کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10626128 | 989643 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of SiC/SiO2 core-shell powder by rotary chemical vapor deposition and its consolidation by spark plasma sintering
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
SiC (core) and SiO2 (shell) powders were synthesized via rotary chemical vapor deposition (RCVD). The SiC particles (3C, <1 μm in diameter) were coated with a layer of SiO2 (10-15 nm in thickness). Using spark plasma sintering, the SiC/SiO2 nanopowders were then synthesized into SiC/SiO2 composite bodies. Although a phase transformation from 3C to 6H was observed at above 2123 K in the sintered monolithic SiC bodies, sintered SiC/SiO2 bodies did not display such phase transformation. In addition, SiC/SiO2 bodies did not exhibited grain growth until the sintering temperature reached 2223 K. The density and Vickers hardness of the sintered SiC/SiO2 bodies increased with increasing sintering temperature. The highest density and hardness of SiC/SiO2 composite bodies were 98.1% and 24.4 GPa at 2223 K, respectively, which were higher than the corresponding values of 90% and 14 GPa for monolithic SiC bodies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 39, Issue 3, April 2013, Pages 2605-2610
Journal: Ceramics International - Volume 39, Issue 3, April 2013, Pages 2605-2610
نویسندگان
Zhenhua He, Rong Tu, Hirokazu Katsui, Takashi Goto,