基于国产六面顶压机的二级6-8型大腔体静高压装置(上)

Two stage 6-8 Type Large Cavity Static High Pressure Device Based on the Domestic Cubic Press

主要介绍基于国产六面顶压机构建的二级6-8型大腔体静高压装置的力学结构,压力标定,加热组装设计,温度标定,以及采用金刚石复合材料作为二级顶锤产生超高压的一些探索性工作。一系列的结果表明,基于六面顶压机的二级增压装置的研发成功,促进了国内高压科学与技术及新型超硬材料的发展。实验表明,自行研制的多晶金刚石-硬质合金复合末级压砧可使基于国产六面项压机构架的二级加压系统的压力产生上限从约20 GPa提高到35 GPa以上,拓展了国内大腔体静高压技术的压力产生范围。应用这一技术,我们期望经过末级压砧材料与压腔设计的进一步优化,在基于国产六面顶压机的二级6-8型大腔体静高压装置压腔中产生超过50 GPa的高压。

The mechanical structure,pressure calibration,heating assembly design and temperature calibration of two stage 6-8 type large cavity static high pressure device based on the domestic cubic press are introduced in this article.Some exploratory work to ob-tain ultrahigh pressure by using PDC as two-stage anvils has also been conducted.A se-ries of results show that the successful development of the two stage 6-8 type large cavity static high pressure device based on the domestic cubic press promotes the development of domestic high pressure science and technology and the new type of superhard materials. Experiment shows that the self developed polycrystalline diamond-cemented carbide com-posite end-stage anvil can increase the press generation limit of the two stage 6-8 type large cavity static high pressure device based on the domestic cubic press from around 20 GPa to over 35 GPa.Therefore,the press generation range of domestic large cavity static high pressure device has been expanded.We are expecting to furthter potimize the end-stage anvil materail and the pressure cavity design to generate high press of 50 GPa in the two stage 6-8 type large cavity static high pressure device based on the domestic cubic press through application of this technique.