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The reason for this is because rust is weaker than iron and decreases strength. Iron rust flakes off and has holes in it that allow water and air to further corrode deeper layers of iron (like a pile of potato chips). Aluminium, stainless steel and other metals form a complete continuous layer and prevent further corrosion. It is not because of reduced surface area if anything the surface area is increased (especially with iron)
AnswerI believe its because the overall surface area of the bar is decreased, hence the structural integrity of the bar is compromised. Strangely enough, when aluminum rusts the aluminum oxide on the surface of the metal increases resistance to further corrosion without reducing the surface area.love Tim xxx
What else can I help you with?
Why would an iron bar rust in the rain?
The iron would react with the oxygen in the water to make iron oxide, or rust.
What is keeper and its use in magnetism?
A keeper is a iron or a steel bar that is used to retain the strength of magnet.
Why is a iron bar placed in a solenoid?
An iron bar is placed in a solenoid to increase the magnetic field strength produced by the solenoid. The iron bar becomes magnetized by the solenoid's magnetic field, enhancing the overall magnetic effect. This is commonly used in devices like electromagnets to amplify their magnetic strength.
How can you tell the difference between a bar of iron a bar of copper and a magnet?
You can differentiate between a bar of iron and a bar of copper by testing their magnetic properties - iron is attracted to magnets, while copper is not. A bar magnet will attract small iron objects, while a bar of copper will not be attracted.
How many kg is iron bar?
The weight of an iron bar can vary depending on its dimensions and density. However, a common estimate for a standard iron bar is around 7.85 kg per meter in length for a bar with a diameter of 25 mm.
Why the rusting of an iron bar decrease the strength of the bar?
When rusting occurs, some of the outer metal converts to a crumbly iron oxide that doesn't have the same strength as the metal. The deeper the rusting goes into the metal , the weaker the bar will become.
Why would an iron bar rust in the rain?
The iron would react with the oxygen in the water to make iron oxide, or rust.
Iron bar rust how is the balance?
Rust is formed from Fe2O3.nH2O and Fe(OH)3.
What type of material rust?
metal,iron, nails ,bar, steel,rod
Why the rusting of an iron bar decreases the strength of the bar?
When rusting occurs, some of the outer metal converts to a crumbly iron oxide that doesn't have the same strength as the metal. The deeper the rusting goes into the metal , the weaker the bar will become.
What happens to the molecules when a steel bar is left outside and starts rusting?
The molecules of iron combine with molecules of oxygen to form molecules of iron oxide- or rust.
Why does the rusting of iron make the iron thinner and thinner?
When rusting occurs, some of the outer metal converts to a crumbly iron oxide that doesn't have the same strength as the metal. The deeper the rusting goes into the metal , the weaker the bar will become.
What is keeper and its use in magnetism?
A keeper is a iron or a steel bar that is used to retain the strength of magnet.
Why is a iron bar placed in a solenoid?
An iron bar is placed in a solenoid to increase the magnetic field strength produced by the solenoid. The iron bar becomes magnetized by the solenoid's magnetic field, enhancing the overall magnetic effect. This is commonly used in devices like electromagnets to amplify their magnetic strength.
Why is magnetism induced into an iron bar placed near a magnet?
When an iron bar is placed near a magnet, the magnetic field of the magnet aligns the magnetic domains within the iron bar. This alignment increases the overall magnetic field strength of the iron bar, effectively inducing magnetism in the bar.
What will happen when combining of iron with oxygen and moisture?
When iron combines with oxygen and moisture, it will undergo a chemical reaction called oxidation. This process will lead to the formation of iron oxide, commonly known as rust. Rust weakens the iron, causing it to corrode and deteriorate over time.
What happens to the strength of an electromagnetic field when you increase the current flowing through the coil of wire around an iron bar?
Increasing the current flowing through the coil of wire around an iron bar will increase the strength of the magnetic field produced by the electromagnet. This is because magnetic field strength is directly proportional to the current flowing through the coil.
