Materials Science Division coal technology eighth quarterly report, July--September 1976. [Gasification plant materials]
The analysis of ceramic refractories for slagging gasifiers from Run 2, a 500-h test with basic slag, is continuing. Wear measurements were performed on the magnesium zirconate-coated metal specimens that survived the 100-h test of hot, high-velocity char particles at Solar, Inc. These coatings were not uniformly thick, but they did resist the corrosive and erosive attack. The in-situ erosion studies have continued with the development of a convectively-cooled, ultrasonic waveguide and an attachment method that permits fastening of the waveguide directly to existing components. Experimental evaluation of the corrosion behavior of commercial iron- and nickel-base alloys in multicomponent gas mixtures that include CO, CO/sub 2/, H/sub 2/, CH/sub 4/, and H/sub 2/S is in progress. Oxygen-sulfur thermochemical diagrams were used as a basis in the selection of complex gas environments for the experimental program. Scanning-electron-microscope photographs of the cross sections of different alloys after exposure to gas environments with various oxygen, sulfur, and carbon potentials show that the corrosion behavior of commercial alloys in multicomponent gas environments in complex and fundamental processes such as oxidation, sulfidation, and carburization can occur simultaneously with different advancing reaction fronts. Additional failure analysis results are presented.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 7119909
- Report Number(s):
- ANL-76-125
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
42 ENGINEERING
COAL GASIFICATION PLANTS
REFRACTORIES
CORROSION RESISTANCE
TESTING
PROTECTIVE COATINGS
ABRASION
BI-GAS PROCESS
CYCLONE SEPARATORS
EROSION
ULTRASONIC TESTING
IRON BASE ALLOYS
CORROSION
NICKEL BASE ALLOYS
ATMOSPHERES
CORROSIVE EFFECTS
INDUSTRIAL RADIOGRAPHY
SLAGS
TEMPERATURE GRADIENTS
ACOUSTIC EMISSION TESTING
INFRARED SURVEYS
NONDESTRUCTIVE TESTING
CARBURIZATION
CHEMICAL REACTION KINETICS
ELECTRON MICROSCOPY
INCONEL X750
OXIDATION
STAINLESS STEEL-304
STAINLESS STEEL-310
SULFIDES
THERMODYNAMICS
FAILURES
SYNTHANE PROCESS
ACOUSTIC TESTING
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL GASIFICATION
COATINGS
CONCENTRATORS
CORROSION RESISTANT ALLOYS
EQUIPMENT
GASIFICATION
GEOPHYSICAL SURVEYS
HARDENING
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL ALLOYS
INDUSTRIAL PLANTS
INERTIAL SEPARATORS
IRON ALLOYS
KINETICS
MATERIALS
MATERIALS TESTING
MICROSCOPY
NICKEL ALLOYS
POLLUTION CONTROL EQUIPMENT
REACTION KINETICS
STAINLESS STEELS
STEELS
SULFUR COMPOUNDS
SURFACE HARDENING
SURFACE TREATMENTS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
THERMOCHEMICAL PROCESSES
TITANIUM ALLOYS
010404* - Coal
Lignite
& Peat- Gasification
360105 - Metals & Alloys- Corrosion & Erosion
360205 - Ceramics
Cermets
& Refractories- Corrosion & Erosion
420500 - Engineering- Materials Testing