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진공 압출성형 및 래밍성형 공정에 의한 탄화규소 캔들 필터 제조 및 특성 (II)
한인섭,서두원,김세영,홍기석,우상국,김영욱,Han, In-Sub,Seo, Doo-Won,Kim, Se-Young,Hong, Ki-Seog,Woo, Sang-Kuk,Kim, Young-Wook 한국세라믹학회 2010 한국세라믹학회지 Vol.47 No.6
Porous SiC candle filter preforms were fabricated by extrusion and ramming process. To fabricate SiC candle filter preform, commercially available F180 mesh ($85\;{\mu}m$) $\alpha$-SiC powder and $44\;{\mu}m$ mullite, $CaCO_3$ powder were used as the starting materials. The candle type preforms were fabricated by vacuum extrusion and ramming process, and sintered at $1400^{\circ}C$ 2 h in air atmosphere. Corrosion test of the sintered candle filter specimens as forming method was performed at $600^{\circ}C$ for 2,400 h in simulated IGCC syngas atmosphere. The effect of forming method on mechanical properties, pore distribution, microstructure and crystalline phase was investigated.
액상 Ni/Si/Co 침투에 의한 반응결합 TiC 복합체의 치밀화
한인섭,우상국,배강,홍기석,서두원,정윤중,Han, In-Sub,Woo, Sang-Kuk,Bai, Kang,Hong, Ki-Suk,Seo, Doo-Won,Chung, Yoon-Jung 한국세라믹학회 1998 한국세라믹학회지 Vol.35 No.10
The reaction-bonded TiC-Ni/Si/Co composites were prepared by the melt infiltration of Co, Si, and Ni me-tal into the TiC preforms. The miocrostructure reaction composition and mechanical properties were in-vestigated. In the case of the melt infiltrated with Co and Ni TiC grain shape was changed from angular to spherical shape with the average grain size of ∼5$\mu\textrm{m}$. In the case of the melt infiltrated with Co/Si or Ni/Si, Si was reacted with TiC particles and formed SiC particles. The bending strength of both specimens which have atomic ratio of 3 were 710 MPa and 515 MPa respectively. In the case of the melt infiltrated with Ni/Si/Co,. nonstoichiometric TiC was formed and its bending strength decreased to 420 MPa.
한국이 일본의 인쇄문화에 미친 영향(4) - 초조대장경 소장 교토 남선사(고려시대 초조대장경 1800여권 소장)
한인섭,Han, In-Seop 대한인쇄문화협회 2008 프린팅코리아 Vol.7 No.12
충청타임즈 '임진왜란은 활자전쟁이었나' 취재팀은 현존 최고(最古) 금속활자본이자 유네스코 세계기록유산에 등재된 '직지'등 고려시대와 조선초 금속활자 인쇄술이 임진왜란을 통해 일본에 전래된 흔적을 찾아 집중 조명하기 위해 최근 일본 현지취재를 진행했다. 이에 본 지에서는 이번 일본 취재 팀장으로 활동한 한인섭 부장의 기고를 통해 한국이 일본의 인쇄문화에 미친 영향을 알아 본다.
한국이 일본의 인쇄문화에 미친 영향(4) - 남선사 일체평 전래 루트 (중(中).고려서 수집.후쿠오카.고베 거쳐 교토 이전)
한인섭,Han, In-Seop 대한인쇄문화협회 2009 프린팅코리아 Vol.8 No.1
충청타임즈 '임진왜란은 활자전쟁이었나' 취재팀은 현존 최고(最古) 금속활자본이자 유네스코 세계기록유산에 등재된 '직지'등 고려시대와 조선초 금속활자 인쇄술이 임진왜란을 통해 일본에 전래된 흔적을 찾아 집중 조명하기 위해 최근 일본 현지취재를 진행했다. 이에 본 지에서는 이번 일본 취재 팀장으로 활동한 한인섭 부장의 기고를 통해 한국이 일본의 인쇄문화에 미친 영향을 알아 본다.
초음파 분무 열분해법에 의한 ZnO 나노구조 성장시 Leidenfrost 효과에 의한 성장 거동 변화
한인섭,박일규,Han, In Sub,Park, Il-Kyu 한국재료학회 2017 한국재료학회지 Vol.27 No.11
We investigated a Leidenfrost effect in the growth of ZnO nanostructures on silicon substrates by ultrasonic-assisted spray pyrolysis deposition(SPD). Structural and optical properties of the ZnO nanostructures grown by varying the growth parameters, such as substrate temperature, source concentration, and suction rate of the mist in the chambers, were investigated using field-emission scanning electron microscopy, X-ray diffraction, and photoluminescence spectrum analysis. Structural investigations of the ZnO nanostructures showed abnormal evolution of the morphologies with variation of the substrate temperatures. The shape of the ZnO nanostructures transformed from nanoplate, nanorod, nanopencil, and nanoprism shapes with increasing of the substrate temperature from 250 to $450^{\circ}C$; these shapes were significantly different from those seen for the conventional growth mechanisms in SPD. The observed growth behavior showed that a Leidenfrost effect dominantly affected the growth mechanism of the ZnO nanostructures.
한인섭,박일규,Han, In Sub,Park, Il-Kyu 한국재료학회 2018 한국재료학회지 Vol.28 No.9
Copper oxide thin films are deposited using an ultrasonic-assisted spray pyrolysis deposition (SPD) system. To investigate the effect of substrate temperature and incorporation of a chelating agent on the growth of copper oxide thin films, the structural and optical properites of the copper oxide thin films are analyzed by X-ray diffraction (XRD), field-emssion scanning electron microscopy (FE-SEM), and UV-Vis spectrophotometry. At a temperature of less than $350^{\circ}C$, three-dimensional structures consisting of cube-shaped $Cu_2O$ are formed, while spherical small particles of the CuO phase are formed at a temperature higher than $400^{\circ}C$ due to a Volmer-Weber growth mode on the silicon substrate. As a chelating agent was added to the source solutions, two-dimensional $Cu_2O$ thin films are preferentially deposited at a temperature less than $300^{\circ}C$, and the CuO thin film is formed even at a temperature less than $350^{\circ}C$. Therefore the structure and crystalline phase of the copper oxide is shown to be controllable.