The Transport of Radioactive Corrosion Products in High-Temperature Water II. The Activation of Isothermal Steel Surfaces

1976 ◽  
Vol 59 (4) ◽  
pp. 406-426 ◽  
Author(s):  
D. H. Lister
Keyword(s):  
High Temperature ◽  
Corrosion Products ◽  
High Temperature Water ◽  
Steel Surfaces ◽  
Temperature Water

Pitting Corrosion of Inconel 600 in High-Temperature Water Containing CuCl2

CORROSION ◽  
1985 ◽  
Vol 41 (11) ◽  
pp. 665-675 ◽  
Author(s):  
J. R. Park ◽  
Z. Szklarska-Smialowska
Keyword(s):  
High Temperature ◽  
Pitting Corrosion ◽  
Chloride Ion ◽  
Open Circuit ◽  
Cupric Chloride ◽  
Corrosion Products ◽  
Chloride Solutions ◽  
Inconel 600 ◽  
High Temperature Water ◽  
Temperature Water

Abstract Pitting corrosion of Inconel 600 was studied in aqueous sodium and cupric chloride solutions at 60 and 280 C. The pit nucleation potential, Enp, was evaluated in two different concentrations of sodium chloride. Enp decreased with increasing concentrations of the chloride ion and with temperature. On specimen surfaces exposed to cupric chloride solutions, pitting occurred at open circuit potentials nearly equal to or higher than the Enp determined by anodic polarization in 0.01 M NaCl solution. The number and size of the pits increased with increasing concentrations of cupric chloride and dissolved oxygen. On specimens partly covered with polytetrafluorethylene (PTFE) tape (i.e., in the presence of artificial crevices), pitting occurred more easily at low concentrations of CuCl2 (≤ 20 ppm CuCl2 in deaerated solutions at 280 C). Tubes covered with oxide films that formed during the operation of model boilers exhibited greater pitting resistance than tubes with clean surfaces at 280 C, but less resistance at 60 C. Corrosion products contained in the pits were enriched in chromium with small amounts of copper, sulfur, and chlorine. The composition of corrosion products covering the pits was similar to that in the pits, but with the additional enrichment of iron. Presumably, sulfur present in Inconel 600 as an impurity was significant in the pitting process. The probable mechanism of the processes leading to pitting of Inconel 600 tubing in high-temperature water is discussed.

In situ and ex situ characterisation of oxide films formed on strained stainless steel surfaces in high-temperature water

2006 ◽  
Vol 252 (24) ◽  
pp. 8580-8588 ◽  
Author(s):  
Yoichi Takeda ◽  
Tetsuo Shoji ◽  
Martin Bojinov ◽  
Petri Kinnunen ◽  
Timo Saario
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Oxide Films ◽  
Ex Situ ◽  
High Temperature Water ◽  
Steel Surfaces ◽  
Temperature Water
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