کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8023463 1517533 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and oxidation behaviors of dense mullite‑silicon carbide‑silicon coating for graphite fabricated by dipping-pyrolysis and reactive infiltration
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Microstructure and oxidation behaviors of dense mullite‑silicon carbide‑silicon coating for graphite fabricated by dipping-pyrolysis and reactive infiltration
چکیده انگلیسی
A new-designed mullite-SiC-Si coating with dense structure for protecting graphite materials was prepared by dipping-pyrolysis combined with reactive infiltration. The phase synthesis, microstructure and anti-oxidation property of the fabricated mullite-SiC-Si coating were studied. Results demonstrated that the as-prepared coating exhibited excellent low and high temperature oxidation resistance, after isothermal oxidation at 900 °C and 1600 °C for 752 h and 550 h, respectively, the mass gains were 0.1% and 0.99%, respectively. The excellent anti-oxidation performance was ascribed to the dense structure of coating and the formed glassy oxide layer on the coating surface. The oxidation process of mullite-SiC-Si coating was controlled by the diffusion of oxygen, and the as-prepared coating after oxidation was composed of oxide layer and dense mullite-SiC-Si layer. In contrast to SiC-Si coating, the high temperature stability of mullite-SiC-Si coating was greatly improved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 350, 25 September 2018, Pages 410-418
نویسندگان
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