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08608 Modeling the Effects of Nuclear Environments on Crevice Corrosion of Pure Nickel by Coupling of Phase and Polarization Behavior

Product Number: 51300-08608-SG
ISBN: 08608 2008 CP
Author: Hans Hoffmeister
Publication Date: 2008
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$20.00
As from frequent observations Stress Corrosion Cracking (SCC) of nuclear reactor components may be initiated and its propagation also controlled by local pitting and crevice corrosion. Deterministic modeling of local corrosion including incubation times for crevice corrosion and related anodic acidification should therefore provide a basis for component lifetime predictions. Based on previous work for room temperature (RT), the crevice corrosion at 288°C of nickel as an important base element in respective high alloyed nuclear materials is modeled by coupling anodic polarization with formation of nickel oxide and chloride calculated from the water-hydrogen-nickelchloride heterogeneous phase equilibrium diagram. As a boundary condition, hydrogen treatment of irradiation subjected cooling water for reduction of corrosion potentials and mitigation of SCC in Boiling Water Reactors (BWR) is included.
As from frequent observations Stress Corrosion Cracking (SCC) of nuclear reactor components may be initiated and its propagation also controlled by local pitting and crevice corrosion. Deterministic modeling of local corrosion including incubation times for crevice corrosion and related anodic acidification should therefore provide a basis for component lifetime predictions. Based on previous work for room temperature (RT), the crevice corrosion at 288°C of nickel as an important base element in respective high alloyed nuclear materials is modeled by coupling anodic polarization with formation of nickel oxide and chloride calculated from the water-hydrogen-nickelchloride heterogeneous phase equilibrium diagram. As a boundary condition, hydrogen treatment of irradiation subjected cooling water for reduction of corrosion potentials and mitigation of SCC in Boiling Water Reactors (BWR) is included.
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