl_2O_4$의 입계이동
최균,조의성,강석중,Choi, Kyoon,Cho, Eu-Seong,Kang, Suk-Joong 한국세라믹학회 1992 한국세라믹학회지 Vol.29 No.11
The chemically induced grain-boundary migration has been studied in MgAl2O4 spinel under ZnO atmosphere. MgAl2O4 compacts been prepared by sintering powder mixture of Al2O3 and MgO at 1$600^{\circ}C$ for 60 h in air. The sintered MgAl2O4 has been heat-treated at 150$0^{\circ}C$ in a ZnO atmosphere. During the heat-treatment grain boundaries have become curved or faceted, and the total area of grain boundaries have increased. In the migrated region, the ZnO content is higher by 6 wt% than that in other regions, indicating that the migration was induced by addition of ZnO. In some shrinking grains, the faceted planes of different grain boundaries for the same grain are parallel to each other. This result provide an experimental support for the coherency strain energy in diffusion layer of the shrinking grain as being the major driving force. Calculated coherency strain energy of MgAl2O4 shows the maximum at {111} planes and the minimum at {100} planes. Although the minimum surface energy is at {111} planes, the faceted moving boundaries are expected to be {100} planes because of lowest driving force for the grain-boundary migration.
습식 워터 젯 정밀 절삭 가공용 다이아몬드 오리피스 제조 및 응용
김연철,박희동,조재한,강석중,Kim, Youn-Chul,Park, Hee-Dong,Jho, Jae-Han,Kang, Suk-Joong L 한국분말야금학회 2008 한국분말재료학회지 (KPMI) Vol.15 No.6
High-pressure abrasive entrained jet have rapidly become important machining technology over the last two decades. However, suspension jet by high-pressure has been recently developed for packaging sawing. Ideally, diamond materials should be used for components in abrasive water-jet systems that are subject to high erosive conditions. Using the diamond orifices improve maintenance and extend wear part life. This paper gives insights to using an abrasive suspension jet with diamond orifice. The influences of orifice material and orifice design are evaluated.