کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1464836 989672 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of aging on nanocrystalline anatase-to-rutile phase transformation kinetics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Effects of aging on nanocrystalline anatase-to-rutile phase transformation kinetics
چکیده انگلیسی

The effects of aging on the kinetics for nanocrystalline anatase-to-rutile phase transformation were investigated. The agglomeration and crystallite sizes for TiO2 gels decreased with increasing aging treatment. For unaged samples, the agglomeration number was high, so that there are a larger number of anatase crystallites and crystallite–crystallite anatase contacts in each cluster. This promotes interfacial nucleation. Therefore, the activation energy of nucleation calculated for unaged samples was smaller than that for those found for the aged ones.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 34, Issue 3, April 2008, Pages 557–561
نویسندگان
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