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Correlation between the glass-forming ability and activation energy of crystallization for Zr75-xNi25Alx metallic glassesYan-hui Li1,Wei Zhang1,2,Chuang Dong1,Jian-bing Qiang1,Akihiro Makino21.... The apparent activation energy of glass transition rises monotonously with the Al content increasing; the activation energy of crystallization increases with Al changing from 8at% to 15at......
and copper activation processes of sphalerite. 2 Computational methods and model Calculations have been done using Cambridge Serial Total Energy Package (CASTEP) developed by PAYNE et al[8], which... 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 chromite ore particle size decrease and the lattice distortion. The formation of aggregation weakens the strengthening effect of mechanical activation for releasing high surface energy. Key words... Effect of mechanical activation on alkali leaching of chromite ore ZHANG Yang(张 洋)1, 2, ZHENG Shi-li(郑诗礼)1, DU Hao(杜 浩)1, XU Hong-bin(徐红彬)1, ZHANG Yi(张 懿)1 1. National Engineering Laboratory......
and studied. The deformation activation energy was calculated. The results show that the flow stress of Ti26 alloy decreases with the increase of temperature and the decrease of strain rate, and the deformation activation energy is 278.11 kJ/mol in b phase region. The flow stress curves and deformation activation energy reveal that the main softening mechanism is dynamic recovery in b phase region......
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Nanocrystalline Growth Activation Energy of Zirconia Polymorphs Synthesized by Mechanochemical TechniqueJafar Javadpour2,Alireza Khav2,Massoud Goodarzi2,Hamid Reza Rezaie22. School of Metallurgy... of ZrO2 was less than 100 nm up to around1100 ℃.The activation energy for ZrO2 nanocrystallite growth during calcination was calculated to be about13,715 and 27,333 J/mol for tetragonal(t-ZrO2......
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Effect of vacancy defects on electronic properties and activation of sphalerite (110) surface by first-principles CHEN Jian-hua(陈建华)1, CHEN Ye(陈 晔)2, LI Yu-qiong(李玉琼)2 1. College of Resources...: The electronic properties of sphalerite (110) surface with Zn-vacancy and S-vacancy were calculated by using density-functional theory, and the effects of vacancy defect on the copper activation of sphalerite were......
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J. Cent. South Univ. Technol. (2009) 16: 0385-0391 DOI: 10.1007/s11771-009-0065-8 Characteristics of activated carbon prepared from Chinese fir sawdust by zinc chloride activation under vacuum... fir sawdust by zinc chloride activation under both nitrogen atmosphere and vacuum conditions was carried out in a self-manufactured vacuum pyrolysis reactor. The effects of the system pressure......