Diy Black Oxide Coating

Easily spot blacken steel not stainless or iron.

Diy black oxide coating.

It is an activator for use before blackening. Black oxide is a finish applied to ferrous metals that provides rust protection. The black oxide finish makes the metal surface porous enabling it to hold a thin layer of oil. 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 application of oil wax or lacquer will bring the corrosion resistance up to par with the heated processes. It s the oil that prevents rust from forming on the metal. The gel keeps the blackener in place. The reaction between the iron of the ferrous alloy and the hot oxide bath produces a magnitite fe3 o4 on the actual surface of the part.

The sealant usually oil finds its way into the pores of the black oxide coating where it is held in close contact with the metal substrate. Simply apply the black oxide gel where you want the blackening to occur. Seal with caswell sealer for a dry. To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax.

Certain hardened or specialized steels can prove challenging to blacken with our black oxide solution only blackening to a grey color. It is used to add mild corrosion resistance for appearance and to minimize light reflection. Normal oxide coating was done with heat and chemical baths that still could not prevent the corrosion over time. Black oxide gel kit.

Black oxide activator 1 quart makes 2 5 gallons black oxide activator product does not perform blackening. The metal blackening system was designed for the diy market to accurately duplicate the look and feel of black oxide phosphate finishes on automotive under hood and under car hardware bracket hinges etc. Aside from aesthetics it does make parts look nice the black deposit on the workpiece is actually a means to hold a sealant which is the business end of blackening. Leave it on the part for 1 3 minutes and rinse off.

Black oxide is a conversion coating formed by a chemical reaction produced when parts are immersed in the alkaline aqueous salt solution operated at approximately 285 degrees f. If you want to make a black oxide finish yourself the cold process black oxide system is a safe alternative.