کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1471766 | 990360 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Niobium speciation at the metal/oxide interface of corroded niobium-doped Zircaloys: A X-ray absorption near-edge structure study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Niobium speciation at the metal/oxide interface of corroded niobium-doped Zircaloys: A X-ray absorption near-edge structure study Niobium speciation at the metal/oxide interface of corroded niobium-doped Zircaloys: A X-ray absorption near-edge structure study](/preview/png/1471766.png)
چکیده انگلیسی
X-ray absorption near-edge structure (XANES) spectroscopy is applied to Zr-based alloys ((Zr, x%Nb) with x ⩽ 1 wt.%) corroded in steam at 415 °C to resolve the niobium speciation in the metal and the oxide parts of their metal/oxide interface. By combining these synchrotron X-ray measurements with additional ab initio calculations of Nb K-edge XANES spectra, this study reveals (i) the presence of Nb0 in the metal and of Nb atoms having valency between +2 and +4 in the oxide as well as (ii) the coexistence of Nb-doped monoclinic and Nb-doped tetragonal zirconia structures within the oxide of the (Zr, 1.0%Nb) alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 50, Issue 5, May 2008, Pages 1313–1320
Journal: Corrosion Science - Volume 50, Issue 5, May 2008, Pages 1313–1320
نویسندگان
A. Froideval, C. Degueldre, C.U. Segre, M.A. Pouchon, D. Grolimund,