کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5438453 | 1398184 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The ablation behavior and mechanical property of C/C-SiC-ZrB2 composites fabricated by reactive melt infiltration
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The ablation behavior and mechanical property of C/C-SiC-ZrB2 composites fabricated by reactive melt infiltration The ablation behavior and mechanical property of C/C-SiC-ZrB2 composites fabricated by reactive melt infiltration](/preview/png/5438453.png)
چکیده انگلیسی
In order to improve the ablation resistance of carbon/carbon (C/C) composites, SiC-ZrB2 di-phase ceramic were introduced by reactive melt infiltration. The ablation properties of these composites were evaluated by oxyacetylene torch with a heat flux of 2.38Â MW/m2 for 60Â s. Compared with the pure C/C composites, the C/C-SiC-ZrB2 composites show a significant improvement in the ablation resistance, and the linear and mass ablation rates decreased from 10.28Ã10â3Â mm/s to 6.72Ã10â3Â mm/s and from 3.08Ã10â3Â g/s to 0.61Ã10â3Â g/s, respectively. After ablation test, the flexural strength retentions of the C/C and C/C-SiC-ZrB2 composites near the ablated center region are 39.7% and 81.6%, respectively. The higher strength retention rate of C/C-SiC-ZrB2 composites was attributed to the introduction of SiC-ZrB2 ceramic phases, which have excellent ablation resistant property. During ablation test, an 'embedding structure' of Zr-O-Si glass layer was formed, which could act as an effective barrier for oxygen and heat. The oxide ceramic coating could protect the C/C-SiC-ZrB2 composites from further ablation, and thus contribute to retaining the mechanical property of C/C-SiC-ZrB2 composites after ablation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 6138-6147
Journal: Ceramics International - Volume 43, Issue 8, 1 June 2017, Pages 6138-6147
نویسندگان
Yue Liu, Qiangang Fu, Beibei Wang, Tianyu Liu, Jia Sun,