The influence of Si-additions on the corrosion resistance of 12% Cr alloys exposed in a reducing-sulphidising atmosphere
The potential offered by SiO(2)-rich scales in improving resistance to sulphidation attack in low oxygen-containing environments has been evaluated using a series of model 12% Cr and 12% Ni alloys with Si additions ranging from 1.5% to 4%. Tests have been carried out at 450 C in a non-equilibrated CO-rich gas of the type found in a dry-feed entrained slagging gasifier for durations of up to 2000 hours. The significant benefit conferred by the higher levels of Si in these steels is shown by both weight change measurements and surface and cross-sectional microstructural analysis.
Bibliographic Reference: Paper presented: 13th International Corrosion Congress, Melbourne (AU); November 24-29, 1996
Availability: Available from (1) as Paper EN 40304 ORA
Record Number: 199710261 / Last updated on: 1997-04-01
Original language: en
Available languages: en