TY - JOUR

T1 - Schutz durch Hochgeschwindigkeits-flammspritzschichten auf dickwandigen end- und zwischenlagerbauteilen zur reduktion von reparaturen, korrosion und kosten - SHARK - Ein überblick zum abschluss des projektes

AU - Behrens, S.

AU - Hassel, T.

AU - Bach, Fr W.

AU - Steinwarz, W.

AU - Dyllong, N.

AU - Tragsdorf, I. M.

PY - 2012/4

Y1 - 2012/4

N2 - The corrosion protection of the internal space of thick-walled interim and permanent storage facility components, such as Castor® containers, are ensured nowadays by a galvanic nickel layer. The method has proved itself and protects the base material of the containers at the underwater loading in the Nuclear power station from a corrosive attack. Although, the galvanic nickel plating is a relatively time consuming method, it lasts for several days for each container, and is with a layer thickness of 1,000 μm also expensive. To develop an alternative, faster and more economical method, a BMBF research project named "-SHARK-protection by high velocity thermal spraying layers on thick-walled permanent and interim store components for the diminution of repairs, corrosion and costs" in cooperation between Siempelkamp Nukleartechnik GmbH and the Institute of Materials Science of the Leibniz University of Hanover was established to investigate the suitability of the high velocity oxy fuel spraying technology (HVOF) for the corrosion protective coating of thick-walled interim and permanent storage facility components. Since the permanent storage depot components are manufactured from cast iron with globular graphite, this material was exclusively used as a base material in this project. The evaluation of the economical features of the application of different nickel base spraying materials on cast iron substratum was in focus, as well as the scientific characterization of the coating systems with regard to the corrosion protective properties. Furthermore, the feasibility of the transfer of the laboratory results on a large industrial setup as well as a general suitability of the coating process for a required repair procedure was to be investigated. The preliminary examination program identified chromium containing spraying materials as successful. Results of the preliminary examination program have been used for investigations with the CASOIK demonstration container. The research results show that the quality of the corrosion protection with thermal spraying coatings is dependable on the process parameters. A follow-up project with the title "Qualification of corrosion protective layers thermally sprayed on thick walled container components, QUAKOS" has already started.

AB - The corrosion protection of the internal space of thick-walled interim and permanent storage facility components, such as Castor® containers, are ensured nowadays by a galvanic nickel layer. The method has proved itself and protects the base material of the containers at the underwater loading in the Nuclear power station from a corrosive attack. Although, the galvanic nickel plating is a relatively time consuming method, it lasts for several days for each container, and is with a layer thickness of 1,000 μm also expensive. To develop an alternative, faster and more economical method, a BMBF research project named "-SHARK-protection by high velocity thermal spraying layers on thick-walled permanent and interim store components for the diminution of repairs, corrosion and costs" in cooperation between Siempelkamp Nukleartechnik GmbH and the Institute of Materials Science of the Leibniz University of Hanover was established to investigate the suitability of the high velocity oxy fuel spraying technology (HVOF) for the corrosion protective coating of thick-walled interim and permanent storage facility components. Since the permanent storage depot components are manufactured from cast iron with globular graphite, this material was exclusively used as a base material in this project. The evaluation of the economical features of the application of different nickel base spraying materials on cast iron substratum was in focus, as well as the scientific characterization of the coating systems with regard to the corrosion protective properties. Furthermore, the feasibility of the transfer of the laboratory results on a large industrial setup as well as a general suitability of the coating process for a required repair procedure was to be investigated. The preliminary examination program identified chromium containing spraying materials as successful. Results of the preliminary examination program have been used for investigations with the CASOIK demonstration container. The research results show that the quality of the corrosion protection with thermal spraying coatings is dependable on the process parameters. A follow-up project with the title "Qualification of corrosion protective layers thermally sprayed on thick walled container components, QUAKOS" has already started.

UR - http://www.scopus.com/inward/record.url?scp=84879123069&partnerID=8YFLogxK

M3 - Artikel

AN - SCOPUS:84879123069

VL - 57

SP - 250

EP - 254

JO - ATW - Internationale Zeitschrift fur Kernenergie

JF - ATW - Internationale Zeitschrift fur Kernenergie

SN - 1431-5254

IS - 4

ER -