Silicon Nitride Ceramic Flat Washersmerits
Silicon nitride ceramic flat washer is a kind of high-end industrial ceramic infrastructure components with the functions of support isolation, pressure equalization buffer, insulation protection and wear-resistant gasket, which is widely used in high-temperature equipments, semiconductor machines, vacuum systems, electronic assemblies, high-speed shaft systems, corrosion-resistant connecting mechanisms and precision jigs and fixtures. As flat washers are usually subjected to long-term axial compression, surface contact friction, thermal cycling and corrosive media, the strength of the material, dimensional stability and high-temperature performance requirements are very high, and silicon nitride ceramics have significant advantages in these areas.
Description
Advantages of Silicon Nitride Ceramic Flat Washers
The high compressive strength of silicon nitride ceramics effectively prevents thickness collapse after prolonged clamping, while its high hardness significantly reduces friction and wear against shaft shoulders, nuts, or support surfaces. For high-speed shaft systems and precision tooling, it ensures long-term stability of axial clearance. The extremely low coefficient of thermal expansion of silicon nitride ceramics allows them to maintain stable inner and outer diameters even in high-temperature equipment, preventing connection loosening or changes in preload caused by thermal expansion. For semiconductor and vacuum equipment, they also prevent contamination from metal particles and oxidation, thereby enhancing system cleanliness and reliability.
- High compressive strength and resistance to deformation
- Long wear life
- High-temperature and thermal shock resistance
- Corrosion-resistant and high-purity
Applications of Silicon Nitride Ceramics
Silicon nitride ceramics have excellent mechanical, thermal and electrical properties. It is also one of the most thermodynamically stable high hardness industrial ceramic materials. It is ideal for bearing parts, especially those that need to work at high temperatures and pressures. Therefore, silicon nitride ceramic products are ideal for many industries, such as:
- Rotary ball and roller bearings
- Cutting Tools
- Engine components: valves, rocker gaskets, sealing surfaces
- Induction heating coil holder
- Turbine blades, wheel blades, buckets
- Welding and brazing fixtures
- Heating Element Assemblies
- crucible
Basic Properties of Silicon Nitride Ceramics
Silicon nitride ceramics are an inorganic ceramic material. Silicon nitride is very strong, especially hot pressed silicon nitride, which is one of the hardest materials in the world. It is characterized by high strength, low density and high temperature resistance.
- Color: Gray and Gray-Black
- Density: 3.15~3.25 g/cm3
- Hardness: HRA 92~94
- Maximum operating temperature: 1300 ~1600 °C
- Thermal conductivity: 23-25 W.(MK)-1
- Flexural strength: ≥900 Mpa
- Fracture toughness: 6~8 (Mpa.m1/2)
- Coefficient of thermal expansion (0~1400℃): 2.95~3×10-6/C
Suppliers of Silicon Nitride Ceramics
To Good Ceramics is a professional ceramic supplier, we have many years of experience in producing high quality precision ceramic parts. We utilize our experienced team and in-depth knowledge of ceramic materials to create the best precision ceramic products for our customers at competitive prices.
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