Kinetics of Iron - Sodium Disilicate Reactions and Wetting

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Thermogravimetric and sessile drop measurements were used to study kinetics of redox reactions between sodium disilicate glass and iron. Two redox reaction sequences were identified; both introduced ferrous oxide into the glass at the interface. One consists of formation of ferrous oxide at the interface by reduction of sodium ions in the glass; this is primarily dependent on the a(FeO) in the metal being less than one. The second consists of oxidation of ferrous ions in the glass by the reduction of sodium ions to form ferric ions which subsequently react with the iron to form ferrous oxide. The reaction ... continued below

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32 p.

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Tomsia, Antoni P. & Pask, Joseph A. January 1, 1980.

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Thermogravimetric and sessile drop measurements were used to study kinetics of redox reactions between sodium disilicate glass and iron. Two redox reaction sequences were identified; both introduced ferrous oxide into the glass at the interface. One consists of formation of ferrous oxide at the interface by reduction of sodium ions in the glass; this is primarily dependent on the a(FeO) in the metal being less than one. The second consists of oxidation of ferrous ions in the glass by the reduction of sodium ions to form ferric ions which subsequently react with the iron to form ferrous oxide. The reaction rates were shown to be sensitive to temperature, time, total ambient pressure, partial pressure of sodium and oxygen in the atmosphere, and the a(FeO) in the iron. Decrease of contact angles and spreading occur with the redox reaction in which the metal plays an active role, i.e. whose a(FeO) is less than one and whose composition undergoes a change.

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32 p.

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  • Journal Name: Journal of the American Ceramic Society; Journal Volume: 64; Journal Issue: 9

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  • Report No.: LBL-10443
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 1030580
  • Archival Resource Key: ark:/67531/metadc833093

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1980

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Oct. 2, 2017, 5:06 p.m.

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Tomsia, Antoni P. & Pask, Joseph A. Kinetics of Iron - Sodium Disilicate Reactions and Wetting, article, January 1, 1980; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc833093/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.