کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1611759 1516295 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterization and formation mechanism of SiC/spinel nanocomposite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Synthesis, characterization and formation mechanism of SiC/spinel nanocomposite
چکیده انگلیسی
This paper reports the successful synthesis of SiC/spinel (MgAl2O4) nanocomposite from talc, aluminum and graphite powders. The initial powders were mixed to obtain stoichiometric spinel containing 27.26 wt.% SiC. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM) techniques were utilized to characterize the synthesized powders. SiC/spinel nanocomposite was obtained after 6 h ball milling of initial materials in argon atmosphere with subsequent annealing at 1200 °C for 1 h in vacuum. The obtained nanocomposite had crystallites size between 1 and 15 nm with the mean diameter of 9 nm. The SiC/spinel composite formation mechanism was scrutinized. The results showed that SiC/spinel nanocomposite was not produced directly and the formation of some intermediate compounds is unavoidable during the synthesis procedure. The SiC/spinel nanocomposite powder may be a potential nanocomposite for high temperature applications with self-crack-healing capability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 598, 15 June 2014, Pages 106-112
نویسندگان
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