کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1476121 991142 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Combustion synthesis of TiCx–TiB2 composites with hypoeutectic, eutectic and hypereutectic microstructures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Combustion synthesis of TiCx–TiB2 composites with hypoeutectic, eutectic and hypereutectic microstructures
چکیده انگلیسی

Self-propagating high-temperature synthesis (SHS) of compacted blends of Ti, B4C and/or C powders was used to fabricate in situ TiCx–TiB2 composites with different compositions. The microstructures of the resultant products were studied by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM), and the reaction sequence in the SHS reaction process was explored by quenching the combustion wavefront. The results showed that the TiCx–TiB2 composites with 27.4, 36.7 and 61.7% TiB2 in molar fractions display hypoeutectic, eutectic and hypereutectic microstructures, respectively, and TiCx is the leading phase in formation of the eutectic phase during solidification. Moreover, substoichiometric TiCx forms prior to TiB2 in phase formation sequence even for the hypereutectic composition sample.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 28, Issue 11, 2008, Pages 2275–2279
نویسندگان
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