To those who are familiar with the subject, corrosion is a natural occurring process that will continue,
provided that the necessary prerequisites of thermodynamics – that a product is able to form, and
kinetics – that there is time enough for this to happen, are satisfied. High temperature corrosion follows
the same rules compounded by the fact that reaction rates are higher, internal penetration into the
metal can be extensive, phase changes can occur within the metal, temperature cycling can affect
scale adhesion and contribute to thermal fatigue, and the products that form may disappear – as can
the material if due diligence is not involved.
This paper briefly reviews high-temperature corrosion, summarizes the anticipated performance of
selected high-temperature materials, and addresses aspects of reliability that influence the potential for
failures that could have been avoided or prevented by better awareness.
The intentions of this paper are simple. First, to provide a summary of the subject for those who are
less aware. Second, to avert the old maxim that “history will repeat itself.” Third, to demonstrate that
the challenge of high-temperature corrosion can often be overcome with improved and effective
communication between those who plan (designers), those who provide (material suppliers), those who
use (operators), and those who keep things going (maintenance personnel).
Key words: High-temperature corrosion, heat-resistant alloys, iron-, nickel- and cobalt-alloys, ceramics,
design, reliability, data and information exchange, communication.