Effect of Exogenous Zirconia Nanophases on the Structural Properties of the Sulfur- and Tin-Containing Nickel Melts
- Authors: Anuchkin S.N.1
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science
- Issue: Vol 2017, No 11 (2017)
- Pages: 948-956
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/171822
- DOI: https://doi.org/10.1134/S0036029517110039
- ID: 171822
Cite item
Abstract
The surface tension and the density of the nickel melts with introduced ZrO2 nanoparticles are studied by the sessile drop method using a digital camera and computer processing of images. The revealed differently directed effects of nanoparticles on the surface tension in the Ni–Sn and Ni–S systems points to a change in the structure of the melt–gas surface layer. The nanoparticles are shown to affect the adsorption of surfactants, and the surface layer is likely to consist of adsorbed Ni + (ZrO2–surfactant) ensembles. The ZrO2 content in a metal is determined using the technique of separate determination of the zirconium content dissolved in a metal and zirconium in the form of ZrO2. It was found that, at 0.10 wt % ZrO2 initially present in a metal, 0.021–0.031 wt % ZrO2 are retained in samples; that is, about 70 rel % ZrO2 are removed to the interface in the form of ensembles. Auger spectroscopy analysis of the Ni–Sn–ZrO2 surface film detected 5–10 rel % Zr in the surface layer.
About the authors
S. N. Anuchkin
Baikov Institute of Metallurgy and Materials Science
Author for correspondence.
Email: AnuchkinSN@yandex.ru
Russian Federation, Leninskii pr. 49, Moscow, 119334