http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
X.M. Chen,Y. Zhang,W.W. Kong,X.B. Bian,J.P. Zhou,P. Liu 한양대학교 세라믹연구소 2010 Journal of Ceramic Processing Research Vol.11 No.4
Barium titanate (BaTiO3, or BT) powders were synthesized via a solid state reaction of BaCO3-TiO2 by combining a highenergy ball milling (HBM) technique and a calcination method. Using X-ray diffraction (XRD) methods with a Rietveld refinement, the effects of calcination temperature on the phase formation and crystallite structure of BT powders were studied. It is found that by means of HBM the synthesis temperature for obtaining BT single phase is decreased to 960 oC, which is much lower than that required by the conventional solid-state reaction process, and the crystallite structure of BT is in the (pseudo)cubic form. As the calcination temperature is increased to 980 oC, the structure of BT crystallites transforms from the (pseudo)cubic to the tetragonal form. With an increase in the calcination temperature, both the tetragonality (c/a-1) and crystallite size are increased.
Variation of magnetic properties with different annealed temperatures in the Ni_3[Fe(CN)_6]_2ㆍXH_2O
M. Liu,X.F. Bian,Y.F. Xia,Z. Bao,H.S. Wu,M.X. Xu 한국물리학회 2011 Current Applied Physics Vol.11 No.3
Molecular magnet nickel(II) hexacyanoferrate(III) powder Ni_3[Fe(CN)_6]_2ㆍXH_2O was prepared by coprecipitation method. The coprecipitated powder was annealed in vacuum at different temperatures of 140,and 160 ℃. Water molecules contained in Prussian blue analogues were removed by heating. The annealing of Ni^II ferricyanide induced an inner charge transfer from Ni^II towards Fe^III to form the mixed valence system Ni(II) Ni(III) ferri-ferro-cyanide. Variation of magnetic properties with different annealed temperatures was studied by elemental analysis, powder X-ray diffraction, transmission electron microscopy, Fourier transform infrared, and Mössbauer and magnetization measurements. The differences in magnetic phase transition temperature, coercivity, remanence and effective magnetization are studied. Differences in magnetic properties may be attributed to a partial charge transfer from Ni^II to Fe^III.
Liu, Y.,Bian, X.,Zhang, K.,Yang, C.,Feng, L.,Kim, H.S.,Guo, J. BUTTERWORTH - HEINEMANN 2014 MATERIALS AND DESIGN Vol.64 No.-
A new composite processing technology characterized by hot-dip Zn-Al alloy process was developed to achieve a sound metallurgical bonding between Al-7wt% Si alloy (or pure Al) castings and low-carbon steel inserts, and the variations of microstructure and property of the bonding zone were investigated under high-pressure torsion (HPT). During hot-dipping in a Zn-2.2wt% Al alloy bath, a thick Al<SUB>5</SUB>Fe<SUB>2</SUB>Zn<SUB>x</SUB> phase layer was formed on the steel surface and retarded the formation of Fe-Zn compound layers, resulting in the formation of a dispersed Al<SUB>3</SUB>FeZn<SUB>x</SUB> phase in zinc coating. During the composite casting process, complex interface reactions were observed for the Al-Fe-Si-Zn (or Al-Fe-Zn) phases formation in the interfacial bonding zone of Al-Si alloy (or Al)/galvanized steel reaction couple. In addition, the results show that the HPT process generates a number of cracks in the Al-Fe phase layers (consisting of Al<SUB>5</SUB>Fe<SUB>2</SUB> and Al<SUB>3</SUB>Fe phases) of the Al/aluminized steel interface. Unexpectedly, the Al/galvanized steel interface zone shows a good plastic property. Beside the Al/galvanized steel interface zone, the microhardnesses of both the interface zone and substrates increased after the HPT process.
Radiative decay of theψ(2S)into two pseudoscalar mesons
Bai, J. Z.,Ban, Y.,Bian, J. G.,Blum, I.,Chen, A. D.,Chen, G. P.,Chen, H. F.,Chen, H. S.,Chen, J.,Chen, J. C.,Chen, X. D.,Chen, Y.,Chen, Y. B.,Cheng, B. S.,Choi, J. B.,Cui, X. Z.,Ding, H. L.,Dong, L. Y American Physical Society 2003 Physical review. D, Particles and fields Vol.67 No.3
Effect of Cd-phosphonate complex on the self-assembly structure of colloidal nanorods
Qiao, F.,Xu, W.,Liu, M.,Yang, J.,Cui, X.,Wang, Q.,Bian, J.,Kim, D.H. North-Holland 2016 Materials letters Vol.180 No.-
A simple approach for finely ordered self-assembling CdSe/CdS nanorods (NRs) on a solid substrate by annealing is introduced. With appropriate Cd-phosphonate complex, NRs align into either parallel arrays or vertical ones depending on the concentration of NRs. The analysis of self-assembled NRs arrays in response to changes in NR concentration showed that the presence of Cd-phosphonate complex does influence the resulting self-assembled nanostructures. The melted Cd-phosphonate complex surrounding NRs during thermal annealing process serves as a media for NRs to self-assemble into an ordered structure. The surface photovoltage (SPV) spectra of vertically aligned NRs shows much stronger response compared to that of parallel aligned ones, which is caused by the direct pathways for charge transport and more effective photo-induced charge transport in the vertically aligned NRs structure. The result suggests that assembly direction and structure of CdSe/CdS NRs can be achieved by selecting the appropriate Cd-phosphonate complex in the synthesis and purification process.