کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10626268 | 989649 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Powder morphology modification and sinterability improvement of Ce0.8Sm0.2O1.9 derived from solution combustion process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Ce0.8Sm0.2O1.9 powders were synthesized by solution combustion process using a relatively low fuel (urea) concentration. The morphology of the powders was studied in relation to the synthetic process. The sinterability and microstructure of the ceramic specimens were investigated with respect to the powder morphology. The as-combusted powder showed sphere-like fine particles constituted by an aggregation of Ce0.8Sm0.2O1.9 nanocrystallites. A ball-milling process modified the morphology of the powder and improved the sinterability of the ceramic specimens. The fuel concentration of the combustion synthetic system played an important role in determining the morphology and the sintering reactivity of the resulting powders. The microstructure evolution of the ceramic specimens with sintering temperature was found to be closely related with the powder morphology. Ce0.8Sm0.2O1.9 ceramics with high relative densities (95.8-98.0%) and fine grains (0.2-0.3 μm) were prepared from the ball-milled powder at relatively low sintering temperatures of 1100-1200 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 37, Issue 3, April 2011, Pages 913-920
Journal: Ceramics International - Volume 37, Issue 3, April 2011, Pages 913-920
نویسندگان
Qing Xu, Duan-Ping Huang, Kai Zhao, Wen Chen, Min Chen, Bok-Hee Kim,