Oxidation or Oxidation – the process of creating an oxide film using a redox reaction on a metal surface. This method is mainly used to decorate the surfaces of products made of metals and to create dielectric layers.
There are chemical, plasma, thermal and electrochemical oxidation of metals.
The specificity of the chemical method of oxidation (also known as bluing or cold / hot blackening) is the use of special solutions and oxidizing agents for surface treatment, which improves the anti-corrosion properties of the metal.
Processing the metal with thermal oxidation at high temperatures and oxygen-containing atmospheres, an oxide film is formed. This procedure is performed in a thermal oven.
The process in which iron is processed in a furnace rises at a temperature of 300 – 350 ° C and is called bluing. The blackening of low-alloy steel takes place at 300°C, and the processing of alloy steel takes place at 700°C and lasts an hour. Silicon – one of the most heat-resistant metals. For him, the oven is heated up to 800 – 1200 °C.
Plasma oxidation or micro-arc processing is a modification method in which a metal is oxidized at low temperatures in a plasma with oxygen. In this way, the appearance of oxide layers on the silicon surface is achieved.
Electrochemical oxidation or anodic oxidation is carried out in electrolyte solutions to form an oxide film. The surface of the metal during anodizing has a positive charge. This method is used to decorate the surfaces of products made from a variety of metals and alloys, most often aluminum. This technology allows you to get a surface with a more protective and wear-resistant coating.
To protect aluminum from corrosion, a chemical oxidation method should be chosen. It is one of the most accessible and cheapest processing methods.
Titanium and its alloys should be anodized, as this metal has low wear resistance. It is important to note that for silver and copper, it is better to choose a chemical method. A special solution makes it possible to change the color of the product when working with silver.
A-synthesis will help you choose the best way to process your metal. Takes into account all your wishes. The materials that are used for the oxidation of metals are of the highest quality, which allows you to do your job at a high level.
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