کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7893016 1509954 2018 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of Sn-VO defect clustering on Zr alloy corrosion
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The effect of Sn-VO defect clustering on Zr alloy corrosion
چکیده انگلیسی
Density functional theory simulations were used to study Sn defect clusters in the oxide layer of Zr-alloys. Clustering was shown to play a key role in the accommodation of Sn in ZrO2, with the {SnZr:VO}× bound defect cluster dominant at all oxygen partial pressures below 10−20 atm, above which SnZr× is preferred. {SnZr:VO}× is predicted to increase the tetragonal phase fraction in the oxide layer, due to the elevated oxygen vacancy concentration. As corrosion progresses, the transition to SnZr×, and resultant destabilisation of the tetragonal phase, is proposed as a possible explanation for the early first transition observed in Sn-containing Zr-Nb alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 141, 15 August 2018, Pages 14-17
نویسندگان
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