کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1471801 990361 2007 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical reflection spectroscopy of thick corrosion layers on 304 stainless steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Optical reflection spectroscopy of thick corrosion layers on 304 stainless steel
چکیده انگلیسی

Corrosion resistant structural materials of both iron and nickel based alloys are used in the electric power industry for the construction of the coolant loops of both conventional and nuclear power generating stations. These materials, in the presence of high temperature (e.g. 287 °C), high pH (e.g. 10.0 at 20 °C) water with dissolved hydrogen will oxidize and form corrosion films that are double metal oxides (or spinels) of the form AB2O4. This work describes optical reflectivity techniques that have been developed to study the growth of these films in situ. The optical technique uses a dual-beam specular reflection spectrometer to measure the spectrum of reflected light in small angle (i.e. <15°) scatter. The reflection spectra are then calibrated using a set of corrosion coupons with corrosion films that are well known. Results are compared with models based on multilayer reflection and Mie scattering from a particle size distribution. Surface roughness is found to be the dominant cause of reduced reflection as the films grow.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Corrosion Science - Volume 49, Issue 12, December 2007, Pages 4396–4414
نویسندگان
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