pp. 47-56
S&M469 Research Paper Published: 2002 Pt Electrode-Based Sensor Prepared by Metal Organic Chemical Vapor Deposition for Oxygen Activity Measurements in Glass Melts [PDF] Roberto Vargas-García, Antonio Romero-Serrano, Miguel Angeles-Hernandez, Federico Chavez-Alcala and Carlos Gomez-Yañez Keywords: metal organic chemical vapor deposition, oxygen sensor, Pt film, glass melts
A sensor employing yttria-stabilized zirconia (YSZ) was used to determine the oxygen activity of amber glass at laboratory scale at temperatures from 1473 K to 1673 K. The YSZ sensors were coated with Pt electrode films deposited by the metal organic chemical vapor deposition (MOCVD) method to increase the conductivity of the measuring devices and to diminish their response time. The oxygen potential of glass was related to the oxidation state of iron through the Nernst equation and the free energy of the equilibrium reaction between FeO and Fe2O3. The oxidation reduction in the FeO-Fe2O3 equilibrium moved towards the reduced side when the temperature of molten glass was increased. A strong correlation of the activity ratio (aFe01 .5/aFeO) to the R2O/C parameter (where R = Na and K) was found at all of the test temperatures.
Cite this article Roberto Vargas-García, Antonio Romero-Serrano, Miguel Angeles-Hernandez, Federico Chavez-Alcala and Carlos Gomez-Yañez, Pt Electrode-Based Sensor Prepared by Metal Organic Chemical Vapor Deposition for Oxygen Activity Measurements in Glass Melts, Sens. Mater., Vol. 14, No. 1, 2002, p. 47-56. |