Silicon nitride is an inorganic, non-metallic compound of silicon and nitrogen that is used as a ceramic material. It offers high resistance against abrasion, corrosion and most chemicals.
It has the highest fracture toughness of all advanced ceramics. This makes it an excellent choice for many types of structural and mechanical applications.
The melting point of silicon nitride is about 3,452 degrees Fahrenheit (1,900 degrees Celsius). Its unique grainy crystalline structure provides exceptional strength and hardness, as well as an ability to take a very high polish for a smooth surface.
In addition, this material is characterized by a high density and low thermal expansion. It is a good choice for bearings, cylinder heads and turbochargers due to its durability and high temperature performance.
It is a very difficult material to machine and requires diamond grinding for precise features and tolerances. This makes it much more expensive than other technical ceramics.
American Elements carries a broad range of silicon nitride ceramic materials in standard or custom sizes, shapes and tempers. It can also manufacture special or customized compositions for applications where precise physical properties are critical. The company’s ceramics are available in a variety of forms, including powder, pellet, liquid and cast. They are widely used in electronics, aerospace and general industrial.