کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5440136 | 1509983 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ablation resistance of wedge-shaped C/C-ZrB2-ZrC-SiC composites exposed to an oxyacetylene torch
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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 ablation resistance of wedge-shaped C/C-ZrB2-ZrC-SiC composites was studied under an oxyacetylene torch. Ablation morphologies and phase compositions were examined by SEM and XRD. As exposed to low heat flux of 2.38Â MW/m2, a porous and homogeneous ZrC-ZrO2 skeleton generated. With the increasing of heat flux, ceramic oxides at the tip became loose and fragmented instead of sintering together. Besides that, owing to the wedge-shape of the specimen, high gas pressure mainly concentrated at this region. The high gas pressure and strong shear scouring of flame resulted in the limited accumulation of ceramic oxides. This led to an inferior ablation of wedge-shaped C/C-ZrB2-ZrC-SiC composites in high heat flux of 4.18Â MW/m2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 112, November 2016, Pages 462-470
Journal: Corrosion Science - Volume 112, November 2016, Pages 462-470
نویسندگان
Lei Zhuang, Qian-Gang Fu, Tian-Yu Liu,