کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1464810 | 989671 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ti-based nanocoatings on Al2O3 powders
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Ti-based nanocoatings on ceramic powders were successfully fabricated by heterogeneous precipitation method. Commercial Al2O3 (average particle size of 0.5 μm), titanium tetrabutoxide (Ti(C4H9O)4) and urea (CO(NH2)2) have been used as starting materials. Selecting appropriate precipitation conditions, both the thickness and the uniformity of Ti-based nanocoatings were adjusted. With a molar ratio TiO2/Al2O3 = 0.05 and the use of urea in excess, a homogeneous nanocoating of â¼20 nm on the alumina powder surface was attained. FTIR spectra indicated the formation of the TiO2-based nanocoating onto Al2O3 particles and TEM examinations showed that the amorphous coating layer crystallized to <10 nm TiO2 particles upon calcination at 500 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 33, Issue 5, July 2007, Pages 875-878
Journal: Ceramics International - Volume 33, Issue 5, July 2007, Pages 875-878
نویسندگان
M. Villegas, T. Sierra, A.C. Caballero, J.F. Fernandez,