共搜索到2455条信息，每页显示10条信息，共246页。用时：0小时0分0秒435毫秒
="ChDivSummary">In this study, near fully dense(96.5%) pure tungsten bulks were additively manufactured and the cracking behavior was investigated. A crack network with a spacing of ~100 lm was observed... temperature difference(7300 K) was much higher than the cracking criterion(800 K) of tungsten,indicating that cracking is almost inevitable in laser additive manufacturing of tungsten. It could be concluded......
successfully applied in Xiamen Tungsten Co. Ltd., recently [3,4]. The impure sodium tungstate solution was obtained by decomposing tungsten concentrates, and then the ammonium tungstate solution was prepared... extractive technology for tungsten metallurgy [8,9], in which ammonium tungstate solution was directly prepared by roasting tungsten concentrates followed by leaching the roasted product with aqueous......
Electrocatalytic Activity of Tungsten Trioxide Microspheres, Tungsten Carbide Microspheres and Multi-walled Carbon Nanotube-tungsten Carbide Composites陆洪智Faculty of Engineering, China University of Geosciences摘 要:Tungsten trioxide micropheres were prepared by spray pyrolysis, and tungsten carbide microspheres were produced by spray pyrolysis-low......
......
......
adsorption [J]. Rare Metals and Cemented Carbides, 2005, 33(3): 1-3. (in Chinese) [11] L? Ying, LI Hong-gui. Utilize tungsten concentrates of high molybdenum rationally [J]. China Tungsten Industry, 2005, 20... Separation of macro amounts of tungsten and molybdenum by precipitation with ferrous salt ZHAO Zhong-wei1, 2, CAO Cai-fang1, CHEN Xing-yu2 1. School of Metallurgical Science and Engineering, Central......
Effects of Tungsten and Boron Contents on Crystallization Temperature and Microhardness of Tungsten Based Metallic GlassesPelin ztürk,Aytekin Hitit摘 要:Effects of tungsten and boron contents on the thermal properties and microhardness of W–Fe–B metallic glass system were studied. Thin foils, with thicknesses of 20 and 100 lm, of the alloys were produced......
Effect of reverse flotation on magnetic separation concentratesS.O. Bada1,2,A.S. Afolabi3,M.J. Makhula1,21. School of Chemical & Metallurgical Engineering, University of the Witwatersrand, P/Bag X3, Wits 2050 Johannesburg, South Africa3. Department of Civil and Chemical Engineering, College of Scien......
Extraction of metals from complex sulfide nickel concentrates by low-temperature chlorination roasting and water leachingCong Xu,Hong-wei Cheng,Guang-shi Li,Chang-yuan Lu,Xiong-gang Lu,Xing-li Zou... from complex sulfide concentrates was investigated via chlorination roasting followed by water leaching. A reaction process is proposed on the basis of previous studies and the results of our preliminary......
Influence of Nano-Al Concentrates on the Corrosion Resistance of Epoxy CoatingsYongchun Liang1,Fu-Chun Liu2,Ming Nie1,Shuyan Zhao2,Jiedong Lin1,En-Hou Han21. The Electric Power Research Institute...;A two-stage process was used to produce nano-composite epoxy coatings.The first step involved preparing nano-AI concentrates with high concentration and low viscosity,and the second step produced......
