The corrosion behaviors of low carbon steel, a kind of materials used in making metal container sealing high–level radioactive waste, in three deaerated bicarbonate solutions simulated the ground water, 0.1 mol/L NaHCO3 solution, 0.1 mol/L NaHCO3+0.1 mol/L Na2SO4 solution and 0.1 mol/L NaHCO3+0.1 mol/L NaCl solution, were examined. The results in potential evolution revealed that the low carbon steel moved up to the passive state in 0.1 mol/L NaHCO3 solution while moved up to the re–active state in the other solutions. SEM observations showed that the low carbon steel was not corroded in 0.1 mol/L NaHCO3 solution, while homogeneous corrosion occurred in 0.1 mol/L NaHCO3+0.1 mol/L Na2SO4 solution and local corrosion in the third solution. XRD analyses illustrated that the corrosion products are composed of Fe3O4 and α–FeOOH.
DONG Jun-Hua
,
YANG Jing-Feng
,
KE Wei
. EFFECTS OF SO42− AND Cl− ON ACTIVE/PASSIVE CORROSION BEHAVIORS OF LOW CARBON STEEL IN DEAERATED BICARBONATE SOLUTION[J]. Acta Metall Sin, 2011
, 47(10)
: 1321
-1326
.
DOI: 10.3724/SP.J.1037.2011.00134
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