GB/T 11297.10-2015 in English
VALIDTest method for curie temperature of pyroelectric materials
- Issued on:2015-12-31
- Implemented on:2016-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$88.00
Introduction
1. Standard background and update overview
GB/T11297.10-2015 "Test method for Curie temperature Tc of pyroelectric materials" was officially implemented on July 1, 2016, replacing the 1989 version of the standard. This revision mainly optimizes the scope of application of materials, the accuracy of measuring instruments, temperature measurement equipment and data recording methods to meet the development needs of materials science and testing technology.
Main updates:
- Expanded the scope of application of materials: New test requirements for pyroelectric ceramics and crystal materials such as barium strontium titanate and lead tantalate scandate.
- Improved measurement accuracy: The maximum allowable error of precision LCR meters is optimized from ±0.1% to ±0.05%, and the temperature measurement equipment uses Grade I nickel-chromium-nickel silicon thermocouples or platinum resistance to ensure the accuracy of temperature measurement.
- Simplified data recording process: The data recording method is replaced by recording at intervals of no more than 0.1℃, which improves test efficiency.
2. Comparative analysis of standard frameworks
| Standard dimensions | Requirements of the 1989 edition | Improvements of the 2015 edition |
|---|---|---|
| Scope of application | Limited to pyroelectric ceramic materials | Extended to ceramics, crystals and organic pyroelectric materials |
| Measurement instrument accuracy | LCR meter error ±0.1% | Optimized to ±0.05%, supporting higher frequency band testing |
| Data recording method | Point-by-point recording | Record every 0.1℃ |
3. Practical Application Case Analysis
Case 1: Testing the Curie temperature of lead magnesium niobate crystal
A scientific research institution used the GB/T11297.10-2015 standard to test the Curie temperature of lead magnesium niobate crystal. A precision LCR meter with a frequency of 1kHz and a nickel-chromium-nickel silicon thermocouple were used as temperature measurement equipment, and the heating rate was 0.3℃/min. The test results showed that the Curie temperature of the crystal was about 70℃, which was consistent with the theoretical prediction.
4. Implementation Suggestions
Equipment Selection:It is recommended to use a precision LCR meter with high accuracy and stability (such as Agilent E5966A) and a Grade I nickel-chromium-nickel-silicon thermocouple.Operation Specifications:During the test, the temperature of the heating furnace should be ensured to be uniform to avoid contamination or damage to the sample surface. For cleavage-resistant crystalline materials, it is recommended to cut along the pyroelectric axis.
Data Processing:Use professional data analysis software (such as OriginPro) to fit the CT curve and identify the peak value to ensure the accuracy of the test results.
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