Water and oxygen are needed.
Air and water.
Rusting requires conditions such as moisture and air (oxygen).
Under most conditions aluminum will not rust in water. However, if the aluminum is alloyed with another metal, oxidation (rusting) could take place.
Oxygen is a very important agent needed for rusting and decaying to take place. Oxygen binds with the surface and creates water while breaking down the substance.
The conditions necessary for rusting are water (or water vapour) and air, specifically Oxygen. If one condition is absent and the other is present then rusting would not occur but if both are present then rusting will occur
Rusting occurs when iron or steel comes into contact with oxygen and water. This leads to a chemical reaction where the iron in the metal oxidizes to form iron oxide, also known as rust. Rusting is accelerated by factors such as salt, acid, and humidity in the environment.
MOISTURE AND OXYGEN
To prevent your bike chain from rusting, regularly clean and lubricate it with a bike-specific lubricant. Store your bike in a dry place and avoid riding in wet conditions whenever possible.
When Iron became in contact with water and oxygen or other strong oxidants or acids the rusting took place. The rusting is an electrochemical process which started with the transfer of electrons form iron to oxygen. If salt is present then it also accelerate the rusting process.
Rusting is a chemical reaction that iron undergoes involving water and oxygen. There is no pxygen or liquid water on the moon, and therefor nothing for the iron to react with.
Rusting is the process of formation of Iron Oxides on meatls most commonly Iron. Rusting can only take place in presence of three things : IRon , Water , and Air or Oxygen. If even one of these is absent rusting cannot occur.
Galvanized steel can take several years to rust, depending on factors like exposure to moisture, salt, and chemicals. The rate of rusting can be influenced by environmental conditions, such as humidity levels and air pollution.