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Title: Optical Reflection Spectroscopy of Thick Corrosion Layers on 304 Stainless Steel

Abstract

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 AB{sub 2}O{sub 4}. 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{sup o}) 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.

Authors:
; ; ;
Publication Date:
Research Org.:
Knolls Atomic Power Laboratory (KAPL), Niskayuna, NY
Sponsoring Org.:
USDOE
OSTI Identifier:
881303
Report Number(s):
LM-06K035
TRN: US200612%%795
DOE Contract Number:  
DE-AC12-0039357
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 29 ENERGY PLANNING, POLICY AND ECONOMY; 36 MATERIALS SCIENCE; 42 ENGINEERING; ALLOYS; BUILDING MATERIALS; COOLANT LOOPS; CORROSION; ELECTRIC POWER INDUSTRY; HYDROGEN; IRON; NICKEL; NUCLEAR POWER; OPTICAL REFLECTION; OXIDES; PARTICLE SIZE; REFLECTION; SPECTROMETERS; SPECTROSCOPY; STAINLESS STEELS

Citation Formats

R Castelli, P Persans, W Strohmayer, and V Parkinson. Optical Reflection Spectroscopy of Thick Corrosion Layers on 304 Stainless Steel. United States: N. p., 2006. Web. doi:10.2172/881303.
R Castelli, P Persans, W Strohmayer, & V Parkinson. Optical Reflection Spectroscopy of Thick Corrosion Layers on 304 Stainless Steel. United States. doi:10.2172/881303.
R Castelli, P Persans, W Strohmayer, and V Parkinson. Thu . "Optical Reflection Spectroscopy of Thick Corrosion Layers on 304 Stainless Steel". United States. doi:10.2172/881303. https://www.osti.gov/servlets/purl/881303.
@article{osti_881303,
title = {Optical Reflection Spectroscopy of Thick Corrosion Layers on 304 Stainless Steel},
author = {R Castelli and P Persans and W Strohmayer and V Parkinson},
abstractNote = {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 AB{sub 2}O{sub 4}. 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{sup o}) 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.},
doi = {10.2172/881303},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 23 00:00:00 EST 2006},
month = {Thu Mar 23 00:00:00 EST 2006}
}

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