600~760 ℃范围内超高压力的测定铅熔点法

Measurement of High Pressure at the Temperature of 600 to 760 ℃ by Melting Point of Plumbum

1.
Institute of Applied Physics, Chengdu University of Science and Technology, Chengdu 610065, China;
2.
Institute of High-Temperature and High-Pressure Physics, Chengdu University of Science and Technology, Chengdu 610065, China

摘要: 在DS 6800A压机上，用NiC-NiSi热电偶测量出高压腔内铅的熔点，再根据铅的液-固相变曲线得出所对应的压力。在600~760 ℃温度范围内，测定出高压腔内压力（1.27~6.62 GPa）与油压的对应关系。对两种不同传压介质腔内压力测定的结果表明，采用NaCl作内层传压介质后，其传压效果比不用NaCl只用叶腊石的情况提高了10%。
- 超高压力 /
- 熔点 /
- 铅
Abstract: Melting points of Pb under high pressure were measured with the NiCr-NiSi thermocouple, using the cubic anvil type high pressure apparatus, so that the relation between pressure in cell and oil pressure was obtained according to the melting curve of Pb in the range from 600 to 760 ℃ for two assemblies of pressure mediums. The contrast result was clear, that the pressure in the cell was higher about 10%, when NaCl was used as the internal pressure medium than the pyrophylite was used under the same oil pressure.
- High pressure /
- melting point /
- plumbum