کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1332597 979047 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Estimation of the intrinsic stresses in α-alumina in relation with its elaboration mode
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Estimation of the intrinsic stresses in α-alumina in relation with its elaboration mode
چکیده انگلیسی

The specific signatures of α-Al2O3 by Fourier transform infrared (FTIR) spectroscopy were investigated to estimate the intrinsic stress in this compound according to its elaboration mode. Thus, α-alumina was prepared either by calcination of boehmite or gibbsite and also generated by oxidation of a metallic FeCrAl alloy. FTIR results were mainly supported by X-ray diffraction (XRD) patterns that allowed to determine the crystallite size and the strain in the various alpha aluminas. Moreover, the infrared peak at 378.7 cm−1 was used as a reference for stress free α-alumina and the shift of this peak allowed to estimate intrinsic stresses, which were related to the morphology and to the specific surface area of aluminas according to their elaboration mode. These interpretations were confirmed by results obtained by cathodoluminescence experiments.

The infrared peak at 378.7 cm−1 was used as a reference for stress free α-alumina and the shift of this peak allowed to estimate intrinsic stresses, which were related to the morphology and to the specific surface area of aluminas according to their elaboration mode.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 183, Issue 5, May 2010, Pages 1063–1070
نویسندگان
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