【摘要】 在1.0、2 .0GPa和873～12 2 3K的温压条件下,借助于12 6 0阻抗增益相位分析仪测定了叶蜡石的电导率,并用阻抗谱原理分析了其微观导电机制。实验结果表明:样品的电导率对频率具有很强的依赖性;电阻率随着温度的升高而减小,电导率随着温度升高而增大,logσ与1/T之间符合Arrenhius线性关系;叶蜡石在1.0GPa和2 .0GPa的压力下脱水温度分别为10 74K和110 1K。根据本次获得的电导率实验结果并结合前人对滑石族所做的工作,得出了与前人不同的结论:滑石族矿物脱水电导率曲线出现了转折点。更多还原

【Abstract】 The electric conductivity of pyrophyllite was measured by means of Sarltron-1260 frequency and phase impedance spectroscopic analyzer under the condition of 1.0, 2.0 GPa and 873～1?223 K and on the basis of microcosmic mechanism analysis. The experimental results indicate that (1) the electric conductivity of the sample depends on frequency, (2) the relationship between electric conductivity and temperature is in linear accord with the Arrenhius equation, and (3) the dehydration temperature of pyrophyllite is 1?074 K and 1?101 K at 1.0 GPa and 2.0 GPa, respectively. A conclusion different from previous conclusions has been drawn, which holds that an inflexion appears after dehydration.更多还原