The main components of antioxidant coatings vary depending on application scenarios, substrate materials, and required properties. The following are some common main components:Metals and their alloys
Aluminum: Aluminum is one of the commonly used components in antioxidant coatings. In high temperature environments, aluminum coatings will preferentially react with oxygen, forming a dense layer of alumina protective film on the surface. This alumina film has high stability and can prevent oxygen from further diffusing into the substrate material, thereby providing good antioxidant protection for the substrate (such as some metal components). For example, aluminum containing anti-oxidation coatings are used on certain high-temperature components of aircraft engines.
Chromium: Chromium also has good antioxidant properties and can form a stable chromium oxide film at high temperatures. Chromium alloy coatings or chromium containing composite coatings, with their chromium oxide film, can effectively resist the erosion of oxygen and are commonly used for surface protection of high-temperature equipment in metallurgy, chemical industry, and other fields. For example, the use of chromium containing coatings on the outer surface of some high-temperature furnace tubes significantly enhances their antioxidant capacity.
Nickel based alloys: such as nickel chromium alloys, in which the nickel element itself has a certain degree of oxidation resistance. When combined with chromium, it can form a continuous and dense composite oxide film at high temperatures. Combining the advantages of both elements, it has good high-temperature oxidation resistance and is commonly used in high-temperature and high oxidation resistant components such as gas turbine blades.
Ceramic category
Aluminum oxide: Aluminum oxide ceramic coating has the characteristics of high melting point and good chemical stability. Its own structure is stable at high temperatures, which can effectively block oxygen from contacting the substrate and withstand large temperature changes. It is commonly used for anti-oxidation protection of high-temperature kiln linings, high-temperature pipelines and other parts, ensuring that these components work normally in long-term high-temperature aerobic environments.
Zirconia: Zirconia coatings not only resist oxidation, but also have advantages such as low thermal conductivity, which can play a dual role of thermal barrier and oxidation resistance at high temperatures. It is widely used in hot end components in the aerospace field, such as engine combustion chambers, to protect the substrate from high-temperature oxidation and overheating by blocking oxygen and reducing heat transfer.
Silicon carbide: Silicon carbide ceramic coating can form a thin protective film of silicon dioxide in a high-temperature oxidizing atmosphere, which can prevent oxygen from further diffusing inward. Moreover, silicon carbide itself has excellent high-temperature resistance and is commonly used on the surface of some high-temperature reaction vessels, high-temperature heating elements, etc., to enhance its antioxidant capacity and extend its service life.
Glass class
Borosilicate glass: It can soften at high temperatures and form a continuous and dense protective film on the surface of the substrate, isolating oxygen from contact with the substrate and providing antioxidant properties. Commonly used for the protection of some electronic components when working in relatively high temperature environments, such as the coating of borosilicate glass on the surface of certain high-temperature sensors, which can effectively prevent performance failures due to oxidation.
Phosphate glass: Phosphate glass coating also has good antioxidant properties. It covers the substrate at high temperatures through its own melting, spreading and other characteristics, preventing oxygen from corroding the substrate. It has applications in high-temperature antioxidant protection for some optical components, special metal parts, etc.
Composite coating composition
In order to further enhance the antioxidant performance, composite coatings are often used, such as coating a layer of intermetallic compounds (such as TiAl) on a metal substrate as a transition layer, which can improve the bonding strength between the coating and the substrate, and then coating a ceramic coating (such as aluminum oxide coating) on the outside. By utilizing the bonding advantages of intermetallic compounds and the antioxidant advantages of ceramic coatings, better antioxidant effects can be achieved, which is widely used for component protection in various high-temperature and complex working conditions with strict anti oxidation requirements.
There are also composite coatings made by mixing different ceramic components (such as zirconia and alumina in a certain proportion), which combine their respective advantages to effectively resist oxidation while also considering other properties (such as thermal stability, mechanical properties, etc.). They have applications in high-temperature equipment in the industrial field, high-temperature components in aviation and aerospace, and other areas.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K.    
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.