Oxidation/sulfidation behavior of Fe-Cr alloys: A reactive-element effect

Conference · Wed Apr 01 04:00:00 EST 1992

OSTI ID:5028587

Natesan, K; Park, J H

Corrosion resistance of a number of structural alloys in high-temperature environments is achieved by the formation of a continuous chromium oxide scale. Research on high-temperature corrosion of structural alloys has been in progress to reduce the rate of oxidation, improve the adhesion of oxide scale to the substrate alloy, and to stabilize the oxide scale against other corrosive agents such as sulfur, chlorine, alkalies, and ash/sorbent deposits. Extensive research is being conducted at Argonne National Laboratory to (1) evaluate mechanisms of oxidation, sulfidation, and break-away corrosion of chromia- and alumina-forming alloys exposed to mixed-gas atmospheres that span a wide range of oxygen, sulfur, and chlorine activities typical of combustion and gasification systems; (2) develop an understanding of the role of several microalloy constituents (e.g., Zr, Nb, Y, Ce, V) in oxidation/sulfidation processes and scale breakdown; (3) characterize the physical, chemical and mechanical properties of surface scales that are resistant to sulfidation attack; and (4) evaluate the role of deposits, such as alkali sulfates, alkali chlorides, ash, and sulfur sorbents, in the corrosion behavior or metallic alloys, selected coatings, and ceramic materials.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5028587
• Report Number(s): ANL/CP-75787; CONF-9205123--7; ON: DE92016172
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ATMOSPHERES
CERIUM ADDITIONS
CERIUM ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
CONTROLLED ATMOSPHERES
CORROSION
CORROSION RESISTANCE
IRON ALLOYS
IRON BASE ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SCALING
TRANSITION ELEMENT COMPOUNDS
VANADIUM ADDITIONS
VANADIUM ALLOYS
YTTRIUM ADDITIONS
YTTRIUM ALLOYS
ZIRCONIUM ADDITIONS
ZIRCONIUM ALLOYS