As the supplier of alloy castings for high-temperature service, the high-alloy foundry industry has had a vested interest in the use of alloys to resist various types of high-temperature corrosion, including oxidation sulfidation, and carburization. This interest has been manifested by extensive research on high-temperature corrosion dating back to the 1930's. Most of this research has been conducted under the sponsorship of the Alloy Casting Institute (ACI) at Battelle Memorial Institute and pertains principally to oxidation and attack by various flue gas environments. These studies have been reported in detail in the literature.(1, 2) A number of studies on carburization of cast heat-resistant alloys also has been included in this broad research on high-temperature corrosion. In contrast to the work on oxidation and flue gas corrosion, the various investigations of carburization conducted by the Alloy Casting Institute have not been published; yet results of considerable interest and benefit to industry were obtained from this research.

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