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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

What are the applications of linear expansion?

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 inver metal?

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

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.

Which materials would generate the strongest magnetic field if used as the core?


What is a example of converting electrical energy into magnetic energy?

An electromagnet, a coil of wire round a magnetic core. An electric current in the wire produces a magnetic field round the core, which contains energy which could be used to lift a load.

Why do magnets stick to stainless revolvers?

This has got to do with the amount of Chrome in the alloy used to make the revolver. With a lot of chrome in the alloy, the bonds between chrome and iron would not allow for magnetic interaction. Most stainless steel is magnetic though if one just applies a strong enough magnetic force. regards.

Can PVC insulation hold the magnetic field created around a current carrying conductor?

No, to shield a magnetic field you need a magnetizable material with high permeability and low permanence. The most commonly used alloy for this purpose is called mumetal, an alloy of nickel and iron.

Which generation computer is ibm1404?

2ng generation. It used transistors and magnetic core memory

What material is commonly used in a core of a transformer?

Soft iron, for its high magnetic permeability.

A compass is a scientific instrument used to locate what?

A compass is a scientific instrument used to locate the north magnetic pole. The magnetic changes in the Earth's core make the north magnetic pole move over time.

Why magnetic core used in transformers?

To 'contain' the magnetic flux produced by the primary winding, to ensure that it links with the secondary winding with the minimum 'leakage'. The core is a magnetic circuit manufactured from laminations of silicon steel, to maximise the flux density and to minimise eddy-current and hysteresis losses.

What primary storage was used in the first generation computers?

Many different types of memory were used in first generation computers, a few of the most commonly used were:electrostatic cathode ray tubes (DRAM)sonic delay lines (DSAM)electrostatic selectron tubes (SRAM)magnetic drums (NVSSAM)magnetic disks (NVSSAM)magnetic core stacks (NVSRAM)Magnetic core memory eventually became dominate.Second and third generation computers continued to use sonic delay line memory, magnetic disk memory, and magnetic core memory (with magnetic core memory still dominating).Late in the third generation computers solid state memory chips replaced all other types of memory.Fourth generation computers used only solid state memory chips.

Which alloy is made by mixing iron and nickel?

it's called Nife (chemical formula-NiFe)its very magnetic and is often used in magnets

Is nichrome a good condutor of electricity?

No.Nichrome is a non-magnetic alloy of nickel, chromium, and often iron, usually used as a resistance wire.

Why you iron used rather than steel for the core of an electomagnet?

Because iron is magnetic properties of steel.

For what storage medium are phase change alloy used?

There are Magnetic optical drives that use phase change for disk storage. This might be what you're referring to.

What was the significance of core?

Core, I am assuming, means "magnetic core memory". This was an early type of persistent memory used on early computers. You could put a core on a shelf and pull it down for use several years later, and it would still have the data in memory as it was the day you put it on the shelf. Core memory was used as permanent random-access memory on early computers A very small magnetic doughnut (a single core) would have three wires passed through it. Two wires would be used to set or read the position of the magnetic field of the particular core doughnut. A third wire was used to carry the signal if the field was reversed. All magnetic fields can be reversed by creating a nearby magnetic field at sufficient strength. Current in one of the address wires was insufficient to cause a change in the magnetic field of the doughnut core. But when both address wires carried current at the same time, the magnetic field generated would flip the field of the core to align with the field produced by the current in the address wires. When one of these tiny doughnuts switched magnetic poles a current was then introduced into the sensor wire and read as a change that might indicate a 1 or a zero. The machine would then put the core back the way it was to preserve that value stored in that memory location. All of this wiring using these very tiny doughnuts of magnetic material was difficult and cost a lot of money to produce. It was all they had for permanent storage until transistors came into common use.

Alloy used in the manufacture of surgical instruments?

titanium alloy titanium alloy

What did the second generation computers use for memory?

Most used ferrite core magnetic memory, but some other memory technologies also used were:plated wire magnetic memorythin-film magnetic memoryrotating magnetic drum or disk memorymagnetostrictive wire delayline memoryetc.

What happen if wood is used for making transformer core instead of iron?

It would not function. In general, the core must be made of a material with certain magnetic properties. Wood has none.

Are magnets used in electric magnets?

No. Electromagnets are usually made of a core (some type of metal that can be magnetized such as iron) and a coil. The coil is put around the core, and if current flows through the coil the core will become magnetic.

How does a magnetic substance turn into an electromagnet?

Magnetic materials (usually iron) is used in the core of electromagnets. A coil is wrapped around this core, an electric current applied and it remains magnetized as long as the current is on. Once the current is turned off, it loses most of it's magnetism.