Volume Resistivity of Advanced Ceramics
Volume resistivity is a fundamental electrical property that defines how strongly a material opposes the flow of electric current. It is particularly critical in applications where electrical insulation, high thermal resistance, and stability in extreme environments are required—areas where advanced ceramics excel.
Ceramic materials like alumina (Al₂O₃), zirconia (ZrO₂), and silicon nitride (Si₃N₄) are widely used in electronics, aerospace, medical devices, and power systems precisely because of their outstanding insulation properties.
Sprung zu
Daten | Vergleich | Anwendungen | FAQs | Verwandte Seiten
What Is Volume Resistivity?
Volume resistivity (ρv), measured in ohm-centimeters (Ω·cm), quantifies the electrical resistance of a material across a unit cube. It differs from surface resistivity, which measures resistance along a material’s surface.
The higher the volume resistivity, the better the material functions as an insulator. For ceramics, this property is crucial in preventing electrical leakage, component failure, and signal distortion.
Why Is High Volume Resistivity Important?
Volume Resistivity Data of Key Advanced Ceramics
| Keramisches Material | Volumenwiderstand (Ω-cm) | Remarks |
|---|---|---|
| Tonerde (Al₂O₃) | ~10¹⁴ – 10¹⁶ | Stable and cost-effective insulator |
| Zirkoniumdioxid (ZrO₂) | ~10¹⁰ – 10¹² | Lower than alumina, high strength |
| ZTA20 | ~10¹¹ – 10¹³ | Toughened alumina, good compromise |
| Siliziumnitrid (Si₃N₄) | ~10¹² – 10¹⁴ | Strong mechanical + good insulation |
| Aluminiumnitrid (AlN) | ~10¹³ – 10¹⁵ | Excellent for heat + electrical use |
| Siliziumkarbid (SiC) | ~10³ – 10⁶ | Semiconductor, limited insulation |
| Beryllium-Oxid (BeO) | ~10¹³ – 10¹⁴ | High thermal + good insulation |
| Bornitrid (BN) | ~10¹² – 10¹⁵ | Stable at high temperature |
| MGC (maschinell bearbeitbare Glaskeramik) | ~10¹³ – 10¹⁴ | Machinable and insulating |
*Die Daten dienen nur als Referenz.
Brauchen Sie Hilfe bei der Auswahl der richtigen Keramik?
Selecting the right ceramic material is critical to ensuring long-term reliability and optimal performance. Whether you require boron nitride, aluminum nitride or alumina ceramic materials, our materials offer industry-leading performance, durability and precision.
Unser technisches Team ist für Sie da - kontaktieren Sie uns noch heute, um eine fachkundige, auf Ihre Bedürfnisse zugeschnittene Beratung zu erhalten.
Visualization: Volume Resistivity Comparison
*Die Daten dienen nur als Referenz.
