High-Temperature Volume & Surface Resistivity Testing (1000°C)
Technical Specifications & Test Capabilities
| Parameter / Metric | Specification Range & Accuracy | Operational Notes |
|---|---|---|
| Temperature Range | Room Temperature to 1000°C | High-stability shielded resistance furnace |
| Current Detection Range | 0.1 pA to 10 mA | Measures ultra-high resistance up to 10¹⁵ Ω |
| Voltage Source Range | ±100 V / ±1000 V | DC polarization voltage |
| Electrode Configuration | Three-ring guarded circular electrode | Guaranteed separation of surface and volume leakage |
Specimen Geometry & Preparation Guide
| Material Form | Recommended Dimensions | Dimensional Limits | Electrode & Poling Notes |
|---|---|---|---|
| Small Specimen | Diameter 12–13 mm, thickness 1 mm | Inner Ø5 mm, gap 1.5 mm, guard inner Ø8 mm / outer Ø10 mm | Fired silver or sputtered platinum electrodes |
| Large Specimen | Diameter 32–35 mm, thickness 1 mm | Inner Ø20 mm, gap 2.5 mm, guard inner Ø25 mm / outer Ø30 mm | Standard geometry for ceramic substrates and insulators |
Testing Function
The volume resistivity (ρv) of an insulating material degrades exponentially at elevated temperatures due to thermally activated ionic conduction and intrinsic carrier migration. Employing an ASTM D257 / IEC 62631 compliant three-ring guarded electrode fixture, our HTS-1000 testing platform effectively shunts surface leakage currents to ground, delivering true volume resistivity curves, I-t absorption kinetics, and activation energy calculations up to 1000°C.
Testing Conditions
Primary Instruments: HTS-1000
Standard Turnaround: Within 5 working days
Key Standards: ASTM D257 Standard Test Methods for DC Resistance or Conductance of Insulating Materials; GB/T 31838.2-2019 Solid Insulating Materials Volume Resistance and Volume Resistivity; IEC 62631-3-1 Determination of Resistive Properties (DC Methods) - Volume Resistance
Sample Requirements
Please review the detailed specimen dimensions, electrode requirements, and poling conditions in the table above. Custom dimensions and special sample geometry can be accommodated upon technical consultation.
Testing Standards
- ASTM D257 Standard Test Methods for DC Resistance or Conductance of Insulating Materials
- GB/T 31838.2-2019 Solid Insulating Materials Volume Resistance and Volume Resistivity
- IEC 62631-3-1 Determination of Resistive Properties (DC Methods) - Volume Resistance
Test Results
Clients receive comprehensive test reports with raw exported ASCII/txt data files, high-resolution curve plots (temperature spectra, impedance plots, or hysteresis loops), and experimental condition parameters stamped by our CMA accredited testing center.
Turnkey Equipment for Your Own Laboratory
Prefer in-house characterization? Every test in our laboratory is performed using MatMeas turnkey instruments. Verify measurement quality with sample testing before capital procurement.
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