Investigation of coatings, applied by PVD, for the corrosion protection of materials in supercritical water

Rudi Van Nieuwenhove; Juraj Balak; Aki Toivonen; Sami Penttilä; Ulla Ehrnstén

Investigation of coatings, applied by PVD, for the corrosion protection of materials in supercritical water

Rudi Van Nieuwenhove, Juraj Balak, Aki Toivonen, Sami Penttilä, Ulla Ehrnstén

Research output: Contribution to conference › Conference article › Scientific

Abstract

Plasma coatings, applied by physical vapour deposition, as well as plasma surface treatments could find interesting applications in the nuclear field, both for existing types of reactors as well as for generation IV reactors (such as the supercritical water reactor).
A large variety of industrially available coatings exists. Among these, the following coatings (PVD) were investigated: TiAlN, CrN and ZrO2. Small coated samples (AISI 316L and Inconel 600) were exposed to supercritical water (at 650 °C, 250 bar) during about 1000 h at an oxygen content of 150 ppb.
Whereas the performance of the TiAlN and the ZrO2 coatings was not satisfactory, the CrN coating was found to provide a stable and protective corrosion barrier.
The CrN coated Inconel 600 base metal shows that chromium creates approximately 0.5 µm wide stable natural passivation oxide layer which protects the surface from further corrosion attack during exposure to SCW.
Weight gain measurements on the CrN coated samples were performed as well but did not show any significant change after exposure.

Original language	English
Number of pages	12
Publication status	Published - 2013
MoE publication type	Not Eligible
Event	6th International Symposium on Supercritical Water-Cooled Reactors ISSCWR-6 - Shenzhen, Guangdong, China Duration: 3 Mar 2013 → 7 Mar 2013

Conference

Conference	6th International Symposium on Supercritical Water-Cooled Reactors ISSCWR-6
Abbreviated title	ISSCWR-6
Country	China
City	Shenzhen, Guangdong
Period	3/03/13 → 7/03/13

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@conference{dad5ccba78374698867acb66bc4f51f2,

title = "Investigation of coatings, applied by PVD, for the corrosion protection of materials in supercritical water",

abstract = "Plasma coatings, applied by physical vapour deposition, as well as plasma surface treatments could find interesting applications in the nuclear field, both for existing types of reactors as well as for generation IV reactors (such as the supercritical water reactor). A large variety of industrially available coatings exists. Among these, the following coatings (PVD) were investigated: TiAlN, CrN and ZrO2. Small coated samples (AISI 316L and Inconel 600) were exposed to supercritical water (at 650 °C, 250 bar) during about 1000 h at an oxygen content of 150 ppb. Whereas the performance of the TiAlN and the ZrO2 coatings was not satisfactory, the CrN coating was found to provide a stable and protective corrosion barrier. The CrN coated Inconel 600 base metal shows that chromium creates approximately 0.5 µm wide stable natural passivation oxide layer which protects the surface from further corrosion attack during exposure to SCW. Weight gain measurements on the CrN coated samples were performed as well but did not show any significant change after exposure.",

author = "{Van Nieuwenhove}, Rudi and Juraj Balak and Aki Toivonen and Sami Penttil{\"a} and Ulla Ehrnst{\'e}n",

year = "2013",

language = "English",

note = "6th International Symposium on Supercritical Water-Cooled Reactors ISSCWR-6, ISSCWR-6 ; Conference date: 03-03-2013 Through 07-03-2013",

}

Investigation of coatings, applied by PVD, for the corrosion protection of materials in supercritical water. / Van Nieuwenhove, Rudi; Balak, Juraj; Toivonen, Aki ; Penttilä, Sami ; Ehrnstén, Ulla.

2013. Paper presented at 6th International Symposium on Supercritical Water-Cooled Reactors ISSCWR-6, Shenzhen, Guangdong, China.

Research output: Contribution to conference › Conference article › Scientific

TY - CONF

T1 - Investigation of coatings, applied by PVD, for the corrosion protection of materials in supercritical water

AU - Van Nieuwenhove, Rudi

AU - Balak, Juraj

AU - Toivonen, Aki

AU - Penttilä, Sami

AU - Ehrnstén, Ulla

PY - 2013

Y1 - 2013

N2 - Plasma coatings, applied by physical vapour deposition, as well as plasma surface treatments could find interesting applications in the nuclear field, both for existing types of reactors as well as for generation IV reactors (such as the supercritical water reactor). A large variety of industrially available coatings exists. Among these, the following coatings (PVD) were investigated: TiAlN, CrN and ZrO2. Small coated samples (AISI 316L and Inconel 600) were exposed to supercritical water (at 650 °C, 250 bar) during about 1000 h at an oxygen content of 150 ppb. Whereas the performance of the TiAlN and the ZrO2 coatings was not satisfactory, the CrN coating was found to provide a stable and protective corrosion barrier. The CrN coated Inconel 600 base metal shows that chromium creates approximately 0.5 µm wide stable natural passivation oxide layer which protects the surface from further corrosion attack during exposure to SCW. Weight gain measurements on the CrN coated samples were performed as well but did not show any significant change after exposure.

AB - Plasma coatings, applied by physical vapour deposition, as well as plasma surface treatments could find interesting applications in the nuclear field, both for existing types of reactors as well as for generation IV reactors (such as the supercritical water reactor). A large variety of industrially available coatings exists. Among these, the following coatings (PVD) were investigated: TiAlN, CrN and ZrO2. Small coated samples (AISI 316L and Inconel 600) were exposed to supercritical water (at 650 °C, 250 bar) during about 1000 h at an oxygen content of 150 ppb. Whereas the performance of the TiAlN and the ZrO2 coatings was not satisfactory, the CrN coating was found to provide a stable and protective corrosion barrier. The CrN coated Inconel 600 base metal shows that chromium creates approximately 0.5 µm wide stable natural passivation oxide layer which protects the surface from further corrosion attack during exposure to SCW. Weight gain measurements on the CrN coated samples were performed as well but did not show any significant change after exposure.

M3 - Conference article

T2 - 6th International Symposium on Supercritical Water-Cooled Reactors ISSCWR-6

Y2 - 3 March 2013 through 7 March 2013

ER -