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On Mechanism of The Effect of Rare Earth on Wearability of Nickel Base Self-Fluxing Alloy Spray-Welding Layers李慕勤,马臣,邵德春,郭面焕摘 要:<正> The mechansim of the effect of rare earth(RE)on wearability of spray-welding layers has been investi-gated by adding RE in ppm into Nickel base self-fluxing alloy powder.The test results show that the microalloy-ing......
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KINETIC MODEL FOR POWDER INJECTION DESULFURIZATION S.R. Yu1,X.G. Bi1,Y. Jin1 (1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China) Abstract:The kinetic model for desulfurization using CaO-based powder injection has been proposed,which accords with the actual process of the experiment......
Leaching of nickel laterite ore assisted by microwave technique ZHAI Xiu-jing(翟秀静), WU Qiang(武 强), FU Yan(符 岩), MA Lin-zhi(马林芝), FAN Chuan-lin(范川林), LI Nai-jun(李乃军) School... ____________________________________________________________________________________________ Abstract: The application of microwave technique in the hydrometallurgy of nickel laterite ores was described. The mixture of nickel laterite ores and sulfuric acid was pre-treated......
molecular mass of Tween, the morphology of nickel powders changed from sphere to spiny ball. Key words: nickel powder; surfactant; dispersion; morphology; synthesis 1 Introduction Due to the high surface activity, low resistivity, great thermal and electrical conductivities, nano-sized nickel powder has been widely used as magnetic material [1-3], electrical conductive paste [4,5], catalyst [6-8......
in experiments. High-purity graphite powder was used as the reducing agent, and CaCO3 was used to promote the reaction. Table 1 Chemical composition of nickel slag (wt.%) Fig. 1 X-ray diffraction pattern... of the sample, the ratio of the actual carbon content added to the theoretical carbon required was 1.2:1 (i.e., 20% stoichiometric excess). The nickel slag was uniformly mixed with the graphite powder and CaCO3......
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Trans. Nonferrous Met. Soc. China 22(2012) 467-475 Electrodeposition conditions of metallic nickel in electrolytic membrane reactor REN Xiu-lian1, WEI Qi-feng1, LIU Zhe2, LIU Jun1 1. School... August 2011 Abstract: The process parameters were optimized for the electrodeposition of nickel in an electrolytic membrane reactor. Nickel(II) and boric acid concentrations, pH and temperature were......