共搜索到658条信息,每页显示10条信息,共66页。用时:0小时0分0秒640毫秒
Synthesis and characterization of tantalum nitride nanopowder prepared through homogeneous reaction MA Chun-hong(马春红)1, 2, ZHANG Wei-feng(张威峰)1, HE Ji-lin(何季麟)2, ZHU Hong-min(朱鸿民)1 1. School...]. Engineering Science China, 2001, 3(12): 85-89. (in Chinese) [7] Shekhter L, Lanin L, Tripp T, Goldberg H. A new process for the reduction of tantalum and niobium powder from oxide[C]//Int Symposium on Ta......
J. Cent. South Univ. Technol. (2011) 18: 73-77 DOI: 10.1007/s11771-011-0661-2 Electrochemical synthesis, characterization and thermal properties of niobium ethoxide CAI Ya-nan(蔡亚楠)1, YANG Sheng...; 2. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: Niobium(V......
Synthesis of ZnO:Dy Nanopowder and Photoluminescence of Dy3+ in ZnO Hu Juntao1,Guo Changxin1,Zhao Junjing1,Zhang Linli1 (1.Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China;2.Department of Physics, University of Science and Technology of China, Hefei 230026, China) Abstract:A type of dysprosium-doped ZnO (ZnO:Dy) nanopowder was synthesized......
by the CVS process under n(NbCl5):n(H2):n(Ar)=1:120:1 and 950 °C with the NbCl5 reduction rate of 96.1%. Key words: NbCl5-H2-Ar system; chemical vapor synthesis (CVS); thermodynamic; niobium nanopowder...Trans. Nonferrous Met. Soc. China 24(2014) 3987-3993 Thermodynamics for chemical vapor synthesis of Nb nanopowder in NbCl5-H2-Ar system Jun ZHU, Kai HUANG, Jun-gang HOU, Hong-min ZHU Beijing Key......
Preparation and densification of BaTiO3 nanopowder by sol-gel autoigniting synthesisFangren Hu Lin Li Dongning Zheng, and Changchun Ge1) Institute of Physics, Chinese Academy of Sciences, Beijing... synthesis of gel from Ba(NO3)2, TiO(NO3)2 and C6H8O7·H2O aqueous solution was investigated at an initial temperature of 600℃ and tetragonal BaTiO3 nanopowder with particle size of 80nm was prepared......
......
......
STRUCTURE IMPROVEMENT AND TEMPERATURE FIELD SIMULATION OF PREPARING NANOPOWDER BY EVAPORATION-CONDENSATION METHOD J.S.Bao1,T.G.Liu1,Y.Yin1,Z.Y.Yang1 (1.School of Mechanical and Electrical... the evaporation-condensation method to prepare carbon-coated nanopowder, has been developed by the authors. Numerical simulation of the temperaturc field is done by the ANSYS software, and temperature......
Rare Earths, Niobium and Tantalum Minerals in Bayan Obo Ore Deposit and Discussion on Their Genesis 张培善1,宋仁奎1,陶克捷1,杨学明1,杨主明1 (1.Institute of Geology and Geophysics, Chinese Academy of Sciences.... It is obviously that some minerals are strata minerals and some are post-strata minerals. The rare earths, niobium and tantalum minerals are exactly the post-strata minerals. In these minerals......
Static oxidation behaviour of silicide coating on niobium alloy at high temperature XIAO Lai-rong(肖来荣)1, 2, XU Liang-liang(许谅亮)1, 2, YI Dan-qing(易丹青)1, 2, LIU Hui-qun(刘会群)1, 2, CAI Zhi-gang(蔡志刚... coating is parabolic. The diffusion of Si leads to the phase transformation and evolution during the oxidation. Key words: niobium alloy; silicide coating; static oxidation; diffusion; phase......