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New Developments of Tungsten Technology in ChinaZuo Tieyong Zhao Qinsheng Li Songren Wang Jiuru Central South University of Technology,Changsha,China摘 要:<正> I.IntroductionIt is well known that China is rich in natural resources of tungsten.Before 1949 there was al-most no tungsten industry in our country except mining and ore dressing.Tremendous......
Fine grain tungsten produced with nanoscale powderTao Lin, Fang Zhao, Liying Zhang, Chengyi Wu, and Zhimeng Guo Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China摘 要:<正>Nanoscale tungsten powder was prepared by reducing nanoscale tungsten trioxide in hydrogen to WO2.90 and further to W......
Characterization of nanometer tungsten powdersLI Huiqian LIN Tao SHAO Huiping WU Chengyi GUO Zhimeng LUO Ji School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China摘 要:<正>Three types of tungsten powders were prepared by hydrogen reduction of three precursor powders at low temperature,which were......
Preparation of lead sulfate powder directly from galena concentrates QIN Wen-qing(覃文庆), LIU Hui(刘 辉), TANG Shuang-hua(唐双华), SUN Wei(孙 伟) School of Resources Processing... concentrates in the ferric chloride media, selective purification and chemical sedimentation, PbS concentrate can be converted into PbSO4. The conversion recovery is 97.39%, the purity of PbSO4 powder......
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Scandia doped tungsten matrix for impregnated cathodeWANG Jinshu,WANG Yanchun,LIU Wei,LI Hongyi,and ZHOU Meiling School of Materials Science and Engineering,Beijing University of Technology,Beijing 100022,China摘 要:As a matrix for Sc-type impregnated cathode,scandia doped tungsten with a uniform distribution of Sc2O3 was obtained by powder metallurgy......
Effects of Rare Earth and Alkaline Earth on Spheroidizing of Eutectic Carbides in Low Tungsten White Cast Iron Fu Hanguang1,Zou Dening2 (1.Department of Mechanical Engineering, Tsinghua University, Beijing 100084 , China;2.School of Metallurgical Engineering, Xi'an University of Architecture &Technology, Xi'an 710055, China) Abstract:Tungsten Alloy White Cast Iron(TAWCI) has great brittleness......
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, 1952, 37(9/10): 719-735. [4] 吕 莹, 李洪桂. 合理利用我国高钼钨精矿[J]. 中国钨业, 2005, 20(5): 15-16. Ying, LI Hong-gui. Utilizing tungsten concentrates of high molybdenum rationally[J]. China Tungsten Industry, 2005, 20...; 文献标志码:A Enlightenment of geochemistry on separation of molybdenum and tungsten ZHAO Zhong-wei, HE Li-hua (School of Metallurgy and Environment, Central South......