Electrochemical methods of determining the susceptibility to localized corrosion in hardfacing materials exposed to decontaminating solutions for a liquid metal fast breeder reactor
Creators
- 1. State Research Inst. for the Protection of Materials 'G.V. Akimov', Prague (Czechoslovakia)
- 2. Institute of Chemistry and Technology, Prague (Czechoslovakia)
Description
Agents commonly used as decontaminating solutions for liquid metal cooled fast breeder reactors include nitric acid and potassium permanganate (solution No 1) in combination with oxalic acid (solution No 2). Overlayed or sprayed hardfacing alloys used for the valves and accessories of fast breeder reactors are less resistant to localized corrosion in these solutions and are generally inferior to AISI 316L stainless steel which is the substrate for the hardfacing. The corrosion mechanism acting on these alloys when exposed to the No 1 and No 2 decontaminating solutions makes it possible to apply electrochemical techniques to ascertain the susceptibility to localized attack and to rapidly screen the degree of resistance in these environments. (orig.)
Abstract (German)
Zu den laufend verwendeten Dekontaminierloesungen fuer mit Fluessigmetall gekuehlte Schnelle Brueter gehoeren Loesungen von Salpetersaeure und Kaliumpermanganat (Loesung Nr. 1), zusammen mit Oxalsaeure (Loesung Nr. 2). Aufgeschweisste oder aufgespritzte Auftragslegierungen, die fuer Ventile und anderes Zubehoer von Schnellen Bruetern verwendet werden, sind gegen diese Loesungen im allgemeinen weniger bestaendig als der als Substrat verwendete Stahl AISI 316L. Der Korrosionsmechanismus dieser Legierungen in den beiden Loesungen kann mit Hilfe von elektrochemischen Techniken geklaert werden, so dass es moeglich ist, die Anfaelligkeit fuer oertlichen Angriff zu beurteilen und die Widerstandsfaehigkeit der Legierungen in diesen Medien schnell zu ermitteln. (orig.)Additional details
Additional titles
- Augmented title (English)
- 1. Wallex 50, Stellite SF-20, Colmonoy 5,6,40,55,56; 2. WC based cermets; 3. Cr17Ni5MoSnSiNb, Celsit V-FD, Real 096/1
Publishing Information
- Journal Title
- Werkstoffe und Korrosion
- Journal Volume
- 41
- Journal Issue
- 9
- Series
- Werkst. Korros.
- Journal Page Range
- 514-518
- ISSN
- 0043-2822
- CODEN
- WSKRA
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 22002230
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S36: MATERIALS SCIENCE; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- CERMETS; COBALT BASE ALLOYS; COLMONOY; CORROSION RESISTANCE; DECONTAMINATION; ELECTROCHEMISTRY; LMFBR TYPE REACTORS; MEASURING METHODS; NITRIC ACID; OXALIC ACID; PROTECTIVE COATINGS; REACTOR COMPONENTS; STABILITY; STELLITE; TUNGSTEN CARBIDES; VALVES
- Descriptors DEC
- ALLOYS; BORON ALLOYS; BREEDER REACTORS; CARBIDES; CARBON COMPOUNDS; CARBOXYLIC ACIDS; CHROMIUM ALLOYS; CLEANING; COATINGS; COBALT ALLOYS; COMPOSITE MATERIALS; CONTROL EQUIPMENT; CORROSION RESISTANT ALLOYS; DICARBOXYLIC ACIDS; EPITHERMAL REACTORS; EQUIPMENT; FAST REACTORS; FBR TYPE REACTORS; FLOW REGULATORS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; IRON ALLOYS; LIQUID METAL COOLED REACTORS; MATERIALS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NITROGEN COMPOUNDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; REACTORS; SILICON ALLOYS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS