Investigation of the temperature effect on the oxide layer formed on Alloy 182 in simulated PWR environment.

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Investigation of the temperature effect on the oxide layer formed on Alloy 182 in simulated PWR environment. / Mendonça, Renato; Bosch, Rik-Wouter; Van Renterghem, Wouter; Gavrilov, Serguei (Peer reviewer).

EUROCORR 2014 - EUROPEAN CORROSION CONGRESS. Frankfurt, Germany, 2014.

Research output: Contribution to report/book/conference proceedingsIn-proceedings paperpeer-review

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Mendonça, R, Bosch, R-W, Van Renterghem, W & Gavrilov, S 2014, Investigation of the temperature effect on the oxide layer formed on Alloy 182 in simulated PWR environment. in EUROCORR 2014 - EUROPEAN CORROSION CONGRESS. Frankfurt, Germany, EUROCORR 2014 - EUROPEAN CORROSION CONGRESS The annual event of the European Federation of Corrosion, Pisa, Italy, 2014-09-08.

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@inproceedings{476a645877ab4051bb9f7a3dd30a9fe4,
title = "Investigation of the temperature effect on the oxide layer formed on Alloy 182 in simulated PWR environment.",
abstract = "Ni-based alloys show a peak in SCC susceptibility at a certain temperature and hydrogen concentration. This peak is related to the electrochemical condition where the Ni to NiO transition takes place. One assumption is that the oxide layer at this condition is not properly developed and so the material is not optimal protected to SCC. Therefore the oxide layer formed on Alloy 182 is investigated as a function of the water chemistry and temperature. The main aim of this work is to correlate the behaviour and composition of the different oxide layers formed in high temperature water. Exposure tests have been performed with Alloy 182 and Ni coupons in a PWR environment as a function of temperature for a dissolved hydrogen concentration of 35 cc/kg. The temperature ranged from 300 to 345°C as in this range the Ni/NiO transition is located based on thermodynamic calculations. Post-test analysis of the formed oxide layers have been carried out by Scanning Electron Microscopy and Energy Dispersive Spectroscopy. The first results showed that there is a large difference between the low (300°C) and high (345°C) exposure temperature w.r.t. the oxide layer morphology.",
keywords = "Ni-based alloy, oxide layers, PWSCC",
author = "Renato Mendon{\c c}a and Rik-Wouter Bosch and {Van Renterghem}, Wouter and Serguei Gavrilov",
note = "Score = 3; EUROCORR 2014 - EUROPEAN CORROSION CONGRESS The annual event of the European Federation of Corrosion ; Conference date: 08-09-2014 Through 12-09-2014",
year = "2014",
month = sep,
day = "8",
language = "English",
booktitle = "EUROCORR 2014 - EUROPEAN CORROSION CONGRESS",

}

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TY - GEN

T1 - Investigation of the temperature effect on the oxide layer formed on Alloy 182 in simulated PWR environment.

AU - Mendonça, Renato

AU - Bosch, Rik-Wouter

AU - Van Renterghem, Wouter

A2 - Gavrilov, Serguei

N1 - Score = 3

PY - 2014/9/8

Y1 - 2014/9/8

N2 - Ni-based alloys show a peak in SCC susceptibility at a certain temperature and hydrogen concentration. This peak is related to the electrochemical condition where the Ni to NiO transition takes place. One assumption is that the oxide layer at this condition is not properly developed and so the material is not optimal protected to SCC. Therefore the oxide layer formed on Alloy 182 is investigated as a function of the water chemistry and temperature. The main aim of this work is to correlate the behaviour and composition of the different oxide layers formed in high temperature water. Exposure tests have been performed with Alloy 182 and Ni coupons in a PWR environment as a function of temperature for a dissolved hydrogen concentration of 35 cc/kg. The temperature ranged from 300 to 345°C as in this range the Ni/NiO transition is located based on thermodynamic calculations. Post-test analysis of the formed oxide layers have been carried out by Scanning Electron Microscopy and Energy Dispersive Spectroscopy. The first results showed that there is a large difference between the low (300°C) and high (345°C) exposure temperature w.r.t. the oxide layer morphology.

AB - Ni-based alloys show a peak in SCC susceptibility at a certain temperature and hydrogen concentration. This peak is related to the electrochemical condition where the Ni to NiO transition takes place. One assumption is that the oxide layer at this condition is not properly developed and so the material is not optimal protected to SCC. Therefore the oxide layer formed on Alloy 182 is investigated as a function of the water chemistry and temperature. The main aim of this work is to correlate the behaviour and composition of the different oxide layers formed in high temperature water. Exposure tests have been performed with Alloy 182 and Ni coupons in a PWR environment as a function of temperature for a dissolved hydrogen concentration of 35 cc/kg. The temperature ranged from 300 to 345°C as in this range the Ni/NiO transition is located based on thermodynamic calculations. Post-test analysis of the formed oxide layers have been carried out by Scanning Electron Microscopy and Energy Dispersive Spectroscopy. The first results showed that there is a large difference between the low (300°C) and high (345°C) exposure temperature w.r.t. the oxide layer morphology.

KW - Ni-based alloy

KW - oxide layers

KW - PWSCC

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_137727

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_137727_2

UR - http://knowledgecentre.sckcen.be/so2/bibref/12052

M3 - In-proceedings paper

BT - EUROCORR 2014 - EUROPEAN CORROSION CONGRESS

CY - Frankfurt, Germany

T2 - EUROCORR 2014 - EUROPEAN CORROSION CONGRESS The annual event of the European Federation of Corrosion

Y2 - 8 September 2014 through 12 September 2014

ER -

ID: 365217