Development of high pressure and high temperature apparatus with a new diamond composite (ADC).

一种新型金刚石复合材料（ADC）用于MA6-8高压装置的二级砧块。发现ADC砧具有相当高的x射线透过率，同时它也具有很高的电阻率。针对ADC的实际应用，开发了一种由4个ADC + 4个WC组成的“混合顶砧系统”。实验结果表明，该系统可以在30gpa和1500cc的温度下进行实验。结果表明，该系统可用于同步辐射压力和温度下的x射线原位测量。对深部地幔条件下硅酸盐矿物在现今混合铁砧体系下的转化作了一些重要的观察。

A newly developed diamond composite (ADC)has been used for the second-stage anvil cubes for MA6-8 high pressure apparatus. The ADC anvil was found to have quite high X-ray transmissivity, while it has also high electrical resistivity. A"hybrid anvil system"with four ADC plus four WC anvil set has been developed for practical use of ADC.It was demonstrated that this system can be used for the experiments at 30 GPa, and 1500ﾟC.It was also shown that this system is useful for in-situ X-ray measurements under pressure and temperature with synchrotron radiation. Some important observations have been made on the transformations of silicate minerals under the deep mantle conditions with the present hybrid anvil system.