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电容器用钽铌粉的研究进展 王峰1,王东辉1,郑欣1,李中奎1,夏明星1 (1.西北有色金属研究院新材料所,西安,710016) 摘要:概括介绍了电容器用钽铌粉的研究进展,介绍了钽粉的3种钠还原制备方法的化学反应机理并进行了比较,同时还介绍了铌粉的制备方法,包括铝热还原法,电解还原法,蒸气还原法,钠还原法和金属热还原法;阐述了钽铌粉中杂质的测定方法以及有关钽铌粉的其它研究进展. 关键词:钽粉; 铌粉; 钠还原法; 杂质; 电容器; tantalum powder; niobium powder; Na-reduced methods; impurity; condensers; [全文内容正在添加中] ......
by the WC-5Co-2Cr3C2 cermet. Key words: spark plasma sintering; cermet; chromium carbide; tantalum carbide; mechanical properties 1 Introduction Several studies [1-3] have concentrated on the relationship between......
电感耦合等离子体原子发射光谱法测定钽中微量铌的多元光谱拟合干扰校正方法研究徐娟1,郑诗礼2,郭奋1,王晓辉1,张懿2(1.北京市北京化工大学化学工程学院2.中国科学院 过程工程研究所,北京 100190)摘 要:钽样品经氢氟酸消解后,未经基体分离,直接以多元光谱拟合等离子体原子发射光谱法测定消解液中微量铌杂质元素.Nb 269.706 nm分析谱线仅受到Ta基体的部分重叠光谱干扰,扫描光谱图较为简单;Nb 292.781 nm,Nb 309.418 nm和313.079 nm分析谱线均受到OH带和Ta基体的光谱......
Electrochemical behaviors of tantalum in anhydrous ethanol containing hydrogen sulfate ions YANG Hai-ping1, YANG Sheng-hai1, CAI Ya-nan2, HOU Guo-feng1, XIA Jiao-yun1, TANG Mo-tang1 1. School... are presented when the potential is higher than 2.0 V. Key words: anhydrous ethanol; electrochemical impedance spectra; polarization curve; tantalum; tetrabutylammonium hydrogen sulfate 1 Introduction Tantalum......
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hardening rate and microstructure of tantalum ZHANG Xing-jian, JIANG Guo-sheng, WANG Zhi-fa (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The work hardening rate of pure tantalum was studied by tension test, optical microscope and TEM. The results show that the work hardening rate of pure tantalum is low. TEM analysis indicates......
of interface reactions during plasma nitriding of tantalum Abstract: The reaction process on the surface of solid gases during nitriding of tantalum was discussed thermodynamically... on tantalum surfaces with high hardness and better roughness were obtained with the help of plasma at low temperature. The layers were composed of the solid solution of tantalum and surface layers, which......
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)06-1224-05 Viscosity and curing characteristics of furan resin containing tantalum LI Jiang-hong, ZHANG Hong-bo, XIONG Xiang, XIAO Peng, HUANG Bai-yun (State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China) Abstract: The viscosity and curing characteristics of furan-resin containing tantalum were investigated based on the viscosity experiments, DSC and FT......
