Effect of Heat Flux on the Corrosion of Aluminum by Water. Part Iv. Tests Relative to the Advanced Test Reactor and Correlation With Previous Results

Effects of pH, surface finish and thermal treatment on the corrosion of AlFeNi aluminum alloy. Characterization of oxide layers

“…Moreover, the corrosion penetration did not exceed 38 lm after 10 days under the most severe conditions at pH = 5.0 [4]. This observation was confirmed on the X-8001 alloy tested at pH = 5.0 and 6.0 for durations up to 20 days in a further study in support to the conception of the ATR fuel [7]. However, spalling of the upper oxide occurred at pH = 6.0 when the oxide thickness reached at least 50 lm resulting from higher surface temperatures (up to 293°C) and severe thermal flux (up to 630 W/cm 2 ).…”

“…Many factors can increase the solubility of the aluminum oxide in water and further decrease its passivating role. Several corrosion studies developed in dynamic conditions on aluminum alloys used in research reactors dealt with the effect of the pH of the solution on the oxide growth rate [2][3][4][5][6][7][8]. Only a few studies were reported on the effect of surface finish and thermal treatment [1,9].…”

Corrosion of the AlFeNi alloy used for the fuel cladding in the Jules Horowitz research reactor

“…Many oxide thickness prediction models [1][2][3][4][5][6] have been developed for out-of-pile data and in-pile tests and are based on empirical correlations between oxide film thicknesses and testing time. Nevertheless, their application ranges are limited to respective test conditions and can not be extrapolated.…”

BISON Theory Manual The Equations behind Nuclear F

“…According to [81,82], corrosion of aluminum in ATR follows This corrosion thickness may be used in the coolant channel model.…”