کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10155431 | 1666349 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of pyrolytic carbon coating on the microstructure and fracture behavior of the Cf/ZrB2-SiC composite
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The high sintering temperature and interface interaction seriously degraded the toughening effects of continuous carbon fiber in ZrB2-SiC ceramic. The pyrolytic carbon coated carbon fiber reinforced ZrB2-SiC composite (Cf-PyC/ZrB2-SiC) with desirable properties was successfully achieved via brushing nano ZrB2-SiC slurry followed by spark plasma sintering at relatively low sintering temperature. The fabricated Cf-PyC/ZrB2-SiC composite presented a non-brittle fracture feature and a remarkable enhancement in comparison with the ZrB2-SiC composite reinforced by the as-received carbon fiber (Cf-AS/ZrB2-SiC). The fracture toughness and critical crack size were increased from 5.97â¯Â±â¯0.18-7.66â¯Â±â¯0.24â¯MPaâ¯m1/2 and from 91.6 to 164.5â¯Âµm, respectively. A high work of fracture of 1915â¯J/m2 for Cf-PyC/ZrB2-SiC composite was achieved, almost four times higher than that of the Cf-AS/ZrB2-SiC composite (463â¯J/m2). Multiple toughening mechanisms contributed to such enhancement, such as crack deflection, fiber bridging, fiber pull-out and crack branching. This work provides a feasible approach to fabricate high-performance fiber reinforced ceramic composites having a high work of fracture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19612-19618
Journal: Ceramics International - Volume 44, Issue 16, November 2018, Pages 19612-19618
نویسندگان
Dongyang Zhang, Ping Hu, Shun Dong, Qiang Qu, Xinghong Zhang,