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when the addition amount is below 2%. The refining mechanism is attributed to the formation of new compounds of Al-C-Mn particles by Al4C3 and Mn, which might act as nucleating substrates for α-Mg grain. Key words: AZ31 magnesium alloy; grain refinement; Al-5C master alloy; Al-C-Mn compounds 1 Introduction As the lightest metallic structure materials, magnesium alloys have been widely used......
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Gas sensitivity of polyaniline/SnO2 hybrids to volatile organic compounds GENG Li-na(耿丽娜) Department of Chemistry, Hebei Normal University, Shijiazhuang 050016, China Received 10 August 2009... mixing. Compared with single PAn and SnO2, the gas sensitivity of PAn/SnO2 materials to volatile organic compounds (VOCs, methanol, ethanol and acetone) was studied. The possible response mechanism......
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were polished with increasingly finer grades of emery paper, followed consecutively by a polishing with alumina compounds down 0.05 μm. However, the Al reference electrode was polished further... of sample; (c) EDS analysis, 70 mA/cm2; (d) XRD pattern, 70 mA/cm2 The electrochemical deposition of aluminum on copper electrode in AlCl3-NaCl melts indicates that intermetallic compounds......
Study of NdCl3-FeCl3-Graphite Intercalation Compounds by X-Ray Photoelectron Spectroscopy 侯仰龙1,韦永德1 (1.Center for Rare Earth Materials Engineering, Harbin Institute of Technology,) Abstract:NdCl3-FeCl3-graphite intercalation compounds were synthesized by molten-salt exchange method. The state of the intercalates and the relative contents of Nd, Fe, Cl, C in the product were determined by X-ray......
ELECTRONIC STRUCTURE OF THE LaNi5-xGax INTERMETALLIC COMPOUNDS G.X.Li1,D.Chen2,D.L.Zhang2,T.Gao3 (1.College of Science, Qingdao Agriculture University, Qingdao 266109, China;2.Department of Physics... structures and electronic structure of LaNii5-xGax (x=0, 0.5, 1.0)compounds have been investigated by all-electron calculations. Based on the full geometry optimization, the densities of states and electron......
Magnetic and Transport Properties of La0.5-xNdxBa0.5CoO3 Compounds 刘宜华1,梅良模1,张汝贞1,季刚1,黄宝歆1,王成建1 (1.School of Physics and Microelectronics, Shandong University, Jinan 250100, China) Abstract:Substituting effects of Nd for La in La0.5Ba0.5CoO3 compounds were studied systematically. The results show that Nd doping does not change the itinerant properties of the Co3d electrons. The molecular......
