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Title: Surface modification for corrosion resistance

The raw gas environments that arise from coal gasification have chemical compositions that are low in pO{sub 2} and moderate-to-high in pS{sub 2}. Metallic materials for service in such an environment undergo predominantly sulfidation attack at temperatures of 400 to 700{degree}C. Modification of alloy compositions in bulk can alter the scaling processes and lead to improvements in corrosion resistance, but the benefits can only be attained at temperatures much higher than the service temperatures of the components. Modification of surfaces of structural components by several of the coating techniques examined in this study showed substantial benefit in corrosion resistance when tested in simulated coal gasification environments. The paper presents several examples of surface modification and their corrosion performance.
Authors:
Publication Date:
OSTI Identifier:
10186040
Report Number(s):
ANL/ET/CP--80044; CONF-9306246--1
ON: DE93017419
DOE Contract Number:
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: Workshop on materials for coal gasification power plant,Petten (Netherlands),14-16 Jun 1993; Other Information: PBD: Jun 1993
Research Org:
Argonne National Lab., IL (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 36 MATERIALS SCIENCE; COAL GASIFICATION; MATERIALS; SURFACE COATING; CORROSION RESISTANCE; TEMPERATURE RANGE 0400-1000 K; CARBON STEELS; NICKEL BASE ALLOYS; COBALT BASE ALLOYS; AUSTENITIC STEELS; CHROMIUM ALLOYS; ALUMINIUM ALLOYS; IRON BASE ALLOYS; OXYGEN; SULFUR; PARTIAL PRESSURE; SULFIDATION; SILICON 010404; 360105; GASIFICATION; CORROSION AND EROSION