Chemical interaction of Austenitic and Ferritic Steels with B4C Powder in Liquid Sodium at 600°C

Marie Romedenne; Fabien Rouillard; Didier Hamon; Michel Tabarant; Daniel Monceau

Chemical interaction of Austenitic and Ferritic Steels with B4C Powder in Liquid Sodium at 600°C

Marie Romedenne, Fabien Rouillard, Didier Hamon, Michel Tabarant, Daniel Monceau

Advanced Nuclear Materials

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In the framework of studies on the control rods lifetime for Sodium Fast Reactor, three commercial steels were exposed to B₄C powder in liquid sodium at 600°C for durations up to 3000 h. Analyses by optical and secondary electron microscopy, electron microprobe and glow discharge optical emission spectrometry revealed the formation of borides layers at the surface of the steels and slight carburization underneath. The growth of the boride layers followed parabolic kinetics. The nature of the formed boride layers was in good agreement with thermodynamic equilibrium predicted by Thermo-Calc software. The carburization depths were much lower than the ones obtained in pure carburizing sodium at 600°C. Finally, the carbon penetration depth did not grow with time revealing possible protective character of the boride layers against carbon penetration.

Original language	English
Title of host publication	Corrosion Conference and Expo 2018
Publisher	National Assoc. of Corrosion Engineers International
ISBN (Print)	9781510864405
State	Published - 2018
Event	Corrosion Conference and Expo 2018 - Phoenix, United States Duration: Apr 15 2018 → Apr 19 2018

Publication series

Name	NACE - International Corrosion Conference Series
Volume	2018-April
ISSN (Print)	0361-4409

Conference

Conference	Corrosion Conference and Expo 2018
Country/Territory	United States
City	Phoenix
Period	04/15/18 → 04/19/18

Funding

The authors are grateful to CEA, EDF, and AREVA for funding this work.

Keywords

Boriding
Carburization
Sodium
Steels

Cite this

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title = "Chemical interaction of Austenitic and Ferritic Steels with B4C Powder in Liquid Sodium at 600°C",

abstract = "In the framework of studies on the control rods lifetime for Sodium Fast Reactor, three commercial steels were exposed to B4C powder in liquid sodium at 600°C for durations up to 3000 h. Analyses by optical and secondary electron microscopy, electron microprobe and glow discharge optical emission spectrometry revealed the formation of borides layers at the surface of the steels and slight carburization underneath. The growth of the boride layers followed parabolic kinetics. The nature of the formed boride layers was in good agreement with thermodynamic equilibrium predicted by Thermo-Calc software. The carburization depths were much lower than the ones obtained in pure carburizing sodium at 600°C. Finally, the carbon penetration depth did not grow with time revealing possible protective character of the boride layers against carbon penetration.",

keywords = "Boriding, Carburization, Sodium, Steels",

author = "Marie Romedenne and Fabien Rouillard and Didier Hamon and Michel Tabarant and Daniel Monceau",

note = "Publisher Copyright: {\textcopyright} 2018 by NACE International.; Corrosion Conference and Expo 2018 ; Conference date: 15-04-2018 Through 19-04-2018",

year = "2018",

language = "English",

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series = "NACE - International Corrosion Conference Series",

publisher = "National Assoc. of Corrosion Engineers International",

booktitle = "Corrosion Conference and Expo 2018",

}

Romedenne, M, Rouillard, F, Hamon, D, Tabarant, M & Monceau, D 2018, Chemical interaction of Austenitic and Ferritic Steels with B4C Powder in Liquid Sodium at 600°C. in Corrosion Conference and Expo 2018. NACE - International Corrosion Conference Series, vol. 2018-April, National Assoc. of Corrosion Engineers International, Corrosion Conference and Expo 2018, Phoenix, United States, 04/15/18.

Chemical interaction of Austenitic and Ferritic Steels with B4C Powder in Liquid Sodium at 600°C. / Romedenne, Marie; Rouillard, Fabien; Hamon, Didier et al.
Corrosion Conference and Expo 2018. National Assoc. of Corrosion Engineers International, 2018. (NACE - International Corrosion Conference Series; Vol. 2018-April).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Chemical interaction of Austenitic and Ferritic Steels with B4C Powder in Liquid Sodium at 600°C

AU - Romedenne, Marie

AU - Rouillard, Fabien

AU - Hamon, Didier

AU - Tabarant, Michel

AU - Monceau, Daniel

PY - 2018

Y1 - 2018

N2 - In the framework of studies on the control rods lifetime for Sodium Fast Reactor, three commercial steels were exposed to B4C powder in liquid sodium at 600°C for durations up to 3000 h. Analyses by optical and secondary electron microscopy, electron microprobe and glow discharge optical emission spectrometry revealed the formation of borides layers at the surface of the steels and slight carburization underneath. The growth of the boride layers followed parabolic kinetics. The nature of the formed boride layers was in good agreement with thermodynamic equilibrium predicted by Thermo-Calc software. The carburization depths were much lower than the ones obtained in pure carburizing sodium at 600°C. Finally, the carbon penetration depth did not grow with time revealing possible protective character of the boride layers against carbon penetration.

AB - In the framework of studies on the control rods lifetime for Sodium Fast Reactor, three commercial steels were exposed to B4C powder in liquid sodium at 600°C for durations up to 3000 h. Analyses by optical and secondary electron microscopy, electron microprobe and glow discharge optical emission spectrometry revealed the formation of borides layers at the surface of the steels and slight carburization underneath. The growth of the boride layers followed parabolic kinetics. The nature of the formed boride layers was in good agreement with thermodynamic equilibrium predicted by Thermo-Calc software. The carburization depths were much lower than the ones obtained in pure carburizing sodium at 600°C. Finally, the carbon penetration depth did not grow with time revealing possible protective character of the boride layers against carbon penetration.

KW - Boriding

KW - Carburization

KW - Sodium

KW - Steels

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M3 - Conference contribution

AN - SCOPUS:85053519980

SN - 9781510864405

T3 - NACE - International Corrosion Conference Series

BT - Corrosion Conference and Expo 2018

PB - National Assoc. of Corrosion Engineers International

T2 - Corrosion Conference and Expo 2018

Y2 - 15 April 2018 through 19 April 2018

ER -

Chemical interaction of Austenitic and Ferritic Steels with B4C Powder in Liquid Sodium at 600°C

Abstract

Publication series

Conference

Funding

Keywords

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