Corrosion data for uncooled alloys in the bed of an atmospheric fluidized-bed boiler
Journal Article
·
· Mater. Compon. Fossil Energy Appl.; (United States)
OSTI ID:6266833
The major conclusions drawn from the results of this particular corrosion test were that: above the coal feed ports, Alloys 304, 310, and 800 were the most resistant. However, Alloys 800 and 310 were subject to catastrophic attack at points of contact with Alloy 600. All three alloys formed subscale sulfides; in oxidizing zones away from the coal feed ports, only Inconel 671 suffered especially rapid attack. The lower chromium (16 to 19%) alloy specimens - C276, 347, 304, 18SR, and 430 - suffered some internal sulfidation, and both the 304 and 310 rods beneath the specimen probe suffered rapid penetration; on the basis of this test alone, alloys containing more than 40% nickel should not be considered for use within the bed of FBC units. Alloys containing 20 to 40% nickel should be evaluated very carefully, giving consideration to possible occurrence of rapid attack under low oxygen conditions and in crevice areas; austenitic stainless steels appear to be promising candidates for uncooled, in-bed applications. Extended testing (2,000 to 10,000 hour) of these alloys is needed.
- OSTI ID:
- 6266833
- Journal Information:
- Mater. Compon. Fossil Energy Appl.; (United States), Journal Name: Mater. Compon. Fossil Energy Appl.; (United States) Vol. 23; ISSN MCFAD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALLOYS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL
COMBUSTION
COMBUSTORS
CORROSION
CORROSION RESISTANT ALLOYS
ENERGY SOURCES
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
HASTELLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INCONEL 600
INCONEL 671
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
OXIDATION
STAINLESS STEEL-304
STAINLESS STEEL-309
STAINLESS STEEL-310
STAINLESS STEEL-347
STAINLESS STEEL-430
STAINLESS STEEL-446
STAINLESS STEELS
STEELS
SULFIDATION
TESTING
THERMOCHEMICAL PROCESSES
360105 -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALLOYS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL
COMBUSTION
COMBUSTORS
CORROSION
CORROSION RESISTANT ALLOYS
ENERGY SOURCES
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
HASTELLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INCONEL 600
INCONEL 671
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
OXIDATION
STAINLESS STEEL-304
STAINLESS STEEL-309
STAINLESS STEEL-310
STAINLESS STEEL-347
STAINLESS STEEL-430
STAINLESS STEEL-446
STAINLESS STEELS
STEELS
SULFIDATION
TESTING
THERMOCHEMICAL PROCESSES