Evaluation of high Ni-Cr-Mo alloys for the construction of sulfur dioxide scrubber plants
- Univ. of Madras (India). Dept. of Analytical Chemistry
Corrosion in wet lime/limestone systems used for flue gas desulfurization in thermal power plants is of great concern. The frequent variations in acidity and in chloride and fluoride ion concentrations experienced by such systems pose a serious threat to the materials of construction. Currently used materials mostly type 316L stainless steel often fail to meet their life expectancy. The present study evaluates the performance of advanced Ni-Cr-Mo alloys 59 and C-276 in a simulated sulfur dioxide scrubber environment. Accelerated tests showed that high Ni-Cr-Mo alloys have little tendency to leach metal ions such as chromium, nickel, and molybdenum at different impressed potentials. Scanning electron microscopy was used to examine the morphology of pitting attack.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 201097
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 1 Vol. 5; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
CHEMICAL COMPOSITION
CHLORIDES
CHROMIUM ALLOYS
CORROSION RESISTANCE
DESULFURIZATION
ELECTROCHEMICAL CORROSION
FLUORIDES
FOSSIL-FUEL POWER PLANTS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
PH VALUE
PITTING CORROSION
SAMPLE PREPARATION
SCANNING ELECTRON MICROSCOPY
SCRUBBERS
SULFITES