کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10625030 989613 2014 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature-dependent microstructure and phase evolution of iron-containing SiC fibers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Temperature-dependent microstructure and phase evolution of iron-containing SiC fibers
چکیده انگلیسی
Oxygen-free silicon carbide (SiC) fibers were prepared by using polycarbosilane and iron pentacarbonyl [Fe(CO)5] as the raw material. The developments in microstructure and phase of the fibers upon the selected heat-treated temperatures were studied by XRD, FTIR, DTA-TG, SEM, and TEM techniques. The results revealed that the sintering of SiC fibers was promoted by introducing small amount of Fe. The iron-containing nanoparticles existed in the form of α-Fe in the SiC fibers pyrolyzed below 1000 °C. Above 1200 °C, most of the iron-containing nanoparticles existed in the form of Fe3Si. The SiC grains became obviously coarse above 1600 °C due to the decomposition of SiCxOy. After being sintered at 1800 °C, the final iron-containing SiC fibers were oxygen-free and remained dense.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 9, Part A, November 2014, Pages 14223-14227
نویسندگان
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