MatMeas High-Temperature Volume Resistivity of Piezoelectric Ceramic Materials
Testing Function
Volume resistivity ρv and electrical conductivity σ. The volume resistivity of piezoelectric ceramics is also related to the electric field. When the electric field strength is relatively high, the volume resistivity will decrease accordingly; therefore, the electric field strength used during measurement should not be excessively large.
Testing Principle
In the formula:
Rv — Volume resistance of the specimen (Ω);
S — Area of the specimen (m²);
t — Thickness of the specimen (m);
From Equation (1), it can be seen that the resistivity of the material can be calculated by measuring the volume resistance and dimensions of the specimen.
Testing Conditions
1. Test Parameter: ρv
2. Temperature Range: Room Temperature ~ 1100 °C
3. Testing Functions: Resistance–Temperature Curve, Resistance–Time Curve, Resistance–V Curve
4. Measurement Range: 50 ~ 10¹⁶ Ω
Sample Requirements
1. Recommended sample dimensions: φ (15–20) × (1–2) mm
2. Specimen requirement: Both major surfaces shall be coated with gold electrodes, without polarization.
3. The specimen shall be clean and dry.
Testing Standards
CB/Z 166-1979 Measurement Method for Volume Resistivity of Piezoelectric Ceramic Materials
Solid Insulating Materials — Dielectric and Resistive Properties — Part 7: Resistive Properties (DC Method) — Measurement of Volume Resistance and Volume Resistivity at Elevated Temperatures
Test Results
