کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
144734 438945 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase transition and microstructure evolution during the carbothermal preparation of Ti(C,N) powders in an open system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Phase transition and microstructure evolution during the carbothermal preparation of Ti(C,N) powders in an open system
چکیده انگلیسی

Phase transition and microstructure evolution during carbothermal reduction–nitridation of TiO2 in an open system were investigated using XRD, TGA, SEM and laser particle analysis device. The results show that, the phase evolution sequences are: TiO2 (anatase) → TiO2(rutile) → TinO2n-1(n ⩾ 4) → Ti3O5 → Ti(N,O) → Ti(C,N,O) → Ti(C,N). In the reaction process, the predominant reaction mechanism is TiO2/C solid–solid reaction in the beginning and subsequent the gas–solid reactions mainly between oxides and CO, C and CO2. The synthesizing powders gradually become finer in form of uniform spherical particles with the formation of cubic phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advanced Powder Technology - Volume 21, Issue 4, July 2010, Pages 448–451
نویسندگان
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