Corrosion behavior of materials for coal-gasification applications. [11 References]

Conference · Thu Jan 01 04:00:00 EST 1976

OSTI ID:7231687

Natesan, K; Chopra, O K

Materials considered for application in the high-temperature multicomponent gaseous environments present in various coal-gasification processes must possess good structural integrity at elevated temperatures and inherent resistance to the corrosive atmospheres. A thermodynamic analysis was used to examine the phase stability in commercial alloys such as Type 304 stainless steel, Incoloy 800, and Inconel 671 upon exposure to gas environments anticipated in different coal-gasification processes. The analysis showed that a high chromium content in the alloy is beneficial for corrosion resistance in the environments, whereas the nickel content of the alloy limits its performance. Scanning-electron micrographs are presented for Types 304 and 310 stainless steel, Inconel X750, and Inconel 671 after exposure to complex gas environments. The results show that under oxidizing conditions the alloys can develop a protective chromium-rich oxide layer which prevents both sulfidation and carburization. However, under marginally oxidizing and reducing conditions, the alloys exhibited extensive sulfidation and carburization.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7231687
• Report Number(s): CONF-761057-3
• 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
AGGLOMERATING ASH PROCESS
ALKANES
ALLOYS
AMMONIA
BI-GAS PROCESS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE ACCEPTOR PROCESS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL GAS
COAL GASIFICATION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
GASES
GASIFICATION
HEAT RESISTING ALLOYS
HYDRIDES
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYGAS PROCESS
INCOLOY 800
INCOLOY ALLOYS
INCONEL 671
INCONEL ALLOYS
INCONEL X750
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
METHANE
NICKEL ALLOYS
NICKEL BASE ALLOYS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SNG PROCESSES
STAINLESS STEEL-304
STAINLESS STEEL-310
STAINLESS STEELS
STEELS
SULFIDES
SULFUR COMPOUNDS
SYNTHANE PROCESS
TITANIUM ALLOYS
VAPORS
WATER VAPOR