자료유형
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- 한국결정성장학회지(6)
- 요업학회지(5)
- 전기전자재료학회지= THE JOURNAL OF THE KOREAN INSTITUTE OF ELECTRICAL AND ELECTRONIC MATERIAL ENGINEERS(5)
- 전기학회논문지. THE TRANSACTIONS OF THE KOREAN INSTITUTE OF ELECTRICAL ENGINEERS. C/ C, 전기물성-응용부문(4)
- 전기학회논문지= THE TRANSACTIONS OF THE KOREAN INSTITUTE OF ELECTRICAL ENGINEERS(4)
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- 대한기계학회론문집. TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS. A. A(1)
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전체 선택해제
총 164건 검색
본문검색 결과만 보기
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Co-doped MgGa2O4 결정 성장과 광학적 특성
강종욱, 방태환 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 8 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2018, 제 8권 제 6호 50 537-544 (8 pages)
Co-doped MgGa2O4 결정은 solid-state sintering 방법으로 성장하였다. Co-doped MgGa2O4 결정을 성장하기 위해서 고순도의 MgO와 Ga2O3 분말를 사용하였으며, 불순물로 첨가한 Co는 1mol%가 되도록 하였다. 상온에서 1500℃까지 승온 영역을 갖는 고온 전기로를 이용하여 1350℃ 온도에서 Co-doped MgGa2O4 결정을 성장하였다. EDS(Energy Dispersive Spectrometer)와 XRD(X-ray diffraction) 측정을 통해서 Co-doped MgGa2O4 결정의 구조와 조성을 분석하였다. XRD 분석으로부터 성장된 Co-doped MgGa2O4 결정의 구조는 cubic... -
Hot Isostatic Pressing 기술을 이용한 유해폐기물 안정화기술 고찰
이동대, 손인철 한국열환경공학회 한국열환경공학회 학술대회지 3 Pages
한국열환경공학회 한국열환경공학회 학술대회지 2017년 춘계 41 253-255 (3 pages)
HIP 기술은 금속·세라믹 재료의 기공을 제거하고 밀도를 높여 기계적인 특성과 적용 성을 개선시키는 공정이다. Fig. 1의 왼쪽 그림에서 보듯이 압력용기에 불활성가스(알곤 등)를 충진하고 고온고압의 환경을 조성하여 모든 방향에서 균일하게 압력과 온도가 작용하는 기술이다. 불활성가스를 사용하므로 내용물은 화학적으로 반응하지 않게되는 특징이 있다. HIP 기술의 기본 파라미터는 온도, 압력, 시간, 처리가스의 종류 등이 해 당된다. -
SiC 전환 카본 제거공정에 대한 CFD 해석
Poudel Jeeban, 임대원, 권우택, 오세천 한국열환경공학회 열환경공학 8 Pages
한국열환경공학회 열환경공학 2014, 제 11권 1호 6 42-49 (8 pages)
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Effect of added mesophase pitch during the pitch synthesis reaction of PFO
Ji Hong Kim, Jong Gu Kim, Chul Wee Lee, Ki Bong Lee, Ji Sun Im 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 7 48-54 (7 pages)
This research considers the effect of added mesophase pitch (MP) as an additive during the pitch synthesis reaction of pyrolyzed fuel oil (PFO). Two effects are generated by adding MP. One is an enhancement of thermal stability due to the high thermal property of the additive; the other is that the volatile compounds that were removed by vaporization of PFO during the thermal reaction can participate in the pitch synthesis reaction (PFO→pitch) more efficiently. The effect differs according to... -
Formation of nanojoints between carbon nanotubes and copper nanoparticles
Jagjiwan Mittal, Kwang Lung Lin 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 11 86-92 (7 pages)
Exceptional properties and a one dimensional structure make carbon nanotubes (CNTs) a promising candidate for future applications in the electronic industry [1-3]. Because of their smaller dimensions and higher conductivity as compared to copper, multi-walled carbon nanotubes (MWCNT) may increase the bandwidth density of global interconnects [4]. They demonstrate charge carrier mean free paths between 500 nm and 10 μm as compared to 40 nm in metals. CNTs can carry exceptionally high current... -
Synthesize multi-walled carbon nanotubes via catalytic chemical vapour deposition method on Fe-Ni bimetallic catalyst supported on kaolin
Aliyu A, Abdulkareem AS, Kovo AS, Abubakre OK, Tijani JO, Kariim I 한국탄소학회 Carbon Letters 18 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 5 33-50 (18 pages)
In this study, Fe-Ni bimetallic catalyst supported on kaolin is prepared by a wet impregnation method. The effects of mass of kaolin support, pre-calcination time, pre-calcination temperature and stirring speed on catalyst yields are examined. Then, the optimal supported Fe-Ni catalyst is utilised to produce multi-walled carbon nanotubes (MWCNTs) using catalytic chemical vapour deposition (CCVD) method. The catalysts and MWCNTs prepared using the optimal conditions are characterized using high... -
Electrochemical synthesis of nanosized hydroxyapatite/graphene composite powder
Vesna Mi?kovi?-Stankovi?, Sanja Erakovi?, Ana Jankovi?, Maja Vuka?inovi?-Sekuli?, Miodrag Mitri?, Young Chan Jung, Soo Jin Park, Kyong 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.4 2 233-240 (8 pages)
Electrochemical synthesis was employed to prepare a novel hydroxyapatite/graphene (HAP/ Gr) composite powder suitable for medical applications as a hard tissue implant (scaffold). The synthesis was performed in a homogeneous dispersion containing Na2H2EDTA·2H2O, NaH2PO4 and CaCl2 with a Ca/EDTA/PO4 3? concentration ratio of 0.25/0.25/0.15M, along with 0.01 wt% added graphene nanosheets, at a current density of 137 mA cm?2 and pH value of 9.0. The field emission scanning electron microscopy and... -
Overlook of carbonaceous adsorbents and processing methods for elemental mercury removal
Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 2 238-246 (9 pages)
People have been concerned about mercury emissions for decades because of the extreme toxicity, persistence, and bioaccumulation of methyl Hg transformed from emitted Hg. This paper presents an overview of research related to mercury control technology and identifies areas requiring additional research and development. It critically reviews measured mercury emissions progress in the development of promising control technologies. This review provides useful information to scientists and engineers... -
Method and mechanism of dispersing agent free dispersion of short carbon fibers in silicon carbide powder
Thakur Sudesh Kumar Raunija, Mariamma Mathew, Sharad Chandra Sharma 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 4 180-186 (7 pages)
This study highlights a novel method and mechanism for the rapid and effective milling of carbon fibers (CFs) in silicon carbide (SiC) powder, and also the dispersion of CFs in SiC powder. The composite powders were prepared by chopping and exfoliation of CFs, and ball milling of CFs and SiC powder in isopropyl alcohol. A wide range of CFs loading, from 10 to 50 vol%, was studied. The milling of CFs and SiC powder was checked by measuring the average particle size of the composite powders. The...
