Published April 1994 | Version v1
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Material interactions during severe LWR accidents. Summary of separate-effects test results

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Description

The results of separate-effects tests performed at KfK and at JAERI on 'low-temperature' physico-chemical material interactions have been critically reviewed. The range of 'low-temperature' material interactions spans between 1200 K and 1690 K, the melting temperatures of stainless steel and Inconel respectively. The following material interaction couples have been examined and compared with data from literature: Ag/Zircaloy, (Ag, In, Cd)/Zircaloy, stainless steel/Zircaloy, Inconel 718/Zircaloy, B4C/Zircaloy and B4C/stainless steel. In addition the experimental procedures and the results have been compared. The reaction kinetics generally obey parabolic rate laws indicating that the basic process is a diffusion controlled. The temperature dependence of the reaction rates can be described by Arrhenius equations. (orig./MM)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Die Ergebnisse von Einzeleffektuntersuchungen von physikalisch-chemischen 'Nieder-Temperatur'-Materialwechselwirkungen, die am KfK und am JAERI durchgefuehrt wurden, sind kritisch ueberprueft worden. Der 'Nieder-Temperatur'-Bereich erstreckt sich von 1200 K bis 1690 K, der Schmelztemperatur von Edelstahl und Inconel. Die folgenden Materialkombinationen wurden untersucht und mit Literaturwerten verglichen: Ag/Zircaloy, (Ag, In, Cd)/Zircaloy, Edelstahl/Zircaloy, Inconel 718/Zircaloy, B4C/Zircaloy and B4C/Edelstahl. Ferner wurden die experimentellen Methoden gegenuebergestellt. Die Reaktionen verlaufen nach einem parabolischen Zeitgesetz, ein Hinweis, dass es sich um Diffusionsprozesse handelt. Die Temperaturabhaengigkeit der Reaktionsraten kann durch eine Arrhenius Gleichung beschrieben werden. (orig./MM)

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Additional details

Publishing Information

Imprint Pagination
76 p.
ISSN
0303-4003
Report number
KFK--5125

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
26001925
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
BORON CARBIDES; CADMIUM; CHEMICAL REACTION KINETICS; CHEMICAL REACTIONS; CONTROL ELEMENTS; INCONEL ALLOYS; INDIUM; MELTDOWN; REACTOR SAFETY EXPERIMENTS; REVIEWS; SILVER; STAINLESS STEELS; TEMPERATURE RANGE 1000-4000 K; ZIRCALOY
Descriptors DEC
ACCIDENTS; ALLOYS; BORON COMPOUNDS; CARBIDES; CARBON ADDITIONS; CARBON COMPOUNDS; DOCUMENT TYPES; ELEMENTS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; KINETICS; METALS; NICKEL ALLOYS; NICKEL BASE ALLOYS; REACTION KINETICS; REACTOR ACCIDENTS; REACTOR COMPONENTS; STEELS; TEMPERATURE RANGE; TRANSITION ELEMENTS; ZIRCONIUM ALLOYS; ZIRCONIUM BASE ALLOYS