Oxide ceramicsAluminum oxide (Al ₂ O3) ceramics:
characteristic:
High hardness, with a Mohs hardness of around 9, second only to diamond, it has excellent wear resistance and can effectively resist friction and wear. It is commonly used for surface protection of components in aircraft engines that are prone to relative motion and wear.
Good chemical stability, able to maintain stability in various chemical environments such as high temperature, acid and alkali, and not easily react with other substances. It can effectively protect the substrate material from corrosion, and can play a good protective role when used in special chemical environment areas of some aerospace equipment.
It has high insulation properties and is an ideal insulation material choice for parts of aerospace electrical systems that require electrical insulation. It can ensure circuit safety and avoid problems such as short circuits.
Application case: Commonly used in mechanical transmission components of aircraft engines, specific electronic component peripherals, etc., to provide wear-resistant, corrosion-resistant, and insulation protection for the components.
Zirconia (ZrO ₂) ceramics:
characteristic:
The most prominent feature is its excellent high temperature resistance and insulation performance, especially zirconia stabilized with rare earth elements such as yttrium (YSZ), which has low thermal conductivity and can form effective thermal barriers on the surface of high-temperature components, reducing the substrate temperature and enabling it to play an important insulation role in high-temperature areas of aircraft engines such as combustion chambers and turbine blades.
Having good chemical stability, it can maintain its performance stability for a long time in complex chemical environments such as high-temperature gas in aircraft engines, ensuring the continuous performance of insulation and other functions.
Zirconia ceramics have a certain degree of toughness. Compared to other ceramic materials, zirconia ceramics have relatively strong resistance to crack propagation when subjected to certain mechanical stresses, but overall they still belong to the category of brittle materials.
Application case: Widely used in high-temperature components such as combustion chambers and turbine blades of aircraft engines, these components are guaranteed to operate normally in high-temperature environments through thermal barrier coatings, improving engine performance and service life.
Magnesium oxide (MgO) ceramics:
characteristic:
Magnesium oxide ceramics have excellent high temperature resistance, with a melting point of around 2800 ℃, and can maintain stability in high temperature environments. They can be used for special components in the aerospace industry that require extremely high temperature tolerance.
Good chemical stability, with certain resistance to many corrosive substances, and can play a protective role in certain specific chemical corrosion environments.
It has good electrical insulation properties and can be used as an alternative material in aerospace applications involving electrical insulation requirements.
Application case: It has been applied in some high-temperature furnace linings, high-temperature insulation components of spacecraft, etc., to help resist high temperatures and related chemical corrosion, and ensure the normal operation of equipment.
Nitride ceramics
Silicon nitride (Si ∝ N ₄) ceramics:
characteristic:
It has excellent high-temperature strength and hardness, and can maintain high mechanical performance in high-temperature environments. It can withstand the large mechanical stress generated during the operation of high-temperature components such as aircraft engines, and has potential application value in high-temperature and high stress components such as turbochargers in engines.
Good antioxidant performance, able to prevent further oxidation by forming a dense oxide film on the surface in high-temperature aerobic environments, extending the service life of itself and substrate components, and adapting to the complex environment of high temperature and oxygen content changes in the aerospace field.
The thermal conductivity is relatively moderate, which can not only play a certain role in heat transfer in some areas that require heat dissipation, but also assist in insulation in specific situations, and has certain thermal management functions.
Application case: It can be applied to turbochargers, high-temperature bearings, and other parts of aircraft engines, providing high-temperature strength protection, anti-oxidation protection, and certain thermal management functions for components.
Boron nitride (BN) ceramics:
characteristic:
It has multiple crystal structures, among which hexagonal boron nitride (h-BN) has a graphite like layered structure and excellent lubrication performance. It is applied on the surface of components in aerospace equipment that have relative motion and need to reduce friction coefficient, which can effectively reduce friction and wear, improve the operating efficiency and service life of components.
