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对产自新疆、内蒙古和云南的天然黑色电气石的化学成分及其对热释电效应的影响进行了测试和分析 ,对电气石产生热释电效应的机制作了简要阐述。分析表明 ,不同产地天然电气石的化学成分有较大差异 ,其中氧化铁含量对热释电效应产生显著影响。随氧化铁含量的增加 ,热释电效应明显减弱。电气石的热释电效应与其常规物理特性有较好的对应关系。通过检测电气石的密度和折射率即可间接了解电气石的热释电效应。
The chemical composition of natural black tourmaline originating from Xinjiang, Inner Mongolia and Yunnan Province and its effect on pyroelectricity are tested and analyzed. The mechanism of pyroelectric effect of tourmaline is briefly described. The analysis shows that the chemical compositions of natural tourmaline from different areas are quite different, and the content of iron oxide has a significant effect on the pyroelectric effect. With the increase of iron oxide content, the pyroelectric effect is obviously weakened. Tourmaline pyroelectric effect and its conventional physical properties have a good correspondence. Through the detection of tourmaline density and refractive index can be indirectly understand the pyroelectric effect of tourmaline.