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Effect of TiO2 on electrical conductivity, viscosity, and melt structure of electroslag remelting slag.
- Source :
- Metallurgical Research & Technology; 2024, Vol. 121 Issue 4, p1-9, 9p
- Publication Year :
- 2024
-
Abstract
- Electrical conductivity and viscosity of electroslag being crucial parameters. Using a high-temperature physical property measuring instrument, the effects of different TiO<subscript>2</subscript> concentration and temperatures on electroslag conductivity and viscosity were investigated. With an increase from 1733 K to 1823 K resulting in elevated electrical conductivity (1.04 to 1.89 S · cm<superscript>−1</superscript>) and reduced viscosity (0.14 to 0.09 Pa · s). This is because the higher the temperature is, the more the polymer in the slag is depolymerized. Similarly, as TiO<subscript>2</subscript> content increased from 7% to 16%, the electrical conductivity increased (0.24 to 1.14 S · cm<superscript>−1</superscript>), and the viscosity decreased (0.33 to 0.11 Pa · s). TiO<subscript>2</subscript> simplified the structure of the melt, and based on the infrared and Raman spectral analysis, it can be seen that Ti<superscript>4+</superscript> replaced Al<superscript>3+</superscript> in the [AlO<subscript>4</subscript>]<superscript>5−</superscript> structure to form the Ti<subscript>2</subscript>O<subscript>6</subscript><superscript>4−</superscript>structural unit, which depolymerized the structure of the slag system, leading to the reduction of Q<superscript>4</superscript> units and thus greatly reducing the electrical conductivity. The relationship between electrical conductivity, viscosity, and structure was quantified, demonstrating a clear inverse correlation between electrical conductivity and viscosity. The relationships offer insights into predicting electrical conductivity and viscosity based on slag structure. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 22713646
- Volume :
- 121
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Metallurgical Research & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 178241965
- Full Text :
- https://doi.org/10.1051/metal/2024054