Yes I do
oxygen and water
Rusting is the common chemical reaction for iron.
Coating prevent the iron from contacting air and moisture. So it prevents iron from rusting.
Chemical reaction in both happens slowly.
If it doesn't release, a common cause is the mechanism at the back wheel rusting up. It sometimes needs a proper de-rusting and cleaning.
Hot dipped zinc is one common treatment, but there are others.
In terms of the rusting of iron/steel objects - exclude oxygen and moisture. Coating iron objects with a layer of oil, grease or paint is the easiest. Keeping them in a dry and inert atmosphere is another, but not so easy or practical. A common technique is coating them with a layer of Tin or Zinc plating, which is generally referred to as "cathodic protection", where the layer of Tin or Zinc will corrode preferentially to prevent rusting. Plating with Copper or Chromium is similar to painting in so far as the iron/steel is protected from oxygen or moisture, but only so long as the plating is unbroken, otherwise it may actually promote rusting.
Metals rusting, wood or fuel burning, yeast fermenting sugar, and cellular respiration are common chemical reactions.
No-one - it is a very common natural phenomenon, it did not need to be proposed.
The most important is the destroying of iron structures.
Common (uncoated) finishing nails would work.
Metals rusting, wood or fuel burning, yeast fermenting sugar, and cellular respiration are common chemical reactions.