کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7893441 1509956 2018 40 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-temperature oxidation of pure Al: Kinetic modeling supported by experimental characterization
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
High-temperature oxidation of pure Al: Kinetic modeling supported by experimental characterization
چکیده انگلیسی
A composition- and temperature-dependent mobility database including bulk, grain boundary and dislocation diffusion in α-Al2O3 was developed. Three sets of mobility parameters for aluminum diffusion were evaluated. The experimental results including mass gain, oxide scale microstructure resulting from aluminum exposed at 1623 K under PO2 = 0.21 bar for 24 h were presented. Kinetic modeling of oxidation of pure aluminum were performed using CALPHAD method. The parameter set supporting that aluminum diffusion in α-Al2O3 has similar order of magnitude with oxygen diffusion can reproduce the experimental oxide thicknesses with good accuracy. Both simulations and experiments indicate internal and external oxidation occur simultaneously.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 139, 15 July 2018, Pages 355-369
نویسندگان
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