Measurements of the Parameter, &lt;I&gt;P&lt;/I&gt;&lt;SUB&gt;\ominus&lt;/SUB&gt;, for the Determinations of Mixed Ionic and N-Type Electronic Conduction in Commercial Zirconia Electrolytes

Iwase, M.; Ichise, Eiji; Takeuchi, Masami; Yamasaki, Takaaki

doi:10.2320/matertrans1960.25.43

Cited by 94 publications

(34 citation statements)

References 22 publications

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“…[24][25][26][27][28] calculated using the modified Nernst equation (Eq. [1]) and Generally, P is considered as a function of temperature and the EMF reading from the oxygen concentration cell as the composition of the electrolyte.…”

Section: The Basic Principle Of Feo Activity Measurementmentioning

confidence: 99%

Measurement of FeO activity and solubility of MgO in smelting slags

Liu

Fruehan

Morales

et al. 2001

Metall Mater Trans B

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In bath smelting, the FeO activity of the slag must be known to predict the equilibrium of slag-metal reactions and for effective control of the rate of reduction in the system. Also, knowledge of the solubility of MgO in these slags is useful for reducing refractory consumption. A series of measurements of the FeO activity in simulated bath smelting slags (CaO-SiO 2 -Al 2 O 3 -MgO sat -FeO) were conducted by the electromotive force (EMF) technique. The influence of the slag composition on the relationship between the FeO activity coefficient and FeO content was studied. It has been found that the measured FeO activity coefficient decreases with increasing FeO content in the slag and increases slightly with increasing slag basicity, which is defined as (CaO ϩ MgO)/(SiO 2 ϩ Al 2 O 3 ) on a mole fraction basis.The measured values of the FeO activity coefficient are in reasonable agreement with previously published data. The solubility of MgO was also measured and found to range from 16 to 30 pct and decrease with increasing basicity.

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Section: The Basic Principle Of Feo Activity Measurementmentioning

confidence: 99%

Measurement of FeO activity and solubility of MgO in smelting slags

Liu

Fruehan

Morales

et al. 2001

Metall Mater Trans B

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“…The parameter P for stabilized zirconia electrolytes produced by Nippon Kagaku Togyo Co. Ltd. were measured by Iwase et al (12). The result for 0.91ZrO2+0.09MgO…”

Section: Activity Of Chromium and Nickel In The Liquid Ni-cr Alloysmentioning

confidence: 99%

Thermodynamic Study of Liquid Ni–Cr Alloys Equilibrated with Cr<SUB>2</SUB>O<SUB>3</SUB> by EMF Method

et al. 1987

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Oxygen solubility and chromium activity in Ni-Cr alloys equilibrated with Cr203 were measured by a conventional sampling method and the emf method with stabilized zirconia in the concentration range from 2 to 70 at°%Cr at the temperatures of 1733 to 1833 K. Temperature dependences of oxygen solubility are as follows:Activities of Cr show negative deviations from Raoult's law in the nickel rich region and negative to positive deviations in the middle concentration region at 1783 K. The results werecompared with the literature data.

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“…Values for this parameter for the magnesia-stabilized zirconia tubes used in this study have been reported elsewhere. 12) logðP e =PaÞ ¼ 2:54 Â 10 À 6:45 Â 10 4 =ðT=KÞ ð3Þ…”

Section: Resultsmentioning

confidence: 99%

Activity of Iron Oxide in Magnesiowüstite in Equilibrium with Solid Metallic Iron

2006

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By employing an electrochemical technique incorporating magnesia-stabilized zirconia electrolyte, the activities of iron oxide, Fe x O, were measured in magnesiowüstite, Fe x O-MgO solid solution, in equilibrium with solid metallic iron at temperatures between 1373 and 1573 K. The sub-regular solution model was applied to the Fe x O activities, and the calculated Fe x O activities were in good agreement with the experimental values in this study and the literatures at temperatures between 1073 and 1573 K with an accuracy of AE0:02.

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Measurements of the Parameter, <I>P</I><SUB>\ominus</SUB>, for the Determinations of Mixed Ionic and N-Type Electronic Conduction in Commercial Zirconia Electrolytes

Cited by 94 publications

References 22 publications

Measurement of FeO activity and solubility of MgO in smelting slags

Measurement of FeO activity and solubility of MgO in smelting slags

Thermodynamic Study of Liquid Ni–Cr Alloys Equilibrated with Cr<SUB>2</SUB>O<SUB>3</SUB> by EMF Method

Activity of Iron Oxide in Magnesiowüstite in Equilibrium with Solid Metallic Iron

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Measurements of the Parameter, <I>P</I><SUB>\ominus</SUB>, for the Determinations of Mixed Ionic and N-Type Electronic Conduction in Commercial Zirconia Electrolytes

Cited by 94 publications

References 22 publications

Measurement of FeO activity and solubility of MgO in smelting slags

Measurement of FeO activity and solubility of MgO in smelting slags

Thermodynamic Study of Liquid Ni&ndash;Cr Alloys Equilibrated with Cr<SUB>2</SUB>O<SUB>3</SUB> by EMF Method

Activity of Iron Oxide in Magnesiow&uuml;stite in Equilibrium with Solid Metallic Iron

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Thermodynamic Study of Liquid Ni–Cr Alloys Equilibrated with Cr<SUB>2</SUB>O<SUB>3</SUB> by EMF Method

Activity of Iron Oxide in Magnesiowüstite in Equilibrium with Solid Metallic Iron