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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......
Ltd, Changsha 410083, China) Abstract: A super-high temperature furnace was developed to fabricate spheroidal cast tungsten carbide powder with excellent flowability and fine feathery structure... over 10.3g/cm3 is obtained. Key words: spheroidal cast tungsten carbide; fine feathery structure; processing parameter; flowability CLC number: TF125.3 Document code: A
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J. Cent. South Univ. (2019) 26: 75-87 DOI: https://doi.org/10.1007/s11771-019-3983-0 Effect of magnetic seeding agglomeration on flotation of fine minerals YUE Tao(岳涛), WU Xi-qing(伍喜庆), DAI Liang(戴... Abstract: Magnetic seeding agglomeration (MSA), i.e., adding magnetic seeds and a low intensity pre-magnetization for fine agglomeration, was applied to the flotation of coal, pyrite and hematite ore......
tungsten powder can be obtained. On the contrary, fine powder appears. In order to obtain coarse- grain tungsten powder, the transition of WO2→W must proceed under relatively high pH2O/pH2 in hydrogen... Crystal growth of tungsten during hydrogen reduction of tungsten oxide at high temperature WU Xiang-wei(吴湘伟)1, 2, LUO Jing-song(罗劲松)2, LU Bi-zhi(陆必治)2, XIE Chen-hui(谢晨辉)2, PI Zhi-ming......
; Abstract: A fine and platelet tungsten carbide patterned structure with fine yttrium containing dispersed phase was observed in liquid phase sintered WC-20%Co-1%Y2O3 cemented carbide with ultrafine... below the eutectic temperature are fine and homogenously distributed. Abnormal grain growth which is a very vexing problem in cemented carbide with ultrafine or nano tungsten carbide as starting......