Classification of High-Permeability Nickel-Iron Alloys

Abstract
Based on known nickel‐iron alloys with very high permeabilities and our own systematic studies of ternary nickel‐iron‐vanadium, nickel‐iron‐tungsten, and higher systems with metal additions Me = Cu, Cr, Mo, W, V, and others, universally valid concepts will be developed on the relations existing in these alloys between chemical composition, structure, heat treatment, and properties. In the case that the added metals enter into an essentially stronger bond with Ni than with Fe, a rule is presented which connects the chemical composition of the high‐permeability alloys with the valency of the added metal. The consequences of this rule are discussed and compared with experiment.

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