Assessment of Si and Al diffusion for the production of high Si and high Si–Al electrical steel

Fabrication and magnetic properties of Fe–6.5% Si alloys by magnetron sputtering method

“…The enhancement of Si penetration is obviously owing to the double-side deposition, which allows thinner deposited FeSi films and shorter Si diffusion route in the process of Si enrichment as compared to single-side deposition. To obtain variations of Si concentration profiles during diffusion processes, DICTRA simulation can be a useful approach to predict annealing times and temperatures to achieve a desired Si distribution [20]. Cross-sectional Si distributions during annealing at 1180 • C for the double-side deposited samples are simulated by means of DICTRA software, as plotted in Fig.…”

Study on the Si penetration into Fe sheets using PVD method and its application in the fabrication of Fe-6.5wt.% Si alloys

“…With more Si entering the Fe substrate, γ-Fe(Si) phase starts to transform to α-Fe(Si) phase. Knowing that Si atoms diffuse more quickly in α-Fe(Si) phase than in γ-Fe(Si) [20,21], Si penetration can be suggested to be controlled by its migration through the α-Fe(Si) and γ-Fe(Si) interface. The argument is confirmed by the result that a critical point at which the Si concentration dropped quickly appears around 1.9 wt.%, as shown in Fig.…”

Study on the Penetration of Al into Fe-3 %Si Thin Sheet Using PVD Method and Its Application in Preparing Fe-6.5 %(Si+Al) Alloy

“…Claudemiro Bolfarini studied the magnetic properties of spray-formed Fe-6.5 %Si-1.0 %Al alloy and found that 1 % of Al added to the Fe-6.5 %Si alloy could suppress the generation of B2 structure and improve the Fe-Si alloy ductility [10]. J. Barros, et al assessed the feasibility of increasing the concentration of (Si, Al) in low-Si steel sheet by hot dipping and diffusion treatment [11]. All the above researches concluded that Al alloying into Fe-Si binary systems being advantage to its properties, but whether Fe-Si-Al alloys, especially Fe-6.5 % (Si+Al) alloy could be prepared by penetrated Al into Fe-3 %Si thin sheet was less reported, and what's the interaction effect between penetrated Al and solved Si in Fe matrix was still not very clear.…”