which of the following is one way to prevent the corrosion of iron?
u forgot to put the foloowings to choose from…
but still here are some ideas for u…
TO PREVENT RUST, KEEP METAL SURFACE DRY – OR ADD A COATING
Rust is corrosion that affects ferrous metals such as iron and steel. In many cases, water vapor must be in the air before rust can occur. With iron, for example, 40 percent humidity must be present before rust will start to occur. The best way to prevent corrosion is to keep metal surfaces dry. Isolating the metal by coating it with paint, lacquer or wax is another good way to prevent corrosion.
Before coating a metal surface, remove all traces of rust. Then apply a primer and finish with paint. It’s best if the paint and primer are the same brand; they usually are formulated to work together. Metals such as brass, copper or aluminum are best protected with either wax or by spraying them with lacquer or clear varnish.
Rust also can attack metal in inaccessible areas. Corrosion occurs inside a home hot-water heater, for example, because the ions circulating in the water make it easy for dissolved oxygen to pull the electrons from the interior surface of the metal tank.
Rust that occurs in localized areas is called localized corrosion. There are three types: galvanic, crevice and pitting.
- Galvanic corrosion: It occurs whenever two dissimilar metals contact each other. This creates a flow of electrons between the metals that eventually causes them to disintegrate. One way to prevent this corrosion is to replace one metal piece with another that is compatible with the mating piece.
For example, many aluminum storm doors have steel rivets holding the hinges or closing piston in place. Often, corrosion starts around these fasteners, then works to the adjacent aluminum panels. Drilling the corroded fasteners out and replacing them with aluminum pop-rivets will stop the galvanic corrosion before it spreads.
- Crevice corrosion: It occurs around the joints and seams of metal fixtures where dirt accumulates. By itself the dirt is not particularly harmful, but it allows moisture to collect; this causes corrosion. Joint and seam corrosion is a common occurrence on gutters and downspouts. Clean them often to keep dirt and leaves, which retain moisture, from building up. If rust is present, remove it with a flexible sanding wheel chucked in an electric drill, then prime and paint the bare metal.
- Pitting corrosion: It occurs outdoors when the wind bombards metal surfaces with minute particles of dirt, salt or sand and creates microscopic craters that retain moisture. At first, the corrosion is limited, then quickly escalates into a formidable problem. Outdoor electrical conduits, television antenna masts, metal windows and doors, and children’s play equipment are a few of the items that receive constant assault from air-borne particles and are subject to pit corrosion. This type of corrosion is severe near the seashore and is most noticeable on the side of the house that faces the prevailing winds. Check exposed metal surfaces often; sand and paint them if they show signs of pitting.
Where is the following?
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Corrosion of iron is caused by oxidation.
Preventing corrosion is simple.
Coat the surface with an oxygen barrier.
Choose the "folowing" that meets this requirement.
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this is doing nothing…which may not prevent iron from corrosion..however paints,amalgamation,electroplating..etc are some ways of preventing corrosion…thanx.
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myself
placing an iron object into a bath of oil should indefinitely prevent its corrosion.
Generally speaking, Oxygen is the main ingredient which you need to avoid. Anything which starves the object of oxygen is going to help reduce corrosion.
Why? Because corrosion is the act of "oxidization" – without oxygen, no oxidization, no corrosion.
References :
u forgot to put the foloowings to choose from…
but still here are some ideas for u…
TO PREVENT RUST, KEEP METAL SURFACE DRY – OR ADD A COATING
Rust is corrosion that affects ferrous metals such as iron and steel. In many cases, water vapor must be in the air before rust can occur. With iron, for example, 40 percent humidity must be present before rust will start to occur. The best way to prevent corrosion is to keep metal surfaces dry. Isolating the metal by coating it with paint, lacquer or wax is another good way to prevent corrosion.
Before coating a metal surface, remove all traces of rust. Then apply a primer and finish with paint. It’s best if the paint and primer are the same brand; they usually are formulated to work together. Metals such as brass, copper or aluminum are best protected with either wax or by spraying them with lacquer or clear varnish.
Rust also can attack metal in inaccessible areas. Corrosion occurs inside a home hot-water heater, for example, because the ions circulating in the water make it easy for dissolved oxygen to pull the electrons from the interior surface of the metal tank.
Rust that occurs in localized areas is called localized corrosion. There are three types: galvanic, crevice and pitting.
- Galvanic corrosion: It occurs whenever two dissimilar metals contact each other. This creates a flow of electrons between the metals that eventually causes them to disintegrate. One way to prevent this corrosion is to replace one metal piece with another that is compatible with the mating piece.
For example, many aluminum storm doors have steel rivets holding the hinges or closing piston in place. Often, corrosion starts around these fasteners, then works to the adjacent aluminum panels. Drilling the corroded fasteners out and replacing them with aluminum pop-rivets will stop the galvanic corrosion before it spreads.
- Crevice corrosion: It occurs around the joints and seams of metal fixtures where dirt accumulates. By itself the dirt is not particularly harmful, but it allows moisture to collect; this causes corrosion. Joint and seam corrosion is a common occurrence on gutters and downspouts. Clean them often to keep dirt and leaves, which retain moisture, from building up. If rust is present, remove it with a flexible sanding wheel chucked in an electric drill, then prime and paint the bare metal.
- Pitting corrosion: It occurs outdoors when the wind bombards metal surfaces with minute particles of dirt, salt or sand and creates microscopic craters that retain moisture. At first, the corrosion is limited, then quickly escalates into a formidable problem. Outdoor electrical conduits, television antenna masts, metal windows and doors, and children’s play equipment are a few of the items that receive constant assault from air-borne particles and are subject to pit corrosion. This type of corrosion is severe near the seashore and is most noticeable on the side of the house that faces the prevailing winds. Check exposed metal surfaces often; sand and paint them if they show signs of pitting.
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Your query is vastly problematic. I wouldn’t expect Moses himself could detect a groovy rejoinder for your query.
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paint it
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