http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
S.M. Kwa,S. Ramesh,L.T. Bang,Y.H. Wong,W.J. Kelvin Chew,C.Y. Tan,J. Purbolaksono,H. Misran,W.D. Teng 한양대학교 세라믹연구소 2015 Journal of Ceramic Processing Research Vol.16 No.2
The sintering of yttria-tetragonal zirconia polycrystals (Y-TZP) is commonly carried at a predefined temperature using a long holding time of 2 hours. This often has resulted in grain coarsening which affects the mechanical properties of the sintered body and low temperature degradation (LTD) behaviour of the ceramic when exposed to moist environment. In this research, the effect of using a short holding time of 1 min. during sintering coupled with small amounts (0.5 and 1 wt%) of manganese oxide, MnO2 as dopant on the mechanical properties and LTD behaviour of 3 mol% Y-TZP were investigated. The results showed that the mechanical properties improved significantly with the addition of 0.5 wt% MnO2 for the 1-min. and 12-min. holding time samples when compared to 2 hours holding time sintered at the same temperature of 1350 ℃. Nevertheless, regardless of the holding time employed, the 1 wt% MnO2 addition was not effective in improving the mechanical properties and ageing resistance of Y-TZP ceramic.
Beam production of <sup>18</sup>Ne with in-flight method for alpha scattering at CRIB
Duy, N.N.,Chae, K.Y.,Cha, S.M.,Yamaguchi, H.,Abe, K.,Bae, S.H.,Binh, D.N.,Choi, S.H.,Hahn, K.I.,Hayakawa, S.,Hong, B.,Iwasa, N.,Kahl, D.,Khiem, L.H.,Kim, A.,Kim, D.H.,Kim, E.J.,Kim, G.W.,Kim, M.J.,Kwa Elsevier 2018 Nuclear Instruments & Methods in Physics Research. Vol.897 No.-
<P><B>Abstract</B></P> <P>We conducted a measurement of <SUP>18</SUP>Ne + α scattering in inverse kinematics, in order to search for experimental evidence of α -cluster structure in <SUP>22</SUP>Mg above the alpha threshold ( <SUB> E thr </SUB> = 8 . 14 MeV ) and determine the astrophysical rates of the <SUP>18</SUP>Ne( α , p)<SUP>21</SUP>Na reaction under the conditions of break-out from the Hot-CNO cycle. A high intensity <SUP>18</SUP>Ne beam at 2.54 AMeV was successfully produced at CRIB (CNS Radioactive Ion Beam separator) of the Center for Nuclear Study, the University of Tokyo. This paper presents the in-flight production of the radioactive <SUP>18</SUP>Ne beam by using the production reaction <SUP>3</SUP>He(<SUP>16</SUP>O, <SUP>18</SUP>Ne)n with a windowed cryogenic gas target, which was employed in the mentioned resonant α -scattering experiment.</P>