کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5437798 | 1398178 | 2017 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oxidation and thermal shock resistant properties of Al-modified environmental barrier coating on SiCf/SiC composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
SiCf/SiC ceramic matrix composites (CMCs) are being widely used in the hot-sections of gas-turbines, especially for aerospace applications. These CMCs are subjected to surface recession if exposed to heat-corrosion. In this research, an alternative environmental barrier coating (EBC) is introduced to protect the SiCf/SiC CMC from high temperature degradation that is, Al film was deposited on the surface of SiCf/SiC CMC followed by heat-treatment in a vacuum. After that, a dense Al2O3 overlay was in-situ synthesized on the surface of CMC, and in this process the microstructure evolution of SiCf/SiC CMC was analyzed. The oxidation and thermal shock resistance were characterized, showing that the Al-modified SiCf/SiC CMC has a better oxidation resistance, because the dense Al2O3 overlay can hinder oxygen diffusion from environment. What is more, the water-quenching testes show that the Al-modified SiCf/SiC CMC has a good spallation resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 16, November 2017, Pages 13075-13082
Journal: Ceramics International - Volume 43, Issue 16, November 2017, Pages 13075-13082
نویسندگان
X.F. Zhang, K.S. Zhou, M. Liu, C.M. Deng, C.G. Deng, S.P. Niu, S.M. Xu,