کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1603338 1515978 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of titanium carbonitride nano-powder by carbothermal reduction of TiO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Synthesis of titanium carbonitride nano-powder by carbothermal reduction of TiO2
چکیده انگلیسی
The effects of oxide addition on the carbothermal reduction of fine TiO2 were studied for obtaining nano-powders. MoO3, WO3, ZrO2, Nb2O5 and Ta2O5 were used as additives. Each additive was mixed with TiO2 and C powder. The mixed powder was heat treated in flowing Ar up to 1500 °C. It was confirmed that MoO3 and WO3 were effective in yielding fine particles with size of about 0.1-0.2 μm. The addition of MoO3 resulted in the restriction of grain growth of the TinO2n − 1 phase. The calculation of vapor pressure of the added oxides indicated that the vapor pressure of MoO3 was highest among the oxides explored under an inert atmosphere. This suggested that Mo compounds were easily spread through the gas phase and were homogeneously distributed in the powder.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 42, January 2014, Pages 1-8
نویسندگان
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