Characteristics of Nanoceramic Materials
Nanoceramic materials are composite materials created by incorporating nanoscale ceramic particles, fibers, whiskers, and other materials into a ceramic matrix to improve its properties. Below are some detailed information about nanoceramic materials:
Performance Characteristics:
- Surface Effect: The ratio of the number of surface atoms to the total number of atoms in a nanoparticle increases dramatically as the particle size decreases, leading to changes in surface properties such as increased surface energy and enhanced surface activity. This gives nanoceramic materials unique properties in surface adsorption and catalysis.
- Volume Effect: Due to the extremely small size of nanoparticles, the number of atoms they contain is very small, and their corresponding mass is also extremely small. This leads to many phenomena that cannot be explained by the properties of bulk materials composed of infinite atoms. For example, the melting point, magnetic properties, and optical properties of nanoceramic materials may change.
- Quantum Size Effect: When the size of nanoparticles decreases to a certain value, the electron energy levels near the metal particle interface change from quasi-continuous to discrete levels. Furthermore, the presence of discrete molecular orbital energy levels in nanosemiconductor particles widens the energy gap. This gives nanoceramic materials unique properties in electron transport, optical absorption, and emission.
- Excellent Mechanical Properties: Nanoceramics exhibit high hardness, strength, and fracture toughness. For example, nanostructured ceramics enhance their mechanical properties by modifying their microstructure, making them more resistant to external forces and deformation than traditional ceramics.
- Excellent High-Temperature Performance: Nanoceramics exhibit excellent high-temperature stability, oxidation resistance, and thermal shock resistance, maintaining high performance even in high-temperature environments and making them suitable for high-temperature applications.
- Superplasticity: Under certain conditions, nanoceramics can exhibit superplasticity, meaning they can undergo significant deformation under relatively low stress, facilitating their molding and processing.
Ultrasonic spraying technology is an advanced preparation process for achieving high-performance nano ceramic coatings. This technology is particularly suitable for handling suspensions containing nanoscale ceramic particles (such as zirconia, alumina, etc.), and can effectively solve the problem of uneven spraying caused by the aggregation and settling of nanoparticles.
The core principle is to use high-frequency sound wave energy to atomize the suspension into uniformly sized and fine micrometer sized droplets, and deposit them uniformly on the surface of the substrate. This non-contact spraying method avoids nozzle clogging and can accurately control the thickness and shape of the coating. Through this process, nano ceramic coatings with dense structure, controllable porosity, and thickness at the micrometer or even sub micrometer level can be prepared.
This high-quality coating plays a crucial role in many industrial fields. For example, electrolyte layers, thermal barrier coatings, wear-resistant and corrosion-resistant coatings, and functional ceramic films used in the preparation of solid oxide fuel cells (SOFCs). Ultrasonic spraying not only ensures excellent microstructure and performance of the coating, but also significantly improves material utilization and production consistency, providing a reliable technical path for the development of new generation high-performance ceramic components.
About Cheersonic
Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.
Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.
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