کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1472470 990385 2006 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nano-scale chemical analyses of passivated surface layer on stainless steels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Nano-scale chemical analyses of passivated surface layer on stainless steels
چکیده انگلیسی

A surface analysis technique using scanning transmission electron microscopy (STEM) combined with a unique needle shape specimen is proposed. The unique needle shape specimen is effective to reduce matrix convolution as well as improve peak to background ratio of spectroscopy. To reveal the performance of the proposed technique, HNO3 passivated surface layer on a type 436L ferritic and a type 304 austenitic stainless steels were analyzed. The results demonstrated that the proposed technique is able to quantify the distribution of alloying elements in the passivated surface layer approximately 3 nm in thickness, namely, the partitioning behaviour of alloying elements, i.e., Cr, Ni, Mo and Si in the passivated surface layer is revealed and agreed with that confirmed by Auger Electron Spectroscopy analysis. This proposed technique has potentialities for the analysis of nano scale local inhomogeneity, for example, pitting initiation process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 48, Issue 6, June 2006, Pages 1307–1318
نویسندگان
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