Coal Technology Program. Progress report for December 1977

Technical Report · Wed Feb 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/5061400· OSTI ID:5061400

In the pressure vessel and piping materials work, the report, ''Assessment of Materials Technology for Gasifer and Reaction Pressure Vessels and Piping for Second Generation Commercial Coal Conversion Systems'' (ORNL-5238), has been submitted for publication and distribution. Impact and tensile teting is under way on 2/sup 1///sub 4/ cr-1 Mo steel which has received a simulated quench, temper, and postweld heat treatment. Two topical reports on coating inspection have gone to reproduction. CoCrAlY material has been received and specimen production has been initiated. We are streamlining our methods for eddy-current design and have developed a new method for material characterization. A penetrant procedure for cermet coatings has been optimized and some interesting observations of coating behavior were made during the tensile cracking of a cermet specimen. In the welding and cladding program, experimental gas metal-arc weld-clad depits of type 320 Cb stainless steel have been made on an intermediate layer of Inconel 82 (primary substrate material is steel). Metallographic and micoprobe examination of tubes from the 1500-hr FluiDyne AFBC fireside corrosion test showed mild oxidation on both the ID and OD, no indication of sulfidation attack, and very slight intergranula corrosion. Examination of various valve components and air distributor plates from operating plants is under way in the failure analysis work. (LTN)

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5061400
• Report Number(s): ORNL/TM-6262
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
013000 -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360100 -- Metals & Alloys
ALKALI METALS
ALLOYS
BENCH-SCALE EXPERIMENTS
BURNERS
CARBONACEOUS MATERIALS
CHARPY TEST
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CLADDING
COAL
COAL GASIFICATION
COAL LIQUEFACTION
COAL LIQUIDS
COAL PREPARATION
COATINGS
COMBUSTORS
COMMINUTION
CONCENTRATORS
CONTAINERS
CONTROL EQUIPMENT
DECOMPOSITION
DEPOSITION
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FABRICATION
FAILURE MODE ANALYSIS
FLOW REGULATORS
FLUIDIZED-BED COMBUSTORS
FLUIDS
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL GAS
FUEL SYSTEMS
FUELS
GAS FUELS
GASES
GASIFICATION
HEAT EXCHANGERS
HOT GAS CLEANUP
INSPECTION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LIQUEFACTION
MAGNETIC SEPARATORS
METALLOGRAPHY
METALS
PIPES
PRESSURE VESSELS
PROTECTIVE COATINGS
PURIFICATION
STEELS
SURFACE COATING
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TEST FACILITIES
TESTING
TOPPING CYCLES
TUBES
VALVES
WELDING
WORKING FLUIDS
YIELDS