JIANG Guochang XU Kuangdi DENG Jianxiong Shanghai University of Technology
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Shanghai
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ChinaGUO Zhancheng GUAN Yulong Beiiing University of Science and Technology
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Beijing
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China Jiang Guochang Associate Professor
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The Institute of Metallurgy and Materials
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Shanghai University of Technology
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Shanghai 200072
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China
金属学报(英文版)
The curve of % S vs reaction time is described quantitatively based on the electrochemical model directly deduced from the principle of electrochemistry as well as the given method for calculating the initial oxygen potential along slag/steel interface.The calculated data is in good agreement with the experimental results. During desulphurization,both L_s~* and L_s,the sulphur partition along the interface and that in the bulk,go up in association with the descending of oxygen potential along interface. The plot of L_s~* against reaction time follows a parabolic curve,while that of L_s is of hyperbola type.Correspondingly,on curves of driving force parameter vs reaction tone,either calculated or experimental,a hump occurs.
关键词:
slag/steel interface
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Yuanda DONG Dept.of Metallurgy and Materials
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Shanghai University of Technology
,
Shanghai
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200072
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China
材料科学技术（英文）
The mechanism of mechanically-driven amorphization was extensively surveyed in various systems. It was concluded that the amorphization could occur in the systems of Cu-Zr with a negative heat of mixing (-ΔH) and Cu-Ta with a positive heat of mixing (+ΔH) by mechanical alloying of elemental powders.Such amorphization could also be started from an intermetallic compound Cu_xZr_y with no chemical reaction involved.The energy storage by mechanical attrition should be the driving force for the amorphization.The atomic distribution function and nuclear resonance spectroscopic studies show that the mechanical alloying provides a true alloying on an atomic level.The alloys formed are of a characteristic structure common to the rapidly quenched amorphous alloys.
关键词:
mechanically-driven amorphization
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