NIOBIUM

作品数：281被引量：577H指数：10
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  • 期刊=Journal of Central South Universityx
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Effects of niobium addition on microstructure and properties of CPM121 powder metallurgy high-speed steel被引量：2
《Journal of Central South University》2021年第4期1206-1218,共13页ZHANG Qian-kun LI Su-wang XIAO Yi-feng WU Liang QIAN Jin-wen CHEN Ze-min SHEN Wei-jun LIN Nan HE Yue-hui 
Projects(51771237,51704257)supported by the National Natural Science Foundation of China;Project(2019JJ60019)supported by the Joint Fund of Hunan Province,China;Project(17QDZ25)supported by the School Level Fund of Xiangtan University,China。
Massive vanadium additions as hard phases in powder metallurgy high-speed steels(PM HSS)lead to higher cost and bad machinability.In this study,ultrahigh alloy PM HSS with CPM121(10W-5Mo-4Cr-10V-9Co,wt.%)as the basic ...
关键词：CPM121 niobium-alloying microstructure mechanical properties temper resistance wear resistance rotary forging powder metallurgy 
Separation and purification of tantalum from plumbomicrolite of amazonite deposit in Kola Peninsula by acid leaching and solvent extraction被引量：5
《Journal of Central South University》2021年第1期72-88,共17页S M MASLOBOEVA L G ARUTYUNYAN M N PALATNIKOV D V MANUKOVSKAYA 
Project supported by the Federal Research Centre of Kola Science Centre of the Russian Academy of Sciences,Russian。
A plumbomicrolite concentrate(PMC)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...
关键词：mineral plumbomicrolite TANTALUM NIOBIUM acid leaching RADIOACTIVITY solvent extraction 
Electrochemical synthesis, characterization and thermal properties of niobium ethoxide被引量：1
《Journal of Central South University》2011年第1期73-77,共5页蔡亚楠 杨声海 金胜明 杨海平 侯国锋 夏姣云 
Project(2007AA03Z425) supported by the National Hi-tech Research and Development Program of China;Project(50404011) supported by the National Natural Science Foundation of China
Niobium(V) ethoxide(Nb(OEt)5) was synthesized by electrochemical reaction of ethanol with niobium plate as the sacrificial anode,stainless steel as the cathode and tetraethylammonium chloride(TEAC) as the conductive a...
关键词：electrochemical synthesis niobium ethoxide CHARACTERIZATION thermal analysis 
Study on Solubility of Nb_2O_5 in KOH Solution and Alkali Leaching of Niobite被引量：2
《Journal of Central South University》2000年第4期171-174,共4页ZHOU Kang gen 1,TOKUDA Masanori 2 (1.Metallurgical Separation Science and Engineering Lab., Central South University, Changsha 410083, China 2.Tohoku University, Sendai 980 77, Japan) 
TheKeyProjectofScienceandTechnologyAgencyofJapan 1994
Solubility of Nb 2O 5 and leaching behaviors of Nb and Ta from niobite in KOH solution have been investigated in order to develop an alkali hydrothermal leaching process of Nb and Ta. The solubility of Nb 2O 5 was mea...
关键词：NIOBIUM SOLUBILITY ALKALI LEACHING 
Solvent Extraction of Niobium from Alkali Solution by Methyltrioctylammonium Chloride
《Journal of Central South University》2000年第4期175-177,共3页ZHOU Kang-gen TOKUDA Masanori 
TheKeyProjectofScienceandTechnologyAgencyofJapan 1994
For the purpose of developing an alkali leaching solvent extraction directly from alkali solution process, the extraction of niobium from alkali solution by long chain alkyl quaternary ammonium salt (methyltrioctylamm...
关键词：NIOBIUM SOLVENT EXTRACTION distribution RATIO methyltrioctylammonium CHLORIDE 
MIBK Removal from Aqueous Solution by Aeration method被引量：2
《Journal of Central South University》2000年第4期182-185,共4页LI Qing-gang ZHOU Kang-gen ZHANG Qi-xiu 
In order to develop an effective MIBK removal method of H 2TaF 7 solution in tantalum extraction process, MIBK removal from aqueous solution by the aeration method was investigated by using an aeration column with the...
关键词：TANTALUM NIOBIUM MIBK removal aeration method 
EXAMINATION OF CARBON DIFFUSION IN NIOBIUM CLAD STEEL COMPOSITE
《Journal of Central South University》1999年第1期2-4,共3页Xia Changqing Jin Zhanpeng (Department of Materials Science and Engineering, Central South University of Technology, Changsha 410083, China) 
Ｔｈｅｎｉｏｂｉｕｍｃｌａｄｓｔｅｅｌｃｏｍｐｏｓｉｔｅｉｓａｃｌａｄｓｔｅｅｌｐｌａｔｅ，ｉｎｗｈｉｃｈｔｈｅｂａｓｅｍｅｔａｌｉｓｓｔｅｅｌｗｉｔｈ０．２０％ｃａｒｂｏｎａｎｄｔｈｅｃｌａｄｄｉｎｇｍｅｔａｌｉ...
关键词：Nb 2C phase CARBON activity STATIONARY DIFFUSION 
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