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. The experimental results show that the chemical state of lanthanum changes during heating. It was proved, for the first time, that reacted metallic lanthanum appears at the surface of this kind of material at high temperature. Key words:chemical state; lanthanum; La2O3-Mo; cathode; rare earths; [全文内容正在添加中] ......
, the chemical state change of sulfur is a complex and key factor. It is not only an indicator of the extent and intensity of the bio-oxidation, but also controls the property of bio-leaching medium and the period of oxidation. The chemical state of sulfur in sulfides oxidized by leaching bacteria was studied with XPS. Sulfide minerals in the arsenic-bearing gold concentrate consist of pyrite......
materials were analyzed in details. Key words: β-Li2TiO3; supercell structure; defect; solid state method; wet chemical method; application 单斜相偏钛酸锂(β-Li2TiO3)作为国际热核试验反应堆计划(International thermo-nuclear... defects in β-Li2TiO3 were discussed. Besides, the effect of point defects on the supercell structure evolution was investigated. Several typical preparation methods, including the solid state synthesis......
-ray diffractometry (XRD) and scan electronic microscopy (SEM). The composition and chemical state near the film surface were obtained by X-ray photoelectron spectroscopy (XPS). On the sample surface, O 1s spectra can be assigned to those from the lattice and surface adsorbed oxygen ions, while C1s only result from surface contamination. The result shows that only one chemical state is found......
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Solid state interfacial reactions in electrodeposited Ni/Sn couplesDouglas-G.IveyDepartment of Chemical and Materials Engineering University of Alberta,Edmonton T6G 2G6,Canada摘 要:<正>Ni/Sn couples,prepared by sequentially electroplating Ni layers and Sn layers on metallized Si wafers,were employed to study the mierostructures and growth kinetics......
Trans. Nonferrous Met. Soc. China 20(2010) s781-s787 Microstructural characteristics of thixoforged A356 alloy in mushy state S. TAHAMTAN, A. FADAVI BOOSTANI Department of Materials... to the semi-solid state. The billet which has thixothropic characteristics is then formed in mushy zone. Rheocasting involves stirring the alloy during solidification to produce a semi-solid slurry......
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methods for screening and discovering novel luminescent materials,including solid state combinatorial chemistry,chemical unit substitution,single particle diagnosis and high-throughput calculations.These...Recent progress on discovery of novel phosphors for solid state lightingXuefang Luo,Rong-Jun XieCollege of Materials,Xiamen University摘 要:Luminescent......
