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Quantum-mechanical study of effect of lattice defects on surface properties and copper activation of sphalerite surface CHEN Jian-hua(陈建华)1, CHEN Ye(陈 晔)2, LI Yu-qiong(李玉琼)2 1. College... on the copper activation of sphalerite were investigated. Calculated results indicate that both Fe and Mn impurities narrow the band gap of sphalerite surface and lead to the Fermi level shifting......
becomes larger with the increasing strain rate at the same temperature, and gets smaller with the increasing deformation temperature at the same strain rate. The deformation activation energy increases greatly in the range of 400-450℃, and no more change in the range of 300-400℃. The alloy can be extruded successfully at 350℃ with σb of 275.5MPa and δ of 13.5%. The mechanical properties......
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and mechanical properties of Al-6Zn-2Mg-1.5Cu-0.4Er alloy LIU Ying-ying(刘莹颖), XIA Chang-qing(夏长清), PENG Xiao-min(彭小敏) School of Materials Science and Engineering, Central South University, Changsha...; Abstract: The microstructures and mechanical properties of A1-6Zn-2Mg-1.5Cu-0.4Er alloy under different treatment conditions were......
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; 文献标志码:A 文章编号:1672-7207(2010)06-2085-06 Effect of mechanical activation on leaching kinetics of pyrrhotite ZHANG You-xin, HE Li-hua, LIU Xu-heng... size analysis were used for studying the nonactivated and mechanical activated pyrrhotite in a vibrating mill. The influence of mechanical activation on leaching kinetics of pyrrhotite by FeCl3-HCl......
Mechanical alloying and characteristics of spark plasma sintering of Ti-Al composite powders CHEN Hua(陈 华), XUE Tao(薛 涛), MEN Hong-zhi(门洪志) School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China Received 15 July 2007; accepted 10 September 2007 Abstract: The mechanical alloying process of Ti-Al composite powders were carried out......
Fabrication, lattice strain, corrosion resistance and mechanical strength of nanocrystalline nickel films PAN Yong(潘 勇)1, 2, ZHOU Yi-chun(周益春)1, 2, ZHOU Zhao-feng(周兆锋)1, 2, HUANG Yong-li(黄勇力)1, 2... the energy density and the atomic cohesive energy in the surface skins of the grains. The surface energy density gain is responsible for the residual atomic cohesive energy for the activation energy......
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