Corrosion of some superalloys in contact with coal chars in coal gasifier atmospheres

Journal Article · Sat Aug 01 00:00:00 EDT 1981 · Oxid. Met.; (United States)

DOI:https://doi.org/10.1007/BF00603744· OSTI ID:5454467

Douglass, D L; Bhide, V S; Vineberg, E

310 stainless steel, Hastelloy X, Inconel 671, Incoloy 800, Haynes 188, and FeCrAlY (GE1541 and MA956), were corroded in two chars at 1600/degree/ and 18000/degree/F. The chars, FMC and Husky, contained 2.7% and 0.9% sulfur, respectively. Various parameters were investigated, including char size, cover gas, char quantity, char replenishment period, gas composition, and the use of coatings. The corrosion process was sulfidation. An interfacial reaction was the rate-controlling step. All alloys corroded in char at least 1000 times more rapidly than in the CGA (MPC-ITTRI) environment. None will be acceptable for use in contact with char unless coatings are applied. 7 refs.

• Research Organization: Univ of Calif, Los Angeles
• OSTI ID: 5454467
• Journal Information: Oxid. Met.; (United States), Journal Name: Oxid. Met.; (United States) Vol. 16:1-2; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CHARS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL GASIFICATION
COAL GASIFICATION PLANTS
COBALT ALLOYS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
GASIFICATION
GE 2541
HASTELLOY X
HASTELLOYS
HAYNES 188 ALLOY
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
INCONEL 671
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
PYROLYSIS PRODUCTS
STAINLESS STEEL-310
STAINLESS STEELS
STEELS
SULFIDATION
THERMOCHEMICAL PROCESSES
TUNGSTEN ALLOYS
YTTRIUM ALLOYS