Different types of organic additives (N-containing additives, S-containing additives, an acetylenic derivative) were tested as inhibitors for the intergranular corrosion (IGC) of a sensitized AISI 304 stainless steel (SS) in 1 N sulphamic acid solution at 70 °C. As in the case with sulphuric acid, the only organic substances that could inhibit IGC were those molecules containing a sulphur atom with one unshared lone pair. In the presence of these S-containing additives, the corrosion rate of the sensitized SS specimen is equal to that of a non-sensitized (untreated) specimen.
Inhibition of the intergranular corrosion of a sensitized stainless steel in hot, dilute sulfamic acid solutions
TRABANELLI, Giordano;FRIGNANI, Alessandro;MONTICELLI, Cecilia
1987
Abstract
Different types of organic additives (N-containing additives, S-containing additives, an acetylenic derivative) were tested as inhibitors for the intergranular corrosion (IGC) of a sensitized AISI 304 stainless steel (SS) in 1 N sulphamic acid solution at 70 °C. As in the case with sulphuric acid, the only organic substances that could inhibit IGC were those molecules containing a sulphur atom with one unshared lone pair. In the presence of these S-containing additives, the corrosion rate of the sensitized SS specimen is equal to that of a non-sensitized (untreated) specimen.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
