Carbon Deposits First, the black specks you see coming off into your food are not harmful. They are most likely carbon deposits. This happens due to overheating of fats and oils.
Occasionally, the seasoning on your pan may break down and leave black specks, especially if the cookware is not well-seasoned, but it is not harmful in any way.
The black residue or black specks coming off your cast iron cookware is carbon deposits formed during the cooking process. It is generally created from overheating of cooking oil or fats used while cooking, or bits of burnt food that accumulate in the pores of the cookware.
Black Oxide Finish for Cast Iron
It forms a durable, black magnetite coating that is RoHS and Mil Spec compliant. The process also avoids the reddish/black tint and white salt leaching problems commonly seen with conventional Hot Black Oxide.
Your new skillet may be have been pre-seasoned to keep it from rusting in the store. This seasoning is not meant to last forever and can start to flake after the first few meals you cook. The oil or wax coating will start to disintegrate with high heat and will not hold up for long.
Black oxide coating is the process of coating ferrous materials, stainless steel, copper, copper based alloys, zinc, materials with a chemical coating process. It takes products, and it coats them in iron oxide. This provides many benefits. First, it reduces light reflection.
Black Oxide for Cast Iron
With a uniform 0.000030 inch (1 micron) thickness, the porous crystalline structure of the black finish makes it an excellent absorbent base for a rust preventive top coat. Once sealed, the Presto Black finish resists up to 1,200 hours humidity test without chipping or peeling.
One of the simplest ways to remove the residue is by using salt. Yes, that's right, salt. Take an oily paper towel (it's best to use the same type of oil you season the pan with) and use it to rub salt over the bottom of the pan.
Brown or black spots are normally a layer of carbonization which causes food to stick to the pan during cooking.
If vinegar alone doesn't work, try making a baking soda paste by mixing three parts baking soda with one part water. Apply the paste to the scorch mark, let it sit for 10-15 minutes, then gently scrub it off with a toothbrush.
Seasoning Cast Iron
The interesting thing about cast iron is that the more you use it, the more seasoned it will become. However, as you use and clean it, it's important to habitually reseason a pan to give it a fresh, clean layer of seasoning to aid with cooking and to protect from rust.
You should only need to fully re-season your cast-iron cookware one to two times a year, but you may also want to give it some extra seasoning love anytime you cook something that requires a heavy-duty cleaning.
The best way to clean soot off painted metal is to first mix several drops of dishwashing liquid with hot water.
This iron oxide is encountered in the laboratory as a black powder. It exhibits permanent magnetism and is ferrimagnetic, but is sometimes incorrectly described as ferromagnetic. Its most extensive use is as a black pigment (see: Mars Black).
Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder.
The finish will not chip, peel, flake, or rub off:Black oxide can only be removed by mechanically or chemically removing the finish itself. Reduces light glare (reflection):Black oxide makes an excellent finished surface for moving parts such as hand tools and machine parts.
This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. Instead, the black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution.
The normal iron oxide black is the compound of iron monoixde and iron oxide, it can not be dissolved in water, and solvents such as aqueous alkali,ethanol, aether etc., only be dissolved in acid solutions.
Chemical Blacking is sometimes referred to as 'Blackening' or 'Blackodising'and is a conversion coating meaning that where in other metal finishing processes a layer is added above the substrate, here a coating is achieved through a chemical reaction between the ferrous metal and the oxidising salts used in the black ...