Synthesis of Core-Shell MgO Alloy Nanoparticles for Steelmaking
Source abstract
Abstract
In this present study, we aimed to reduce the wetting angle of nanoparticles (NPs) in molten steel and thus, increase their utilization ratio in steel. In order to achieve this, a two-step process was used to synthesize a core-shell AlTi-MgO@C NP structure for steelmaking through a dopamine polymerization process, which used an ammonium persulfate oxidant and high-temperature carbonization. The NP surface characterization was tested by scanning electron microscopy and field emission transmission electron microscopy, while the hydrodynamic NP size was measured by dynamic light scattering. The results showed that a carbon coating that had a thickness of 10 nm covered the NP surface, with the dispersion and stability of the particles in the aqueous solution having improved after the coating. The contact angle of the surface-treated NP was less than that of the uncoated NP in high-temperature molten steel and the corresponding wetting energy was smaller, which indicated improved wettability.
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Research context
OpenAlex topics: Polymer Surface Interaction Studies · Metal and Thin Film Mechanics · Magnesium Oxide Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Central Iron and Steel Research Institute, Beijing 100081, China
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China
Funding
National Science Foundation of China
References (28)
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