کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1462822 989639 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Oxidation behavior of oxidation protective coatings for PIP–C/SiC composites at 1500 °C
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Oxidation behavior of oxidation protective coatings for PIP–C/SiC composites at 1500 °C
چکیده انگلیسی

Three-dimensional carbon fiber reinforced silicon carbide (C/SiC) composites were fabricated by precursor infiltration and pyrolysis (PIP) with polycarbosilane as the matrix precursor, SiC coating prepared by chemical vapor deposition (CVD) and ZrB2–SiC/SiC coating prepared by CVD with slurry painting were applied on C/SiC composites, respectively. The oxidation of three samples at 1500 °C was compared and their microstructures and mechanical properties were investigated. The results show that the C/SiC without coating is distorted quickly. The mass loss of SiC coating coated sample is 4.6% after 2 h oxidation and the sample with ZrB2–SiC/SiC multilayer coating only has 0.4% mass loss even after oxidation. ZrB2–SiC/SiC multilayer coating can provide longtime protection for C/SiC composites. The mode of the fracture behavior of C/SiC composites was also changed. When with coating, the fracture mode of C/SiC composites became brittle. When after oxidation, the fracture mode of C/SiC composites without and with coating also became brittle.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 38, Issue 1, January 2012, Pages 9–13
نویسندگان
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