Olga, show my 11 year old flair ?? Or can you believe it in a word? I cannot vouch for who stores where and how and what does next ..
Here about the knife, as an example is said, but very interesting in all areas and so, for general development.
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What is rust?
First of all, let's figure out what rust is. Rust is called iron oxide, denoted by the chemical formula Fe2O3. It is formed when the iron from your steel blade combines with oxygen from the atmosphere. More specifically, rust is a hydrated iron (III) oxide, also known as iron oxide (Fe2O3), it occurs when iron reacts with oxygen and water - this reaction is called oxidation.
Now that we know that this reddish surface is iron oxide, let's figure out under what conditions the knife rusts. This requires three things: oxygen, iron and water. Oxygen comes from the atmosphere and is present in the air around us. Iron is the main material in steel blades. The water does not have to be liquid. There will be enough humid air to cause rust.
Why do some steel rust more?
Most types of blade steels can be classified as either stainless or carbon steel.
Carbon steel is a steel with a higher carbon content. Steels can contain impurities of various metals. However, it is the percentage of carbon contained in the blade that plays a major role in the oxidation process. Typically, carbon steel blades contain 0.5 to 1.5% carbon. This makes the knife very strong and durable. But due to the fact that carbon also reacts with atmospheric oxygen, blades made of such steel are much more susceptible to corrosion.
Stainless steel blades contain various additives, such as chromium, which is typically 12.5% to 13.5%. This creates an oxide layer on the blade surface that prevents further oxidation of the steel. As a result, corrosion slows down, which is why steel is called "stainless". Stainless steel knives are a good choice for aggressive environments like the sea. However, stainless steel knives can also rust, especially in harsh conditions.
There are other blade materials such as titanium or ceramic. Since they do not contain iron, they will not rust and the knife will not corrode. Another factor to consider is the coating of the blade. Some knives have special coatings such as titanium nitride or aluminum oxide that make them more resistant to corrosion.
Is rust dangerous?
Rust itself is not dangerous, and you will not die if you eat something cut with a rusty knife. However, especially severe corrosion can reduce the quality of the blade and make it more brittle.
Rust removal methods
1. CHEMICAL SOLVENTS
There are many types of chemicals that can be used to remove rust from your knife. WD-40 is popular (however, it is toxic, so it is better not to cut the food with this knife later).
Step 1: Clean the knife from any stains or dirt.
Step 2: Spray the blade with solvent.
Step 3: Use fine sandpaper to remove any rust spots on the blade.
Step 4: Repeat as needed, then wipe, rinse and dry the knife.
2. SODA
Step 1: Soak the corroded area with water and sprinkle with baking soda. The baking soda should stick to the wet area. Tap gently with a knife so that the excess falls off.
Step 2: Use a damp cleaning pad to scrub the area covered with baking soda.
Step 3: After a few minutes of cleaning, the rust should be gone. Repeat as needed, then rinse the knife with water and dry with a cloth.
3. VINEGAR
Step 1: Pour vinegar into a wide container.
Step 2: Dip the knife (or just the blade) into the vinegar. Hold for 5 minutes. It is better not to leave it too long, it can damage the blade.
Step 3: Wipe the blade with a cloth. Then rinse and dry the knife.
4. PREDICTION PAPER
Fine grit sandpaper (3000 grit) usually works well with small rust spots.Just take a small piece of fine sandpaper and gently rub the corroded stain with it until it disappears. Make sure to use fine sandpaper. Otherwise, the finish of the blade or the blade itself can be damaged, in particular, it can be scratched or blunt.
5. POTATO
Potatoes contain oxalic acid, which can dissolve rust. You can leave the knife between two potato halves for several hours. And then wipe off the rust with a cloth.
6. BOW
Onions contain sulfenic acids, which can help dissolve iron oxide. You need to act in the same way as in the case of potatoes.
Conclusion
To ensure that your favorite knife will never undergo corrosion, it must be properly looked after.
The most basic tips for knife care:
First, wash after use. Whether you have been cutting wood or gutting fish, you will always have some dirt on your blade. Remove residue with water and the soft side of a sponge, then dry thoroughly with a cloth. Don't skip this step, or your knife will rust. Second, store it properly. Indoors, the knife is best stored in some kind of dry box or cabinet. If you are outdoors, keep it in your pocket, sheath, or special cases. Try to keep moisture out. Use a special knife oil to prevent contact between the blade and the atmosphere.
Hopefully this article will help you remove rust from your knife. Remember, the best way to protect your knife from rust is to prevent rust. Make sure you keep your knife in top condition at all times so that it performs as best as possible
Ludmila, I replied, in general, this is the norm, and there is no need to panic ..
