http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 김광배 (검색결과 303 건)
- 무료
- 기관 내 무료
- 유료
-
불활성 가스의 O<sub>2</sub>와 CO 불순물 제거를 위한 Ni 촉매의 물성 평가
김광배,진새라,김은석,임예솔,이현준,김성훈,노윤영,송오성,Kim, Kwangbae,Jin, Saera,Kim, Eunseok,Lim, Yesol,Lee, Hyunjun,Kim, Seonghoon,Noh, Yunyoung,Song, Ohsung 한국산학기술학회 2020 한국산학기술학회논문지 Vol.21 No.4
반도체 산업용 9N 이상의 초고순도 N<sub>2</sub>, Ar 등 불활성 가스 제조를 위해 가스 정제공정에 사용되고 있는 Ni 촉매의 물성 평가 및 촉매적 특성을 확인하였다. 조성이 다른 원기둥 형태의 C1, 츄러스 형태의 C2의 두 가지 Ni 촉매에 대해 비교 평가를 진행하였다. Ni 촉매의 형상과 미세구조를 분석하기 위해 광학현미경과 FE-SEM을 이용하였으며, 조성 확인 및 물성을 분석하기 위해 EDS, XRD, 그리고 micro-Raman 분석을 이용하였다. 또한 Ni 촉매의 비표면적 및 촉매적 특성을 확인하기 위해 BET, Pulse Titration 분석을 진행하였다. 조성 분석결과, C1의 경우, 상대적으로 graphite가 불순물로 다량 포함되어 있는 것을 확인하였으며, C2는 C1에 비해 Ni의 함량이 높은 것을 확인하였다. 비표면적 분석 결과, C2의 비표면적이 C1보다 약 1.69배 정도 큰 것을 확인할 수 있었다. 촉매적 특성분석 결과, 상온에서 O<sub>2</sub>와 CO 불순물 제거 정도가 C2가 우수함을 확인하였다. 따라서 반도체 산업용 초고순도 불활성 기체 제조를 위한 Ni 촉매로는 불순물이 적고, 비표면적이 크며, 상온에서 O<sub>2</sub>와 CO 제거 성능이 우수한 C2가 적합함을 확인하였다. This study examined the catalytic property of Ni-catalyst used in the gas purifying process to manufacture inert gases of N2 and Ar with high-purity over 9N for semiconductor industrial applications. Two types of Ni-catalysts with a cylindrical shape (C1) and churros shape structure (C2) were compared for the assessment. Optical microscopy and FESEM were used to analyze the shape and microstructure of the Ni-catalyst. EDS, XRD, and micro-Raman characterization were performed to examine the composition and properties. BET and Pulse Titration analyses were conducted to check the surface area and catalytic property of the Ni-catalyst. From the composition analysis results, C1 contained a relatively large amount of graphite as an impurity, and C2 contained higher Ni contents than C1. From specific surface area analysis, the specific surface area of C2 was approximately 1.69 times larger than that of C1. From catalytic property analysis, outstanding performance in O<sub>2</sub> and CO impurity removal was observed at room temperature. Therefore, C2, having low-impurity and large specific surface area, is a suitable catalyst for the high-purity inert gas process in the semiconductor industry because of its outstanding performance in O<sub>2</sub> and CO impurity removal at room temperature.
