کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886238 | 1509785 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and properties of a graphene platelets toughened boron carbide composite ceramic by spark plasma sintering
ترجمه فارسی عنوان
ریزساختار و خواص یک پلاکت گرافن فشرده شده با سرامیک کامپوزیت کاربید بور
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
A kind of B4C/SiC composite ceramic toughened by graphene platelets and Al was fabricated by spark plasma sintering. The effects of graphene platelets and Al on densification, microstructure and mechanical properties were studied. The sintering temperature was decreased about 125-300â¯Â°C with the addition of 3-10â¯wt% Al. Al can also improve fracture toughness but decrease hardness. The B4C/SiC composite ceramic with 3â¯wt%Al and 1.5â¯wt% graphene platelets sintered at 1825â¯Â°C for 5â¯min had the optimal performances. It was fully densified, and the Vickers hardness and fracture toughness were 30.09â¯Â±â¯0.39â¯GPa and 5.88â¯Â±â¯0.49â¯MPaâ¯m1/2, respectively. The fracture toughness was 25.6% higher than that of the composite without graphene platelets. The toughening mechanism of graphene platelets was also studied. Pulling-out of graphene platelets, crack deflection, bridging and branching contributed to the toughness enhancement of the B4C-based ceramic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15370-15377
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15370-15377
نویسندگان
Mingdan Chen, Zengbin Yin, Juntang Yuan, Weiwei Xu, Jiadong Ye, Shiyu Yan,