Interaction of Metal Melt with Zirconium Dioxide Refractories in an External Trap

The results of an investigation of the interaction of metal melt of reactor materials with zirconium dioxide refractories (ceramic, concrete) in an atmosphere with various oxygen contents at temperatures up to 2600 K are presented. The experiments showed that the melt Zr + 2.5% Nb at 2273 K does not...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2001-07, Vol.91 (1), p.543-550
Main Authors: Mineev, V N, Akopov, F A, Onufriev, S V, Akopyan, A A, Barykin, B M, Borovkova, L B, Borodina, T I, Val'yano, G E, Vlasov, A S, Lukin, E S, Funtikov, A I, Chernyshov, G P, Bel'maz, N S, Traktuev, O M
Format: Article
Language:English
Subjects:
Ceramics
Concrete
Concretes
Dissolution
Erosion
Iron and steel making
Low carbon steels
Melting point
Melts
Reactors
Refractories
Steels
Zirconium
Zirconium dioxide
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Summary:The results of an investigation of the interaction of metal melt of reactor materials with zirconium dioxide refractories (ceramic, concrete) in an atmosphere with various oxygen contents at temperatures up to 2600 K are presented. The experiments showed that the melt Zr + 2.5% Nb at 2273 K does not give rise to erosion of the ceramic; at 2500-2600 K, it permeates and dissolves the ceramic. Erosion of concrete starts at the melting point of the alloy. A melt of reactor steel does not interact with refractories. Under certain conditions, capillary permeation of steel into refractories occurs. At temperatures above 2500 K, a steel-20% Zr melt gives rise to erosion of zirconium dioxide concrete. The results are used to analyze the operation of a refractory protective layer of an EPR trap.[PUBLICATION ABSTRACT]
ISSN:1063-4258
1573-8205
DOI:10.1023/A:1012434504022