Insulating Ceramics

Insulating ceramics play a crucial role in various industries due to their exceptional electrical insulating properties. These ceramics are designed to inhibit the flow of electric current, making them ideal for applications that require electrical insulation. Common insulating ceramics include alumina (Al₂O₃), boron nitride (BN), aluminum nitride (AlN), and Silicon nitride (Si₃N₄).

Alumina (Al₂O₃):

Alumina is one of the most widely used insulating ceramics. It is known for its high mechanical strength, thermal stability, and excellent insulating properties. Alumina is often used in electronic substrates, spark plugs, and various electrical components due to its ability to withstand high temperatures and electrical insulation.

Boron Nitride (BN):

Boron nitride is another significant insulating ceramic. It exhibits exceptional thermal conductivity while maintaining excellent electrical insulation. This unique combination makes BN suitable for high-performance electronics and thermal management applications. Additionally, boron nitride has good chemical stability and can be used in harsh environments.

Aluminum Nitride (AlN):

Aluminum nitride is valued for its high thermal conductivity and electrical insulation properties. It is commonly used in semiconductor devices, heat sinks, and electronic substrates. AlN's ability to dissipate heat effectively while providing electrical insulation makes it indispensable in high-power electronic applications.

Silicon nitride (Si₃N₄):

Silicon nitride is renowned for its high strength, toughness, and excellent electrical insulating properties. It is used in a variety of applications, including bearings, cutting tools, and electronic components. Si₃N₄'s combination of mechanical and electrical properties makes it ideal for demanding environments where both insulation and durability are required.

Zirconia (ZrO₂):

Zirconia is another ceramic material with noteworthy insulating properties. At room temperature, zirconia acts as an excellent insulator. However, it exhibits a unique characteristic of becoming conductive at high temperatures. This property allows zirconia to be used in applications where variable conductivity is required, such as in oxygen sensors and fuel cells.

Electrical properties of insulating ceramics:

We also produce ESD Safe ceramic.

ESD is short for electrostatic discharge.

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