-
-
김광배,임예솔,김은석,진새라,이현준,김성훈,노윤영,송오성 대한금속·재료학회 2020 대한금속·재료학회지 Vol.58 No.7
The properties and H2O adsorption characteristics of two types of zeolites (3A and 13X) with the same shape but different element composition were identified. These zeolites are used in gas purification processes to manufacture 9N ultra-pure inert gases for semiconductor process applications. To analyze the shape and microstructure of the zeolites, an optical microscope and FE-SEM were used. EDS, micro-Raman, and XRD analysis were conducted to analyze their compositions and properties. BET analysis was performed to identify their specific surface areas. Finally, a breakthrough analysis was conducted at room temperature. Based on the results of the optical and microstructure analyses, the cylindrical shaped 3A and 13X were determined to be composed of 2.5-um polyhedrons and 1.4-um massive shapes, respectively. The results of the compositional analysis showed that the main components of both zeolites were Si and Al, whereas K and Na existed in 3A and 13X, respectively. The results of the specific surface area analysis demonstrated that the surface area of 13X was 32 times larger than that of 3A. Specifically, the total specific surface areas were 22.42 and 720.33 m2/g for 3A and 13X, respectively. The results of the H2O adsorption characteristic analysis showed that the H2O concentration of 13X was 1.33 times higher than that of 3A. Therefore, with respect to using zeolite for gas purification process applications, 13X might be more suitable to achieve excellent specific surface area and remarkable H2O adsorption.
-
-
건설현장의 IoT기반 스마트 안전관리시스템 구축을 위한 아키텍처에 관한 연구
김광배,이제동,김의정,신용태 한국IT정책경영학회 2021 한국IT정책경영학회 논문지 Vol.13 No.1
The fourth industrial revolution technology, which has become a hot topic in recent years, is applied to the construction sector to increase the value of the use of IoT by utilizing various forms of sensors, to prevent workers' risks in advance, and to develop an architecture for building an IoT-based smart safety management system at construction sites. To this end, the concept of IoT was identified and the safety management process on the ground was developed as an architecture that takes the convenience of workers into consideration. In order to build a smart safety management system, available dangerous areas were schematized, applicable areas were grasped, and various prior prediction analysis algorithms were utilized to analyze prior prediction types related to disaster prevention. Based on this, the tendency of the user in the dangerous area is grasped, and a smart safety management system based on the construction site IoT foundation is constructed by providing prior information in the dangerous area.
-
IoT 기반 건설안전 서비스의 수용의도에 영향을 미치는 요인에 관한 연구
김광배,정지영,송일형,신용태 한국IT정책경영학회 2021 한국IT정책경영학회 논문지 Vol.13 No.2
Super-consolidated technology is cited as the main technological factor of the 4th Industrial Revolution. Through IoT technology, various equipment, data, goods and processes are organically connected to each other, and intelligent services tailored to location and time are being actively expanded as services to improve the working environment at the level of preventing industrial accidents at construction sites and to prevent accidents involving workers. The IoT Infrastructure Construction Safety Service provides information in a practical and comfortable environment by securing safety zones in hazardous areas at construction sites and providing workers with safe work environments. In this study, a questionnaire was conducted on companies using IoT infrastructure construction safety services, and research was carried out on factors affecting the intention to accept IoT infrastructure construction safety services effective in accident prevention.
-
-
ZrO2 전자전달층 두께에 따른 우레아 첨가 페로브스카이트 태양전지의 물성
김광배,송오성 대한금속·재료학회 2021 대한금속·재료학회지 Vol.59 No.1
The properties of 6 mM urea added perovskite solar cells (PSCs) according to ZrO2 electron transport layer (ETL) thicknesses of 204, 221, 254, and 281 nm were examined. A solar simulator was used to characterize the photovoltaic properties of the cell. Optical microscopy and field emission scanning electron microscope were used for the microstructure analysis, and a 3D profiler was used to analyze surface roughness. UV-VIS-NIR was used to analyze transmittance. From the photovoltaic analysis result, an energy conversion efficiency (ECE) of 14.93% was exhibited by the cell with a 221 nm-ZrO2 layer and added urea. From the analysis result of microstructure and surface roughness, 384 nm grain size was obtained through appropriate surface roughness of base layer for perovskite growth and the grain size coarsening by the urea under the 221 nm-ZrO2 condition. For this reason, ECE increased as the resistance of the grain boundary decreased. When the thickness of the ETL was increased above 250 nm-ZrO2, the ECE decreased due to the reduction in light transmittance, and light reaching the perovskite layer. Therefore, the ECE of PCS could be enhanced by selecting a ZrO2 layer with the appropriate thickness and the addition of urea.
-
-
DBpia연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
