کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8026639 1517609 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation of a multi-composition coating for oxidation protection of modified carbon-bonded carbon fiber composites by a rapid sintering method
ترجمه فارسی عنوان
آماده سازی یک ترکیب چند ترکیب برای حفاظت اکسیداسیون کامپوزیت های فیبر کربن با کربن اصلاح شده توسط یک روش سریع پخت
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
In order to improve the oxidation resistance of carbon-bonded carbon fiber composites, a multi-composition coating consisting of multilayer ZrB2-SiC whiskers(SiCw)-borosilicate/ZrB2-MoSi2-SiCw-borosilicate was prepared on the surface of ZrB2-modified carbon-bonded carbon fiber composites (M-CBCF) by a rapid sintering method in trace amounts of oxygen environment. The inner-layer ZrB2-SiCw-borosilicate was first prepared by instantaneous vacuum-impregnation to seal the surface pores of M-CBCF, and the outer-layer ZrB2-MoSi2-SiCw-borosilicate was obtained by slurry spraying. The multilayer-coated composites were embedded in graphite powders and sintered at 1723 K for 10 min in atmosphere. The results showed that the prepared ZrB2-SiCw-borosilicate/ZrB2-MoSi2-SiCw-borosilicate coating had remarkable oxidation resistance and could protect M-CBCF from high-temperature erosion. The weight loss rate of the double-layer-coated composites was only 0.44% after oxidation for 100 min at 1773 K, while the weight loss rate of inner-layer-coated composites reached 25.35%. The oxidation resistance of multilayer coating was mainly attributed to the high viscosity of glass phase, matched thermal expansion coefficient and the toughening effect of SiCw.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 270, 25 May 2015, Pages 109-116
نویسندگان
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