Development of coatings with improved corrosion resistance in sulfur-containing environments

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6211925

Natesan, K ^[1]; Johnson, R N ^[2]

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1. Argonne National Lab., IL (USA)
2. Westinghouse Hanford Co., Richland, WA (USA)

Corrosion of metallic structure materials at elevated temperatures in complex multicomponent gas environments is a potential problem in many fossil energy systems, especially those using coal as a feedstock. The use of appropriate corrosion-resistant coatings on metallic components can minimize material degradation and extend component life. In the present study, the chemical compatibility of a number of coatings is examined by exposing them to simulated oxygen/sulfur mixed-gas environments at metal temperatures of 500 and 650{degree}C. Coatings were developed via pack cementation and electrospark deposition techniques on T22 and T91 substrates. The oxidation/sulfidation test results for the coated specimens were compared with those for the uncoated alloys and for high-chromium structural alloys of interest in fossil energy applications. Coatings tested were Fe--Cr--Mo. Alloys tested include nickel base, nickel, and chromium alloys, and stainless steel 310. 5 refs., 12 figs., 2 tabs.

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6211925
• Report Number(s): CONF-900419-8; ON: DE91004458
• Resource Relation: Conference: 8. international triennial conference on thin films and the 17th international conference on metallurgical coatings, San Diego, CA (USA), 1-6 Apr 1990
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
36 MATERIALS SCIENCE
CHROMIUM
CORROSION RESISTANCE
CHROMIUM ALLOYS
CORROSION
IRON
MOLYBDENUM
NICKEL ALLOYS
NICKEL BASE ALLOYS
PROTECTIVE COATINGS
STAINLESS STEEL-310
EQUIPMENT
FOSSIL-FUEL POWER PLANTS
MICROSTRUCTURE
OXIDATION
PROGRESS REPORT
SCALING
SERVICE LIFE
SULFIDATION
WEAR
ALLOYS
AUSTENITIC STEELS
CHEMICAL REACTIONS
CHROMIUM-NICKEL STEELS
COATINGS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
DOCUMENT TYPES
ELEMENTS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
METALS
POWER PLANTS
STAINLESS STEELS
STEEL-CR25NI20
STEELS
THERMAL POWER PLANTS
TRANSITION ELEMENTS
200104* - Fossil-Fueled Power Plants- Components
360105 - Metals & Alloys- Corrosion & Erosion