Rust removal methods include white vinegar, lime with salt and baking soda.
White vinegar is no stranger to rust removal. Although white vinegar is only a common condiment in life, it is a very acidic item, so it will not affect the normal use of kitchen knives after rust removal with white vinegar. You just need to soak the kitchen knife in white vinegar for a few hours, and then clean the rust with a rag. If it is not cleaned, it will continue to soak, and the effect will be obvious after repeated soaking.
Sprinkle salt on the rusty part of iron products, and then pour the prepared lime juice on it to cover the surface of iron products. Then after two or three hours, clean the mixture of salt and lime juice on the surface, and then wipe the surface with lime skin, which can effectively clean up some residual rust on the surface. Of course, lemon can be used instead of lime, and the effect is also very good.
Causes of rust
Mainly due to electrochemical corrosion and air oxidation, pure metal or active metal is mainly due to the oxidation reaction between metal surface and oxygen in the air, resulting in metal oxide and rust on the metal surface. If there are many impurities in the metal, the impurities will form chemical primary cells with the metal, and electrochemical corrosion will occur, thus oxidizing the metal into metal oxides.
Iron rusts because it reacts with oxygen and water in humid air, which is related to oxygen and water. If both are available at the same time, it is easy to rust. Rusting is a chemical reaction, which is essentially an oxidation reaction of metals. The most common rust phenomenon is that iron products are exposed to air for a long time and react with oxygen, or are corroded by oxygen in water to become oxides.