کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7832977 | 1503515 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A SiCnw/PyC -toughened ZrB2-SiC coating for protecting Si-SiC coated C/C composites against oxidation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel ZrB2-SiC ceramic coating reinforced with well-dispersed SiC nanowire/pyrolytic carbon (SiCnw/PyC) core-shell structures was prepared on Si-SiC coated carbon/carbon (C/C) composites by heat treatment, chemical vapor deposition (CVD) and pack cementation. Compared to the ZrB2-SiC coating only toughened by SiC nanowires, the ZrB2-SiC coating with SiCnw/PyC structures shows a better oxidation resistance due to Si in raw materials reacting with PyC to generate dense SiC layer, which leads to an efficient load transfer from coating to SiCnw/PyC structure. The results of thermogravimetric analysis shows that the maximal mass loss of the coated C/C specimen with SiCnw/PyC structures is only 2.20% from 323â¯K to 1673â¯K, and its mass loss is only 0.30% after thermal shock between room temperature and 1673â¯K for 40 times.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 457, 1 November 2018, Pages 360-366
Journal: Applied Surface Science - Volume 457, 1 November 2018, Pages 360-366
نویسندگان
Chunyu Cheng, Hejun Li, Qiangang Fu, Liping Guo,