Why does the painting a metal surface prevent corrosion?
156880
if iron comes into contact with moisture and air, it starts to rust.The surface of iron is painted because it prevents iron from coming into contact with air and moisture.
437017
anti rust paint called red oxide primer , don't forget this
116761
Passivation accomplishes two things.  First, it removes any stray particles of mild steel that may be present on the surface of the stainless steel.  Second, it builds a protective layer of corrosion on the surface of the stainless steel by slightly corroding the stainless steel itself.  \n\nThis process is desirable when the steel will be subjected to harsh environments, such as submersion or heavy exposure to seawater.
1068226
I don't know that it does in general.\n\nIt may be that the Al was easier to abrade, and give a greater surface area...say compared w/ a hard stainless steel.\n\nAbrading the surface (then cleaning w/ alcohol)  is standard protocol for applying adhesives to metals and plastics.
453985
Because they effectively bind to but also dissociate from the metal center.  They protect the metal from reaction with undesired things until something which is a better ligand comes along and knocks it off.\nIt also serves to generate low-valent or even zero-valent forms of the metal (such as palladium tetrakis).
410825
Others have had similar problems and solved them.  See the link.  In general, metals (especially iron and its alloys) rust when exposed to moisture in the presence of oxygen.  The rust is a loose collection of molecules that allow more moisture and oxygen to reach the base metal.  For example, you can shine aluminum but it will quickly dull with oxidation.  The aluminum corrosion however forms a tenacious film that protect the metal from additional corrosion.  I heard that copper (flashing?) on a rooftop can cause aluminum gutters to corode.  Various alloys of iron (steel) including heat treatments may impart various corrosion properties, however, chrome is usually added to form stainless steels that best resists rusting.  Silicon steel may have to be protected.  Good luck.
580906
Its a buffer and a metal chelating agent. \nIt prevents metallo proteases and nucleases from funcitoning fully as well as stabilizing the pH of the buffer. \n\nRegards
71181
to prevent rust/oxidation
863380
On structures made of steel which are in constant contact with sea water (ships, oil rigs and piers) the most effective protection used is from 'sacrificial protection'. Blocks of magnesium are bolted to the structure at regular intervals and the sea water attacks the magnesium in preference to the steel. (This is because magnesium is much more reactive than iron) It is a quick method and cost effective if you imagine the labour (an amount of paint) needed to protect a large ship.
762743
Anodizing relies on an electric current flowing in a liquid solution containing solids of the coating required to be deposited on in this case the aluminium.  If there is a plastic coat over the aluminium there can be no deposit made on the item.
370671
because the reflection is off the clear coat that they put on to protect the paint.
708657
Vinegar is an acid and is also a catalyst for corrosion of iron\n\nOil is hydrophobic and will prevent oxidation from occurring, therefor preserving the iron\n\nWater will promote oxidation and in turn degrade the iron to iron oxide (rust)
1027806
When shipping anything metal that has the potential to experience a salt water environment, coat the object in a substance called Cosmoline, which is a waxlike substance that prevents oxidation and corrosion.  It can be found at any Hardware store or Gun shop.
686818
stainless steel is rust proof anyway, to do this, zinc is added during the smelting process, this creates a coating over the metal and when it comes into conntact with oxygen and water it forms a clear oxide layer over the metal, hence stopping the steel from rusting
200542
There is no active ingredient per se.  The better grades of paint use titanium dioxide to create the whiteness and to assist in covering.
254607
A metal's corrosion (rusting) rate depends on its chemical properties. Some metals just take longer than others to corrode. Keep in mind that most metals have very high melting temperature, so in general high temperature doesn't contribute to the corrosion of a piece of metal just sitting in a damp space. For temperature to be of concern, it has to be around 700 degrees Celsius.\n\nI don't know much about your experiment, but you might not be using an appropriate metal sample. Most commonly found metals come with coatings or contain chemical inhibitors to prevent corrosion. Think about bikes sitting in outside in a humid (moisture-rich) environment. Manufacturers have to coat the metals to prevent this corrosion, or else no one would buy their product. This is the case with most metals. So if you just picked up something laying around the house and tried to corrode it, your experiment might not be successful. You should also be aware that only ferrous (iron) alloys rust, and the particular metal you tested might be something else.\n\nGo to google and type "rusting metal" (without the "s). The first four sites have lots of info.\n\n*It wouldn't rust in the freezer because there's no moisture in the freezer.
612801
Corrosion is the oxidation of a metal.  Oxidized metals do not possess valuable or useful properties.  That is, they are typically more brittle and less conductive.\n\nCorrosion occurs naturally and it is bad when it results in inefficiency or failure of the metal.