共搜索到5741条信息,每页显示10条信息,共575页。用时:0小时0分0秒501毫秒
by Xray diffraction(XRD),transmission electron microscopy(TEM) and physical property measurement system(PPMS).In both cases,Ni0.5Zn0.5Fe2O4 nanoparticles of 11 nm in mean particle size were well dispersed in silica matrix.The coercivity and the blocking temperature of Ni0.5Zn0.5Fe2O4 nanoparticles modified with the silicon coupling agent show little decrease,whereas the saturation magnetization......
particles in nickel-silicon carbide composite coatings was investigated. It was found that particle size affects the nucleation overpotential, with 40 nm silicon carbide nanoparticles more effective... CTAB when the electrodepositions were carried out. This indicates a greater co-deposition of silicon carbide nanoparticles in the electrolyte containing CTAB. This can be attributed to a more......
PREPARATION AND CHARACTERIZATION OF POLY-CRYSTALLINE SILICON THIN FILM H.Shen1,Z.Y.Liu2,Y.F.Hu2,L.S.Wen2 (1.Guangzhou Institute of Energy Conversion, The Chinese Academy of Sciences, Guangzhou 510070, China;2.College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China) Abstract:Poly-crystalline silicon thin film has big potential of reducing the cost......
Article ID: 1003-6326(2005)03-0510-05 Preparation and properties of continuous Al-containing silicon carbide fibers YU Yu-xi(余煜玺), LI Xiao-dong(李效东), CAO Feng(曹 峰), WANG Ying-de(王应德... resistance than the Tyranno SA fibers. Key words: continuous silicon carbide fibers; polyaluminocarbosilane; polymer pyrolysis CLC number: TQ343.6  ......
Novel Terbium Chelate Doped Fluorescent Silica Nanoparticles Meng Jianxin1,Liu Yingliang1,Man Shiqing1,Wang Haiming1,Ning Qiaoyu1 (1.Institute of Nano-Chemistry, Department of Chemistry, Jinan University, Guangzhou 510632, China) Abstract:Novel terbium chelate doped silica fluorescent nanoparticles were prepared and characterized.The preparation was carried out in water-in-oil (W/O......
Preparation and dielectric properties of porous silicon nitride ceramics LI Jun-qi(李军奇), LUO Fa(罗 发), ZHU Dong-mei(朱冬梅), ZHOU Wan-cheng(周万城) State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China Received 10 April 2006; accepted 25 April 2006 Abstract: Porous silicon nitride ceramics with difference volume fractions......
Electrochemical behavior and polishing properties of silicon wafer in alkaline slurry with abrasive CeO2 SONG Xiao-lan(宋晓岚)1, XU Da-yu(徐大余)1, ZHANG Xiao-wei(张晓伟)1, SHI Xun-da(史训达)2, JIANG Nan(江 楠)1, QIU Guan-zhou(邱冠周)1 1. Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China; 2. Silicon Wafer Manufacture......
Photoluminescence and Electroluminescence Studies on Tb-Doped Silicon Rich Oxide Materials and Devices Wei Gao1,Yoshi Ono1,Sheng-Teng Hsu1,Ting-kai Li1 (1.Sharp Labs of America, 5750 N.W. Pacific Rim Blvd., Camas, Washington, 98607, USA) Abstract:Photoluminescence (PL) characteristics of Tb-doped silicon rich oxide (SRO) films prepared by DC-sputtering and post-annealing processes were studied......
Effects of light-mass structural forms on silicon carbide mirror HAN Jie-cai(韩杰才), HAN Yuan-yuan(韩媛媛), ZHANG Yu-min(张宇民), ZHANG Jian-han(张剑寒), YAO Wang(姚 旺), ZHOU Yu-feng(周玉锋) Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China Received 15 July 2007; accepted 10 September 2007 Abstract: To reduce the mass of the mirror, silicon carbide was used......
-oxide and silicon-oxide nanoparticles were used by means of suspension in the cutting fluid. The mechanical properties of the nanoparticle employed in this work are shown in Table 2. In order to produce... the copper-oxide and silicon-oxide nanoparticles, as well as surfactant used in this study. Table 1 Specifications of A286 superalloy Table 2 Mechanical properties of nanoparticles used Figure 1......