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J. Cent. South Univ. Technol. (2011) 18: 73-77 DOI: 10.1007/s11771-011-0661-2 Electrochemical synthesis, characterization and thermal properties of niobium ethoxide CAI Ya-nan(蔡亚楠)1, YANG Sheng...; 2. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China ? Central South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: Niobium(V......
Niobium Extraction from Baotou Iron Ore Containing Niobium周渝生,杨天钧,孟涛,范鹏,董一诚,何旭初摘 要:<正> The experimental results of niobium enrichment in laboratory and in blast furnace in Baotou Iron andSteel Corporation were reported.The effects of temperature,constituents of slag and silicon content in hotmetal on niobium recovery were studied and the results......
Static oxidation behaviour of silicide coating on niobium alloy at high temperature XIAO Lai-rong(肖来荣)1, 2, XU Liang-liang(许谅亮)1, 2, YI Dan-qing(易丹青)1, 2, LIU Hui-qun(刘会群)1, 2, CAI Zhi-gang(蔡志刚... coating is parabolic. The diffusion of Si leads to the phase transformation and evolution during the oxidation. Key words: niobium alloy; silicide coating; static oxidation; diffusion; phase......
Rare Earths, Niobium and Tantalum Minerals in Bayan Obo Ore Deposit and Discussion on Their Genesis 张培善1,宋仁奎1,陶克捷1,杨学明1,杨主明1 (1.Institute of Geology and Geophysics, Chinese Academy of Sciences.... It is obviously that some minerals are strata minerals and some are post-strata minerals. The rare earths, niobium and tantalum minerals are exactly the post-strata minerals. In these minerals......
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On Niobium Reduction in Blast Furnace董一诚,杨天钧,孟涛,王振峰摘 要:<正> The Baotou Iron Ore of China contains very high niobium. This paper reported the results through laboratory and practical experiments on niobium enrichment in blast furnace. The effect of temperature, constituents of slag and silicon content in hot metal on niobium recovery was studied......
THE ROLE OF NIOBIUM IN NICKEL-BASED SUPERALLOYS AND CHARACTERIZATION OF PM ALLOY EP741NP T. Carneiro1,D. Furrer2,J. Radavich3 (1.Reference Metals Co., Bridgeville, PA 15017, USA;2.Ladish Go., Inc., Gudahy, WI 53110, USA;3.Micro-Met Laboratories, West Lafayette, IN 47906, USA) Abstract:The role of niobium in nickel-based superalloys is reviewed. The importance of niobium as a strengthener......
Formation of carbonitride precipitates in hardfacing alloy with niobium additionKe Yang,Qin Yang,Ye-Feng BaoCollege of Mechanical and Electrical Engineering, Hohai University摘 要:Niobium, as the most effective second-phase forming element, was added in the Fe-Cr13-C-N hard-facing alloy to get carbonitride precipitates. Morphology and composition......
Formation mechanism of titanium and niobium carbides in hardfacing alloyKe Yang,Kè Yang,Ye-Feng Bao,Yong-Feng JiangCollege of Mechanical and Electrical Engineering, Hohai University摘 要:The most effective carbide-forming elements titanium and niobium were added into hardfacing alloy.Formation and composition of carbides in the hardfacing alloy were......
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