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This paper presents the results of a study concerned with the performance of five candidate alloys exposed at 600 C to a non-equilibrated CO-based gas mixture, typical of that found in a dry-feed entrained slagging gasifier. The materials tested were the commercial Fe-base alloys HR 3C and MA 956, and the Ni-base alloys, HR 160 and Cronifer 45TM. The fifth material was a development alloy containing 26Cr-39Ni-Fe with 3 % V. Discontinuous kinetic measurements were made and surface and cross-sectional microstructural studies carried out on selected samples of each alloy exposed for periods of up to 2000 hours. The superior performance of the two alloys containing approximately 2.7 % Si is highlighted and contrasted with the lower corrosion resistance of the chromia-forming alloys. A detailed comparison of the mechanisms of corrosive degradation for each alloy is presented.

Additional information

Authors: NORTON J F, JRC Petten (NL);LEVI T P, JRC Petten (NL);BAKKER W T, Electric Power Research Institute, Exploratory and Applied Research, Palo Alto (US)
Bibliographic Reference: Article: Proceedings of 2nd International Conference on Heat-Resistant Materials
Record Number: 199510940 / Last updated on: 1995-08-10
Original language: en
Available languages: en