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Abstract

Engineering components operating at high temperatures often suffer corrosion in the service environment leading to a loss of load-bearing cross-section with a consequent reduction in plant performance and efficiency. A hot-stage microscope has therefore been specially adapted to enable in situ observations to be made during high temperature corrosion experiments using aggressive gas mixtures. In this paper, a technique for high temperature nucleation and growth studies is illustrated using results obtained during the short-term exposure of alloys and ceramics to various corrosive environments. Results are presented of observations of the carburisation of Fe-Cr-Ni alloy samples exposed to a H(2)-CH(4) gas mixture at 825 C. In addition, a brief summary of the oxidation of a commercial silicon nitride exposed at temperatures of between 750 C and 1150 C is presented.

Additional information

Authors: NORTON J F, JRC Petten (NL);CANETOLI S, JRC Petten (NL);PEX P, JRC Petten (NL)
Bibliographic Reference: Paper presented: 2nd Int. Conference on Microscopy of Oxidation, Cambridge (GB), March 28-31, 1993
Availability: Available from (1) as Paper EN 37487 ORA
Record Number: 199310711 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en