کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886011 | 1509785 | 2018 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Y2O3 on the oxidation properties of ZrSi2/SiC coating prepared by SAPS on the carbon-carbon 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
In order to improve the oxidation resistance of carbon-carbon (C/C) composites at high temperature, different content of Y2O3 modified ZrSi2/SiC coating for C/C composites were prepared by pack cementation and supersonic atmosphere plasma spraying (SAPS). Microstructure observation and phase identification of the coatings were analyzed by SEM, XRD, DSC/TG and EDS. Experimental results shown that the coating with 10â¯wt% Y2O3 effectively protected C/C composites from oxidation at 1500â¯Â°C in air for 301â¯h with a mass loss of 0.13% and experienced 18 thermal shock times from room temperature (RT) to 1500â¯Â°C. First, Y2O3 could restrain the phase transition of ZrO2 to reduce the formation of thermal stresses of the coating; second, the random distribution of ZrO2 ceramic particles and the formation of ZrSiO4 enhanced the stability of the SiO2; third, the formation of Y2Si2O7 and Y2SiO5 could relieve the thermal mismatch between ZrSi2-Y2O3 outer layer and the inner layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15065-15071
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15065-15071
نویسندگان
Fei Liu, Hejun Li, Shengyue Gu, Xiyuan Yao, Qiangang Fu,