2008
DOI: 10.1007/s11663-008-9133-y
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Investigation on Yttrium Activity in Liquid Aluminum by Yttrium Sensor

Abstract: x (x = 0.23 to 0.29) solid electrolyte samples were prepared by direct synthesis method, and their impedance spectra were measured in air at different temperatures. Results show that the conductivity is on the order of 10 -5 to 10 -2 SAEcm -1 at 673 to 1023 K, and the activation energy ranges within 1.15 to 1.40 eV. The yttrium sensors were assembled with Y 0.75 Ca 0.25 F 2.75 solid electrolyte and used to determine the activity of yttrium dissolved in liquid Al-Y alloys at 1033 K, while the accuracy of the yt… Show more

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