http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이축정렬된 Ni 금속모재에 RF 마그네트론 스퍼터링에 의해 증착된 $CeO_2$ 및 $Y_2O_3$ 완충층 박막 특성
오용준,라정석,이의길,김찬중,Oh, Y.J.,Ra, J.S.,Lee, E.G.,Kim, C.J. 한국초전도학회 2006 Progress in superconductivity Vol.7 No.2
We comparatively studied the epitaxial growth conditions of $CeO_2$ and $Y_2O_3$ thin buffers on textured Ni tapes using rf magnetron sputtering and investigated the feasibility of getting a single mixture layer or sequential layers of $CeO_2$ and $Y_2O_3$ for more simplified buffer architecture. All the buffer layers were first deposited using the reducing gas of $Ar/4%H_2$ and subsequently the reactive gas mixture of Ar and $O_2$, The crystalline quality and biaxial alignment of the films were investigated using X-ray diffraction techniques (${\Theta}-2{\Theta},\;{\phi}\;and\;{\omega}\;scans$, pole figures). The $CeO_2$ single layer exhibited well developed (200) epitaxial growth at the condition of $10%\;O_2$ below an $450^{\circ}C$, but the epitaxial property was decreased with increasing the layer thickness. $Y_2O_3$ seldom showed optimum condition for (400) epitaxial growth. The sequential architecture of $CeO_2/Y_2O_3/CeO_2$ having good epitaxial property was achieved by sputtering at a temperature of $700^{\circ}C$ on the initial $CeO_2$ bottom layer sputtered at $400^{\circ}C$. Cracking of the sputtered buffer layers was seldom observed except the double layer structure of $CeO_2/Y_2O_3$.
도현철(H. C. DO),정석호(S. H. Jung),라진흥(J. H. Rha),고대권(D. K. Koh),안수길(S. K. Ahn) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
It is necessary to develop both high efficiency diesel engine and alternative fuel by a sudden rise of fuel price. And engine and fuel must be environmental friendship. Though BDF(Bio Diesel Fuel) is alternative fuel, the characteristics of it's exhaust is uncertain. To investigate the exhaust characteristics of BDF we made a measuring devise of soot concentration and compared the exhaust characteristics of both BDF and DF(diesel fuel). As a result, NOx was no influence for test fuel but BDF was less than DF for soot.