Good high-temperature stability, able to maintain stable performance at higher temperatures, and possessing good chemical inertness, which has a good effect on resisting chemical erosion in high-temperature environments.
Partial crystalline boron nitride ceramics also have good electrical insulation and thermal conductivity, and can play corresponding roles in areas that require insulation or thermal conductivity according to different aerospace application scenarios.
Application case: Commonly used on the surface of some sliding parts of aircraft engines as a lubricating coating to reduce friction; It is also applied in high-temperature insulation parts of spacecraft to ensure electrical system safety and thermal environment stability.
Carbide ceramic
Silicon carbide (SiC) ceramics:
characteristic:
The hardness is extremely high, with a Mohs hardness of about 9.5, making it a very wear-resistant ceramic material. It performs outstandingly in the protection of components against high-intensity friction and wear in the aerospace field, and can greatly extend the wear life of components.
It has excellent high-temperature performance, strong resistance to high temperatures and oxidation, and can maintain stable structure and performance in high-temperature environments, suitable for high-temperature applications such as aircraft engines and spacecraft thermal protection.
It has high thermal conductivity and can be used as a heat dissipation material on some components that require heat dissipation. At the same time, it also has certain chemical stability and can resist corrosion from various chemical substances.
Application case: It can be used as a wear-resistant, high-temperature resistant, and anti-oxidation coating in the combustion chamber lining, turbine blades, and other parts of aircraft engines; It is also applied in thermal protection systems of spacecraft, engine hot end components, and other places to ensure the performance and structural integrity of components in high-temperature environments.
Titanium carbide (TiC) ceramics:
characteristic:
High hardness and relatively low density, while ensuring wear resistance, to some extent meet the requirements of lightweight materials in the aerospace industry. It has application advantages in some components that have certain weight limitations but require wear protection.
Has good chemical stability, is not easily corroded in various chemical environments, and can provide reliable protection for the substrate material.
The compatibility with metals is relatively good, and when preparing coatings, it is possible to achieve good bonding with the metal substrate through some process methods, improving the adhesion stability of the coating.
Application case: It can be applied to the surface of some small, wear-resistant and weight sensitive metal components in aerospace equipment, such as some precision transmission components, to enhance the wear resistance and corrosion resistance of the components through coating.
Boride ceramics
Zirconium boride (ZrB ₂) ceramics:
characteristic:
Having an extremely high melting point (about 3246 ℃), it is currently known as one of the ceramic materials with outstanding high temperature resistance. It has important application potential in the aerospace industry to cope with extreme high temperature environments, such as the ultra-high temperature situation faced by spacecraft during re-entry into the atmosphere.
Good chemical stability, able to maintain its own structure and performance stability in extreme environments such as high temperature and strong oxidation, effectively protecting the substrate material from harsh environmental damage.
It has a certain degree of hardness and good conductivity, and can be used as a conductive material in areas that require wear-resistant protection according to different application scenarios.
Application case: It is expected to be applied to the thermal protection system of future hypersonic aircraft, key high-temperature protection parts during spacecraft re-entry into the atmosphere, etc., to help resist extreme high temperatures and ensure the safe operation of the aircraft.
Titanium boride (TiB ₂) ceramics:
characteristic:
High hardness and strong wear resistance, it can provide strong wear protection and extend the service life of components that need to resist strong friction and wear in aerospace equipment, such as some machining tools and wear-resistant component surfaces.
It has good chemical stability and high-temperature performance, and can maintain stability in complex environments such as high temperature and chemical corrosion, ensuring the continuous performance of its wear resistance, protection and other functions.
Excellent conductivity, it can be used as a conductive material in some aerospace electronic equipment conductive components or parts that require conductive connections, replacing some traditional metal conductive materials and achieving specific functional requirements.
Application case: Commonly used in the aerospace industry for tool coating, wear-resistant component surface coating, and conductive connection parts of some electronic devices, to enhance the wear resistance, conductivity, and other performance of components.

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