This is not the latest version of this item. The latest version can be found here.
Determination of the Partial Contributions to the Electrical Conductivity of TiO2-SiO2-Al2O3-MgO-CaO Slags: Role of the Experimental Processing Conditions
Name
11663_2022_Article_2433.pdf
Size
485.46 KB
Format
Adobe PDF
Checksum (MD5)
0f17e6919fdf6382544f471ed3c963f8
Author(s)
Martin-Treceno, Samuel
Allanore, Antoine
Bishop, Catherine M.
Watson, Matthew J.
Marshall, Aaron T.
Date Issued
February 10, 2022
Publisher
Springer US
Citation
Martin-Treceno, Samuel, Allanore, Antoine, Bishop, Catherine M., Watson, Matthew J. and Marshall, Aaron T. 2022. "Determination of the Partial Contributions to the Electrical Conductivity of TiO2-SiO2-Al2O3-MgO-CaO Slags: Role of the Experimental Processing Conditions."
Version
Final published version
Abstract
Abstract
The electrical transport properties of molten TiO2–SiO2–Al2O3–MgO–CaO slags were determined as a function of temperature and oxygen partial pressure. To avoid the corrosion of crucible materials by this slag at ultra high temperatures, the pendant droplet technique was used inside a modified floating zone furnace. Electronic and ionic transference numbers were estimated using stepped-potential chronoamperometry experiments to quantify the contribution of the electronic/ionic conductivity to the total electric conductivity. The results show that these slags are mixed conductors, where current is carried by ionic and electronic carriers. The oxygen partial pressure dependence of the electronic transference numbers,
$$t_e$$
t
e
, indicated a semiconducting mechanism in the molten slag. The ratio of the different valences of the transition metal ions had a predominant effect on the
$$t_e$$
t
e
. The
$${{\text{TiO}}_{2}}$$
TiO
2
content also favoured electronic conduction, while the effect of temperature and structure was less noticeable within the temperature and composition range studied.
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/s11663-022-02433-5
