Hot corrosion/erosion testing of materials for applications for advanced power conversion systems using coal-derived fuels. Fireside II. Evaluation of turbine materials for use in a coal-fired fluidized bed combustion environment. Task II. Final report
This report summarizes the results of the General Electric Fireside Corrosion Task II Program. This program was designed to evaluate the erosion/corrosion behavior of gas turbine nozzle guide vane and rotor blade materials in both simulated and actual pressurized fluidized bed combustor (PFBC) environments. Simulation testing included exposing disc-shaped specimens in atmospheric pressure small burner rig test stands operated at 1600/sup 0/F (871/sup 0/C) for periods up to 1300 hours. PFBC evaluation testing consisted of exposing airfoil shaped specimens to the efflux from a PFBC in a turbine test section installed in the Exxon PFBC Miniplant facility at Linden, N.J. Candidate gas turbine materials included three cast vane and blade base alloys, FSX-414, IN-738, and U-700, and one protective coating system, platinum-chromium-aluminide (RT-22). Small burner rig testing consistently showed the nickel-base alloys U-700 and IN-738 most susceptible to corrosion/sulfidation, followed by the cobalt-base alloy FSX-414; the RT-22 coating on IN-738 was most resistant to hot corrosion attack. Parts life estimates have been made for the nickel and cobalt-base alloys based on corrosion rates determined from the PFBC testing.
- Research Organization:
- General Electric Co., Schenectady, NY (USA). Energy Systems Programs Dept.
- DOE Contract Number:
- AC01-76ET10547
- OSTI ID:
- 6872345
- Report Number(s):
- FE-2326-41
- Country of Publication:
- United States
- Language:
- English
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20 FOSSIL-FUELED POWER PLANTS
36 MATERIALS SCIENCE
01 COAL, LIGNITE, AND PEAT
COMBUSTION PRODUCTS
CORROSIVE EFFECTS
GAS TURBINES
MATERIALS TESTING
ALKALI METAL COMPOUNDS
CLADDING
COAL
COBALT BASE ALLOYS
COMBINED-CYCLE POWER PLANTS
CORROSION
EROSION
EXPERIMENTAL DATA
FLUIDIZED-BED COMBUSTION
INCONEL 738
METALLOGRAPHY
NICKEL BASE ALLOYS
NOZZLES
PROTECTIVE COATINGS
SULFIDATION
TEST FACILITIES
TURBINE BLADES
ALLOYS
ALUMINIUM ALLOYS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COATINGS
COBALT ALLOYS
COMBUSTION
DATA
DEPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INCONEL ALLOYS
INFORMATION
MACHINERY
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NUMERICAL DATA
OXIDATION
POWER PLANTS
SURFACE COATING
TANTALUM ALLOYS
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TITANIUM ALLOYS
TUNGSTEN ALLOYS
TURBINES
TURBOMACHINERY
421000* - Engineering- Combustion Systems
200104 - Fossil-Fueled Power Plants- Components
360105 - Metals & Alloys- Corrosion & Erosion
014000 - Coal
Lignite
& Peat- Combustion