Iron-silicon alloys

Fig. 5.17. The relative change in magnetization for a 3% silicon-iron alloy shows clear indications for a transition at 14 GPa, the end of the mixed phase region, 22.5 GPa, and the overdrive pressure at the Rayleigh line at 37.5 GPa (after Duvall and Graham [77D01]).

The indicated transition pressure of 15 GPa is in agreement with the published data with shock-wave structure measurements on a 3% silicon-iron alloy, the nominal composition of Silectron. A mixed phase region from 15 to 22.5 GPa appears quite reasonable based on shock pressure-volume data. Thus, the direct measure of magnetization appears to offer a sensitive measure of characteristics of shock-induced, first-order phase transitions involving a change in magnetization. 

Table 3.56 Analysis of typical silicon-iron alloys...

Cubex [Westinghouse], TM for an oriented silicon-iron alloy in rolled sheet form for use as cores for transformers and other inductive devices. The alloy sheet comprises cubic grains with faces parallel to the sheet surface. In one form, the sheet is doubly oriented with two directions of easy magnetization parallel to the surface to the sheet. One direction of easy magnetization is parallel to the... 

Lea] Leak, D. A., Leak, G.M., Solubility and Diffusion of Carbon in a Silicon-Iron Alloy , J. Iron... 

The cathodic substrate for recovering pure silicon were more extended surface materials such as nickel plates (50 X10 X1 mm) or others, which will be the subject of discussions below. The surface area of the working electrode was determined after each experiment by measuring the immersion depth in the bath. Anodes were for this purpose, 90 to 100% mass silicon-iron alloys from Goodfellow. 

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