Introduction to Silicon Nitride Ceramics

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Silicon nitride ceramics are an inorganic ceramic material that is very strong, especially hot-pressed silicon nitride, which is one of the hardest materials in the world. It has the characteristics of high strength, low density, and high-temperature resistance.

The characteristics of silicon nitride ceramics are as follows

-Color: gray and gray-black

-Density: 3.15~3.25 g/cm3

-Hardness: HRA 92~94

-Maximum operating temperature: 1300 ~1600 ℃

-Thermal conductivity: 23-25 ​​W/(mK)

-Flexural strength: ≥900 MPa

-Fracture toughness: 6~8 (MPa.m1/2)

-Thermal expansion coefficient (0~1400℃): 2.95~3×10-6/℃

Application 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 an ideal choice for bearing parts, especially those that need to work under high temperatures and pressure. Therefore, silicon nitride ceramic products are ideal for many industries, such as:

-Bearing ball and roller bearings

-Cutting tools

-Engine parts: valves, rocker pads, sealing parts

-Induction heating coil brackets

-Turbine blades, vanes, buckets

-Welding and brazing fixtures

-Heating element components

-Crucibles

Edgetech is a professional ceramic supplier, we have many years of experience in producing high-quality precision ceramic parts. We use our experienced team and in-depth understanding of ceramic materials to create the best precision ceramic products for our customers at very competitive prices.