کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1483597 1510539 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystallization of polymer-derived SiC/BN/C composites investigated by TEM
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Crystallization of polymer-derived SiC/BN/C composites investigated by TEM
چکیده انگلیسی

The crystallization behavior of two polymer-derived Si/B/C/N ceramics with similar compositions lying close to the three-phase field BN + SiC + C was investigated by (high-resolution) transmission electron microscopy. The materials were high-temperature mass stable up to T = 2000 °C. During thermolysis at 1050 °C a homogeneous amorphous solid formed. SiC crystallization started at about 1400 °C. Further annealing to higher temperatures up to 2000 °C led to formation of microstructures composed of SiC crystals embedded into a structured BNCx matrix phase. With increasing temperature, both the size of the crystallites and the ordering of the matrix phase increased.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 353, Issues 16–17, 1 June 2007, Pages 1567–1576
نویسندگان
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