کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9636457 | 465855 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
TiC nucleation/growth processes during SHS reactions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Observations of microstructure development during the formation of TiC from Ti and C are presented. Two different graphites as well as a quenching technique were used to study the effect of carbon grain size on nucleation and growth of TiC. In the case of small (7 μm) C particles, a quenched sample presents two distinct microstructures: large TiC crystals nucleated at the interface of liquid and solid Ti, and TiC nanocrystallites quenched from the melt. With Ti and C particles of the same diameter (â¼Â 20 μm), TiC nucleated on solid C particles. Finally, time resolved infrared thermography coupled with SEM observations is used in order to correlate temperature profiles and TiC microstructures. It is demonstrated that cooling rate and combustion temperature are the main factors controlling grain growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 157, Issues 1â3, 29 September 2005, Pages 92-99
Journal: Powder Technology - Volume 157, Issues 1â3, 29 September 2005, Pages 92-99
نویسندگان
Cochepin Benoit, Heian Ellen, Karnatak Nikhil, Vrel Dominique, Dubois Sylvain,