High-energy synchrotron diffraction offers great potential for experimental study of recrystallization kinetics. An experimental design to study the recrystallization mechanism of interstitial-free （IF） steel was im...High-energy synchrotron diffraction offers great potential for experimental study of recrystallization kinetics. An experimental design to study the recrystallization mechanism of interstitial-free （IF） steel was implemented. The whole annealing process of cold-rolled IF steel with 80% reduction was observed in situ using high-energy X-ray diffraction （HEXRD）. The results show how the main texture component of IF steel change, i.e. the α [∥rolling direction （RD）] fiber texture decreases and the γ [∥normal direction （ND）] fiber texture increases. The important part of the α fiber texture is that both the {100} and {112} texture decrease at the beginning of recrystallization. The γ fiber texture increases at the early stage of recrystallization which stems from the increase of {111}. Nevertheless, the {111} does not change after recrystallization. The dynamic evolution of the main texture components {100}, {112}, {111} and {111} is given by in-situ HEXRD.展开更多
This work reports a simple,novel,cost effective and eco-friendly electrolytic synthesis of silver nanoparticles using AgNO3 as metal precursor.The synthesis rate is much faster than other methods and this approach is ...This work reports a simple,novel,cost effective and eco-friendly electrolytic synthesis of silver nanoparticles using AgNO3 as metal precursor.The synthesis rate is much faster than other methods and this approach is suitable for large scale production.They are characterized by XRD,SEM and FT-IR techniques to analyze size,morphology and functional groups.XRD studies reveal a high degree of crystallinity and monophasic Ag nanoparticles.Their particle size is found to be 24 nm and specific surface area(SSA)is 24 m^(2) g^(-1).Analysis of Ag nanoparticles SSA reports that increasing their SSA improves their antibacterial actions.Microbiology assay founds that Ag nanoparticles are effective against E.coli and B.megaterium bacteria.SSA of bacteria analysis reveals that it plays a major role while reacting with antimicrobial agents.展开更多
基金Sponsored by Key Projects in National Science and Technology Pillar Program of China(2011BAE13B03)Fundamental Research Funds for Central Universities of China(N110502001)
文摘High-energy synchrotron diffraction offers great potential for experimental study of recrystallization kinetics. An experimental design to study the recrystallization mechanism of interstitial-free （IF） steel was implemented. The whole annealing process of cold-rolled IF steel with 80% reduction was observed in situ using high-energy X-ray diffraction （HEXRD）. The results show how the main texture component of IF steel change, i.e. the α [∥rolling direction （RD）] fiber texture decreases and the γ [∥normal direction （ND）] fiber texture increases. The important part of the α fiber texture is that both the {100} and {112} texture decrease at the beginning of recrystallization. The γ fiber texture increases at the early stage of recrystallization which stems from the increase of {111}. Nevertheless, the {111} does not change after recrystallization. The dynamic evolution of the main texture components {100}, {112}, {111} and {111} is given by in-situ HEXRD.
文摘This work reports a simple,novel,cost effective and eco-friendly electrolytic synthesis of silver nanoparticles using AgNO3 as metal precursor.The synthesis rate is much faster than other methods and this approach is suitable for large scale production.They are characterized by XRD,SEM and FT-IR techniques to analyze size,morphology and functional groups.XRD studies reveal a high degree of crystallinity and monophasic Ag nanoparticles.Their particle size is found to be 24 nm and specific surface area(SSA)is 24 m^(2) g^(-1).Analysis of Ag nanoparticles SSA reports that increasing their SSA improves their antibacterial actions.Microbiology assay founds that Ag nanoparticles are effective against E.coli and B.megaterium bacteria.SSA of bacteria analysis reveals that it plays a major role while reacting with antimicrobial agents.
