Top 5 industrial insulating ceramics materials

Introduction

In today’s industrial environment, electrical insulating ceramic materials are often used to protect various precision instruments and are widely used in engineering applications such as semiconductors and aerospace. In addition to high electrical insulation, ceramic materials also have excellent properties such as high thermal conductivity and high mechanical strength. Below I will list 5 commonly used ceramic materials with good electrical insulation and introduce their applications in industry.

Top 5 industrial insulating ceramics materials

Alumina Ceramics

Alumina ceramics are the most widely used technical ceramics with excellent properties such as wear resistance, high hardness, electrical insulation, chemical corrosion resistance, high strength and high hardness.

Further Reading: Introduction to Alumina Ceramic Materials

Dielectric strength 23.6kV/mm

Volume resistivity 10¹⁴Ω·cm

Maximum operating temperature 1765°C

Macor machinable ceramics

Macor machinable glass has ultra-high electrical insulation and vacuum properties, as well as the rare property of being machinable with metals in ceramics.

Further Reading: Introduction to Macor Machinable Glass Ceramics

Dielectric strength (AC)：45 kV/mm

Volume resistivity：10¹⁷Ω·cm

Porosity：0%

Zirconia Ceramics

Zirconium oxide ceramics are known for their excellent strength, toughness and thermal stability, and can maintain stability in extreme environments.

Further Reading: Introduction to zirconia ceramics

Dielectric strength ：15 kV/mm

Volume resistivity：10¹³Ω·cm

Maximum operating temperature：1000°C

Aluminum Nitride Ceramics

Aluminum nitride ceramic is a material with high thermal conductivity and is widely used in electronics, semiconductors and other fields.

Further Reading: Introduction to Aluminum Nitride Ceramics

Dielectric strength ：≥20 kV/mm

Volume resistivity：2.1×10¹⁶Ω·cm

Thermal conductivity ：179.2W/(m·K)

Silicon Nitride Ceramics

Silicon nitride ceramics have a smooth surface and low friction coefficient, and can maintain stability in harsh environments

Further Reading: Introduction to Silicon Nitride Ceramics

Dielectric strength ：15 kV/mm

Volume resistivity：10¹⁴Ω·cm

Maximum operating temperature ：≤1400°C

Conclusion

The above materials have their own advantages in the field of industrial insulation: Macor is known for its easy processing and high vacuum applicability; while aluminum oxide and aluminum nitride are widely used in the electronics field and semiconductors; Zirconia and silicon nitride are suitable for extremely high temperature environments; the specific material selection depends on the application requirements. If you don’t know what material is suitable for your project, please feel free to contact our experts to provide you with professional services.