Permalloy. Scheme, description

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Permalloy. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Electricity for beginners

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Permalloys are iron-nickel alloys with nickel content from 36 to 80%.

To improve certain characteristics of permalloys, chromium, molybdenum, copper, etc. are added to their composition.

Characteristic features of all permalloys are their easy magnetization in weak magnetic fields and increased electrical resistivity.

Permalloys are ductile alloys that are easily rolled into sheets and strips up to 0,02 mm thick or less. Due to the increased resistivity and stability of the magnetic characteristics, permalloys can be used up to frequencies of 200-500 kHz.

Permalloys are very sensitive to deformations that cause deterioration of their original magnetic characteristics. The restoration of the initial level of the magnetic characteristics of the deformed permalloy parts is achieved by their heat treatment according to a strictly developed regime.

Author: Smirnova L.N.

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