MECHANISM OF INTERNAL CORROSION OF ZIRCONIUM ALLOY Zr1Nb IN FUEL ELEMENTS

Abstract

The presented ideas about kinetics of zirconium alloy dissolution under conditions of hydrodynamic mass transfer of reagents and products in the interphase layer. Modeling of the process of electrochemical corrosion of Zirconium alloys in the hydrodynamic mode allows the most reliable quantitative study of the transfer of reagents and metal products in the liquid medium and to analyze the electrochemical processes of interaction of medium components with the material of fuel elements in an atomic reactor.Therefore the purpose of researches is to establish conditions of critical kinds of electrochemical destructions which take place on external and internal surfaces of fuel elements during their operation.