中文摘要：

在温度为389～1245℃和砧面压力为1．0～5．0GPa的条件下，利用金属高压熔融标定法，采用Cu、Al、Zn和Pb四种金属，对YJ-3000t型紧装式六面顶大腔体高温高压实验装置样品室内的实际压力进行了标定。通过对由四种金属所获得的标定结果的多项式三维模拟，获得了以叶蜡石为外传压介质、氧化铝为内传压介质的情况下，由砧面压力和样品室温度估算样品室内实际压力的定量表达武。该结果可为今后该设备上类似实验组装中样品腔内实际压力的估算提供方便准确的压力标。

英文摘要：

The pressure in the sample cell of YJ-3000t multi-anvil was calibrated in the temperature and anvil surface pressure ranges of 389～1245℃ and 1.00～5. 00 GPa by using the high-pressure melting curves of four metals.Cu,A1,Pb and Zn. Through the polynomial fitting of the calibration results for the four metals,we obtain a formula which is suitable for the experimental configuration in which the moderately fired pyrophillite and alumina were used as the outer and inner pressure-transmitting medium, respectively,and which can be used to calculate the practical pressure in the sample cell using the measured cell temperature and the anvil surface pressure reading. We hope that in future, the results obtained in the present work could provide a convenient and reliable pressure calibration for the sample cell of the similar experimental configuration in YJ-3000t multi-anvil at high-temperature and highpressure.