Notice of RetractionRelationship between thickness of siliconized layer prepared by electrodeposition and components of molten salts
The siliconized layer on low silicon steel sheet was obtained by electrodeposition in KCl-NaCl-NaF-SiO2 molten salts. Proportion of molten salts was designed using symmetry-simplex method. A regression equation was found to be a better fit for the relationship between thickness of the siliconized layer and salts components. Based on the equation, the thickness isoline was plotted to reveal the influence of salts proportion on thickness. The results showed that NaF content had a significant effect on the thickness of the siliconized layer. The thickness increased gradually with the increase of NaF content. When NaF was 0.4-0.6 mole fraction, the thickness increased remarkably. Furthermore, when the concentration of KCl was kept constant, the ratio of NaF/NaCl was important to control the thickness. The thickness was relatively small as mole fraction ratio NaF/NaCl was about 2:3.
Advances in the production of high-silicon electrical steel by thermomechanical processing and by immersion and diffusion annealing
Abstract Steel sheet with 6.5% Si is an excellent soft magnetic material, but its industrial production in low thickness still remains problematic or expensive. Using an adequate thermomechanical routing makes it possible to obtain steel with silicon up to 6.5% Si and thickness below 0.5 mm with excellent magnetic properties. Also a second production process is based on an immersion in a hypereutectic Al–Si bath at the adequate temperature in order to deposit a Si-rich layer on a steel substrate, followed by a proper diffusion annealing. The process is leading to homogenous concentrations of, e.g. 6.5% Si over the thickness being the power losses comparable with those industrially produced by chemical vapor deposition (CVD) method.
“Social Media Misinformation”—An Epidemic within the COVID-19 Pandemic
"Social Media Misinformation"-An Epidemic within the COVID-19 Pandemic.