کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5440786 1398238 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterization of SiO2 thin film and SiC nanofibers to improve of graphite oxidation resistance
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Preparation and characterization of SiO2 thin film and SiC nanofibers to improve of graphite oxidation resistance
چکیده انگلیسی
In this study, a multiphase coating was prepared on a graphite substrate by a two-step technique to improve oxidation resistance of graphite. The first step was to prepare a functionally graded SiC layer by a pack cementation process and the second step was to obtain a nano SiC and SiO2 thin film coating by a slurry painting technique. The microstructure and the surface chemistry of the coating were characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The spectral deconvolution was conducted using CasaXPS software based on Gaussian-Lorentzian function. The isothermal oxidation test of the coated samples was performed at 1773 K for 10 h. A 500 μm thick graded C-SiC layer was observed at the graphite-coating interface. An amorphous SiO2 thin film and SiC nanofibers with the diameter in the range of 30-75 nm were formed on the coatings. The SiC nanofibers can efficiently improve oxidation resistance of graphite.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 36, Issue 16, December 2016, Pages 3947-3956
نویسندگان
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