Volume Resistivity
Volume Resistivity
Volume resistivity is used to measure how strongly a material can oppose or resist the flow of electric current. Materials are categorized as having either high or low volume resistivity.
Materials such as Precision Ceramics Ultra-pure Alumina have the highest resistivity values at 1 x 1016 ohm-cm.
Materials Ranked by Volume Resistivity
CeramAlox Ultra Pure has highest volume resistivity at 1 x 1016 ohm-cm with low dielectric loss. Macor has similar electrical performance to Alumina at room temperature. Higher purity Alumina materials will maintain their electrical properties at elevated temperatures.
Alumina (Al2O3) – CeramAlox™ Ultra Pure
1 x 1016 Ohm-cm
CeramaAlox Ultra Pure is a very high purity (99.95%) grade of Alumina (Aluminum Oxide) exhibiting an exceptional combination of mechanical and electrical properties.
Shapal Hi M Soft™ - Machinable AlN
1 x 1015 Ohm-cm
Shapal Hi-M Soft is a hybrid type of machinable Aluminum Nitride (AlN) ceramic that offers high mechanical strength and thermal conductivity.
Aluminum Nitride (AlN) – CeramAlum™
1 x 1014 Ohm-cm
Aluminum Nitride (AlN) is an excellent material to use if high thermal conductivity and electrical insulation properties are required; making it an ideal material for use in thermal management and electrical applications.
Silicon Nitride (Si3N4) – CeramaSil-N™
1 x 1014 Ohm-cm
Silicon Nitride has the most versatile combination of mechanical, thermal, and electrical properties of any advanced ceramic material.
Related Properties
Fracture Toughness
The ability to resist fracture is a mechanical property of materials known as fracture toughness. For advanced ceramics it uses a critical stress intensity factor known as KIC where the fracture normally occurs at the crack terminations.
Density
Density is the mass of a material per unit volume. The unit of measurement can be expressed in different ways and is referred us as g/cm3 but another measurement value is kg/m3.
Hardness
One of the most valuable characteristics of advanced ceramics in high-performance applications is their extreme hardness. Hard ceramic materials are used for a wide range of applications in diverse fields and applications such as cutting tools for milling and grinding.