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An investigation was carried out into the corrosion behaviour of a range of Fe-Cr-Ni alloys and several recently developed advanced alloys in H(2)-7%CO-1.5%H(2)O-0.6%H(2)S at 700 C (1292 F). Gravimetric data were generated for periods of up to 1000 hours and analyses of corrosion products were performed using X-ray diffraction, scanning electron microscopy with energy dispersive analyser and optical microscopy. Both kinetic and mechanistic aspects of the corrosion reactions for the various alloys are discussed. The influence of geometrical features such as corners and edges in promoting the breakdown of protective scales is also highlighted.

Additional information

Authors: NORTON J F, JRC Petten (NL);HODGE F G, Haynes International Inc., Kokomo, Indiana (US);LAI G Y, Haynes International Inc., Kokomo, Indiana (US)
Bibliographic Reference: Paper presented: High Temperature Materials for Power Engineering, Liège (BE), September 24-27, 1990
Availability: Available from (1) as Paper EN 35432 ORA
Record Number: 199011069 / Last updated on: 1994-12-01
Original language: en
Available languages: en