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Invar can be used as magnetic core material, but there are better choices. Invar is alloyed for its thermal stability. It is iron with a good percentage of nickel. Remember that magnetic core material is usually laminated or is "powdered" in a way to electrically isolate the "bits" of core material so eddy currents will be reduced. A link is posted to the article on Invar put up by our friends at Wikipedia, where knowledge is free.

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โˆ™ 2008-02-19 07:08:04
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Q: Can INVAR alloy be used as a magnetic core?
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Related questions

Does invar is used in missiles?

There are invar missiles.

Why is invar so often used to make acurate thecnical instrements that are used in hot situations?

invar steel is an alloy of steel and nickel . it doesnt expand like any other material at high temperatures .therefore it is used to measure accurately

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Invar (a special iron - nickel alloy) is used in pendulam instead of aluminium ,in order to decrease the expansivity.

Why is invar often used to make accurate technical instruments that are used in hot situations?

Because invar does not expand that much when exposed to high temperatures.

What is the function of magnetic core in Electrical Machines?

generally magnetic core is used for creating a path for the flux to travel through.this magnetic core offers less reluctance path,where as air medium provides high reluctance path.

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An inver alloy has been known as a material having a small coefficient of linear thermal expansion. For example, a Fe64Co36 alloy, a Fe66Co34 alloy and a Fe73Co27 alloy are well known as the inver alloys. By employing the inver alloy as a magnetic pole of the recording head, the projection length of the magnetic pole can be reduce to one-tenth of the projection length of the conventional magnetic pole made of the Fe70Co30 alloy. However, saturation magnetization of the inver alloys are very small, e.g., 1.0 T, and their soft magnetic characteristics are insufficient, so they have not been used for magnetic poles

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