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Ti,Nb对超低碳Cr18铁素体不锈钢冷轧板再结晶织构的影响孙丹1,陈伟庆1,郑宏光2(1.北京市北京科技大学 冶金与生态工程学院2.宝钢股份不锈钢技术中心,上海 200431)摘 要:研究了添加Ti,Nb对超低碳Cr18铁素体不锈钢冷轧板再结晶织构的影响.试验结果表明,Nb单稳定化和Ti,Nb双稳定化的冷轧板试样在850℃下,随退火保温时间的延长,{111}面织构取向密度增加,而Ti单稳定的冷轧板在退火2min时{111}面织构取向密度值达到最大,然后随保温时间延长{111}面织构密度下降.Ti,Nb双稳定化......
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; FactSage software 1 Introduction Niobium is a V sub-group element in periodic table with similarity to tantalum in physical and chemical properties. The largest application of the two metals......
rate and 105mA·h/g at 4C rate. Key words: lithium iron phosphate; lithium ion batteries; cathode materials; solid-state synthesis; niobium doping 橄榄石型磷酸铁锂(LiFePO4)具有170mA·h/g的理论容量和......
filament chemical vapor deposition (HFCVD); boron doping; electrochemical behavior; niobium substrate; electrode 1 Introduction Diamond possesses many unique physical and chemical properties... for the preparation of large-area electrodes. Among these mental materials, niobium is the most favorable because of its excellent resistance performance to acid, alkali and corrosion, which can withstand......
) was leached with the mixture of HF and H2SO4, HF and HNO3 acids, respectively. Optimal conditions ensuring high recovery of tantalum and niobium (up to 99%) into solution, and radionuclides into insoluble residue were determined. Fluoride-sulfuric acid and fluoride-nitric acid schemes were proposed for PMC leaching by an extractive separation of tantalum form niobium, lead and impurities, and production......
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电感耦合等离子体质谱法测定钕铁硼中铝,钴,铜,镓,锆,铽,钛,铌张立锋1,2,张翼明1,周凯红2(1.内蒙古自治区包头市包头稀土研究院2.内蒙古自治区包头市稀土冶金及功能材料国家工程研究中心)摘 要:建立了电感耦和等离子体质谱法测定钕铁硼中微量元素的方法.通过实验选择了测定质量数,测定Nb,Zr时,选择了氢氟酸加入量,并进行了测定酸度和基体效应实验.考察了以Rh,In,Cs和Tl为内标元素对仪器信号漂移和基体效应的校正,根据实验结果选择Cs为最佳校正内标.各元素测定下限为0.095~0.56 ng/mL,回收率......
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: A Preparation of niobium by direct electrochemical reduction of solid Nb2O5 DENG Li-qin, XU Qian, LI Bing, ZHAI Yu-chun, HUANG Zhen-qi (School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract: The method of electro-deoxidation was used to reduce solid Nb2O5 to niobium in a CaCl2-NaCl melt at 800℃. The sintered Nb2O5 pellets acted as the cathode, while graphite......
