کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1602679 | 1515968 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics of titanium nitride synthesized with Ti and N2
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
The kinetics of titanium nitride synthesized with Ti and N2 at different temperatures were examined by differential scanning calorimetry and thermogravimetry. The maximum conversion degrees after 4 h were 0.55, 0.76, 0.93, and 0.96 at 800, 900, 1000, and 1100 °C, respectively. The reaction mechanism was analyzed through both model fitting method and ln-ln analysis method. Results showed that the reaction was initially controlled by nucleation and growth, as represented by the kinetic equation: [â ln(1 â a)]4 = kt, Then the reaction was controlled by three-dimension diffusion, as represented by the kinetic equation: [1 â(1 â a)1/3]2 = kt. Activation energies for the two stages were 214.84 and 124.01 kJ/mol respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 52, September 2015, Pages 165-170
Journal: International Journal of Refractory Metals and Hard Materials - Volume 52, September 2015, Pages 165-170
نویسندگان
Chunxin Li, Xuewei Lv, Jie Chen, Xuyang Liu, Chenguang Bai,