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Determination of the Apparent Activation Energy of Concrete Carbonation李果,YUAN Yingshu,DU Jianmin,JI YongshengJiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering,China... quickly the concrete carbonates,and at the same time it is also affected by environmental relative humidity.Thereafter,the apparent activation energy E a of concrete carbonation reaction was obtained......
fiber to Ti matrix. The interfacial reaction layer growth is controlled by diffusion and follows a role of parabolic rate, and the activation energy (Qk) and (k0) of SiC/TA1 are 252.163 kJ/mol and 7.34×10-3 m/s1/2, respectively. Key words: SiC/TA1composite; reaction diffusion; interfacial phases; activation energy  ......
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conductivity of Na3AlF6-AlF3-Al2O3-CaF2-LiF(NaCl) system was studied by this method. Activation energy of conductance was obtained based on the experiment results. The experiments show that electrical... by the Choudhary Model. Key words: electrical conductivity; aluminium electrolyte; additive; superheat; activation energy of conductance  ......
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that of conventional sintering at a temperature higher than 1050℃. This is attributed to the lower activation energy and higher grain boundary mobility. The activation energy required for the grain growth... environment by microwave sintering process. 关键词:sintering; activation energy; grain growth; diffusion; ferroelectrics; [全文内容正在添加中] ......
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is an important part of the output electric quantity. Key words: sphalerite mineral; electro-generative leaching; bio-oxidation; activation energy  ... technique. 3.2 Activation energy of electro-generative leaching for sphalerite As mentioned above, the five temperature points of A. ferrooxidans, 299, 301, 303, 305 and 307 K were favored. The effect......