Effect of the size factors on the heterophase interaction of exogenous refractory compound nanoparticles with sulfur in a model nickel melt

• Published in: Russian metallurgy Metally Vol. 2012; no. 3; pp. 178 - 184
• Main Authors: Anuchkin, S. N., Burtsev, V. T., Samokhin, A. V., Gvozdkov, I. A.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.03.2012; Springer Nature B.V
• Subjects: Aluminum oxide; Chemistry and Materials Science; Materials Science; Mathematical models; Melts; Metallic Materials; Nanoparticles; Nickel; Planetary mills; Sulfur; Tin; RUSSIAN Metallurgy; Sulfur Removal; Surfactant; Cast Iron; Size Factor
• ISSN: 0036-0295; 1555-6255; 1531-8648
• DOI: 10.1134/S0036029512030020

The dependence of the degree of sulfur removal on the size factors is studied during the heterophase interaction of refractory compound nanoparticles in a nickel melt. These factors are the time of holding of Al 2 O 3 and TiN nanoparticles in a liquid metal (2–10 min), the size and number of Al 2 O 3 and TiN nanoparticles, the time of processing of a nickel powder with nanoparticles in a planetary mill (0−300 min), and the sulfur concentration in a Ni-(0.0775−0.1750 wt %) S melt. It is shown that the degree of sulfur removal increases as the average size of Al 2 O 3 nanoparticles decreases from 150 to 35 nm and that of TiN nanoparticles decreases from 2 × 10 4 to 30 nm. The effect of the number of Al 2 O 3 nanoparticles in a metal on the degree of sulfur removal is considered. A change in the time of processing of a powder mixture in a planetary mill is found to weakly affect the degree of sulfur removal.