The effect of calcium segregation on grain growth in nanocrystalline TiO2
作者： C.D. Terwilliger , Y.-M. Chiang
DOI: 10.1016/0965-9773(94)90017-5
关键词: Transmission electron microscopy 、 Metallurgy 、 Grain growth 、 Materials science 、 Microstructure 、 Activation energy 、 Nanocrystal 、 Chemical engineering 、 Differential scanning calorimetry 、 Nanocrystalline material 、 Grain size
摘要: Abstract Differential scanning calorimetry and transmission electron microscopy are used to monitor grain growth in nanocrystalline TiO 2 doped with Sn Ca. powder is prepared by a solution chemical method, consolidated samples have an initial mean size of 30–50 nm, density greater than 95% theoretical. Calcium effective inhibitor; the present show more resistance other reported date. A Kissinger analysis exotherms indicates activation energy 1.3–1.5 eV, calcium additions do not large effect on this value. These observations discussed light dependent segregation behavior that has been observed these using STEM microanalysis (1).
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