Molten glass corrosion resistance of immersed combustion-heating tube materials in soda-lime-silicate glass

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb09765.x· OSTI ID:7072744

Sundaram, S K; Hsu, J Y; Speyer, R F ^[1]

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1. Georgia Inst. of Technology, Atlanta, GA (United States). School of Materials Science and Engineering

The corrosion resistance of molybdenum, molybdenum disilicide, and a SiC[sub (p)]/Al[sub 2]O[sub 3] composite to molten soda-lime-silicate glass was studied. The ASTM-C621-84 corrosion test method was modified because of inherent inaccuracies in the method and Si attack of platinum crucibles. Specimen-glass interfacial regions were characterized using XRD, SEM, and EDS. After 48 h of exposure at 1,565 C, the half-down corrosion recessions of Mo, MoSi[sub 2], and SiC[sub (p)]/Al[sub 2]O[sub 3] were 0.11, 0.316, and 0.26 mm, respectively. Mo oxidized to form a MoO[sub 2] surface scale which cracked, allowing glass seepage and further oxidation. Silicon was leached out of MoSi[sub 2] into the glass, leaving a Mo[sub 5]Si[sub 3] interface and particles of Mo near the interface. For the SiC[sub (p)]/Al[sub 2]O[sub 3] composite, bubbles observed at the interfacial regions formed from oxidation of SiC to form CO. Thermodynamic modeling corroborated these experimental observations. The work discussed herein is part of a larger research thrust to develop materials for immersed gas-fired radiant burner tubes for glass melters.

• OSTI ID: 7072744
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:6; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
034000 -- Natural Gas-- Combustion
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
360604 -- Materials-- Corrosion
Erosion
& Degradation
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BURNERS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
COMPOSITE MATERIALS
CORROSION PRODUCTS
CORROSION RESISTANCE
CORROSIVE EFFECTS
DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
FLUIDS
GAS BURNERS
GLASS
LIQUIDS
MATERIALS
MATHEMATICAL MODELS
METALS
MICROSCOPY
MOLYBDENUM
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICIDES
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCANNING ELECTRON MICROSCOPY
SCATTERING
SILICIDES
SILICON CARBIDES
SILICON COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY