TY - JOUR
T1 - Pt electrode-based sensor prepared by metal organic chemical vapor deposition for oxygen activity measurements in glass melts
AU - Vargas-García, Roberto
AU - Romero-Serrano, Antonio
AU - Angeles-Hernandez, Miguel
AU - Chavez-Alcala, Federico
AU - Gomez-Yañez, Carlos
PY - 2002
Y1 - 2002
N2 - 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 (aFeO1.5/aaFeO) to the R2O/C parameter (where R = Na and K) was found at all of the test temperatures.
AB - 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 (aFeO1.5/aaFeO) to the R2O/C parameter (where R = Na and K) was found at all of the test temperatures.
KW - Glass melts
KW - Metal organic chemical vapor deposition
KW - Oxygen sensor
KW - Pt film
UR - http://www.scopus.com/inward/record.url?scp=0036005559&partnerID=8YFLogxK
M3 - Artículo
SN - 0914-4935
VL - 14
SP - 47
EP - 56
JO - Sensors and Materials
JF - Sensors and Materials
IS - 1
ER -