Role of silicon additions in the corrosion resistance of chromia-forming alloys in coal gasification atmospheres

Journal Article · Thu Apr 01 04:00:00 EST 1982 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2123971· OSTI ID:7024817

Nagarajan, V; Miner, R G; Levy, A V

The use of silicon in Fe-18% Cr alloys was investigated to determine whether the poor sulfidation resistance of 18% Cr iron-base alloys for use in reducing coal gasification system atmospheres could be improved. It was determined that up to 2% Si did not produce an SiO/sub 2/ layer, but rather occurred in isolated areas in the corrosion scale and internally in the base metal. The 18% Cr also did not produce a continuous protective scale, permitting rapid corrosion to occur within 100 hr of exposure to P/sub O2/ .10/sup -18/ atm, P/sub S2/ .10/sup -6/ atm gases at 982/sup 0/C. 7 refs.

• Research Organization: Lawrence Berkeley Lab, CA, USA
• OSTI ID: 7024817
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 129:4; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHROMIUM ALLOYS
COAL GASIFICATION PLANTS
CORROSION RESISTANCE
DESIGN
ELECTRON MICROSCOPY
FABRICATION
INDUSTRIAL PLANTS
IRON ALLOYS
MATERIALS
MICROSCOPY
SCALING
SCANNING ELECTRON MICROSCOPY
SILICON ADDITIONS
SILICON ALLOYS