The Lead and LBE Corrosion Research at KAERI

摘要

KAERI has been developing the facilities needed to study the corrosion of lead-alloy. KAERI fabricated a static corrosion test facility in 2003. The static corrosion tests of HT-9, 316L and T91 have been performed at 600℃ and 650℃ since 2003. KAERI completed the construction of Pb-Bi corrosion test loop, KPAL-I (KAERI Pb-Alloy Loop I) and the first stage of Pb corrosion test loop, KPAL-II (KAERI Pb-Alloy Loop II) in 2006. The Pb-Bi loop is an isothermal loop. Although the Pb loop is designed to be operated with AT = 150℃ (T_(min) = 450℃ and T_(max) = 600℃), it is operated as an isothermal loop since only the first stage of the loop construction was completed in 2006. We will complete the second stage of the Pb loop construction in the near future. The corrosion tests were performed using KPAL-I and KPAL-II. The tested samples were 316L, T91 and HT-9 which are candidate materials for the reactor structure, a beam window of an ADS and the fuel cladding respectively. The tests were performed at temperature of 570℃. The flow velocities were measured by electromagnetic flow meter (EMF). The samples were tested up to the maximum of 450 hrs and analysed by using SEM.