کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1283633 1497645 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of Si and Al concentrations in Fe–Cr alloy on the formation of oxide scales in H2–H2O
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Effects of Si and Al concentrations in Fe–Cr alloy on the formation of oxide scales in H2–H2O
چکیده انگلیسی

Effects of silicon and aluminum concentrations in Fe–Cr alloys on the formation of oxide scales were examined in H2–H2O atmosphere for interconnects of solid oxide fuel cells (SOFCs). The morphology and oxide scale growth rates were compared between conventional and modified Fe–Cr alloys (Si and Al concentration reduced). The formed oxide scales were characterized by surface and depth profile analyses. Oxide scales were composed of the following oxide phases from surface to inner oxide scale: Mn–Cr–(Fe) spinel, Cr2O3, Si-rich interface, and Al2O3 internal oxide. Although the scale formation mechanism is similar between conventional and modified alloys, the oxide scale growth rates were decreased in the modified Fe–Cr alloy. The electrical conductivity of oxidized Fe–Cr alloys was improved in the modified Fe–Cr alloy due to thinner oxide scale thickness and complete Cr2O3 film with less distribution of insulating Si and Al internal oxides.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 33, Issue 21, November 2008, Pages 6308–6315
نویسندگان
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