Design and performance of tapered cubic anvil used for achieving higher pressure and larger sample cell.
Design and performance of tapered cubic anvil used for achieving higher pressure and larger sample cell.
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DOI：
10.1063/1.4812351
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发表时间：
2013-07
期刊：
影响因子：
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通讯作者：
Qigang Han;Wen-Ke Yang;P. Zhu;Qing-Chu Ban;Ni Yan;Qiang Zhang
中科院分区：
文献类型：
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作者：
Qigang Han;Wen-Ke Yang;P. Zhu;Qing-Chu Ban;Ni Yan;Qiang Zhang
为了提高立方高压装置的最大单元压力，我们基于块状支撑和侧向支撑的原理，开发了一种新型结构的碳化钨立方砧（锥形立方砧）。结果表明，锥形立方砧具有一定的优越性。首先，与常规顶锤相比，锥形立方顶锤可以将压力井的传递率提高到36.37%以上。其次，对常规砧进行改造后，失效裂纹率降低了11.20%左右。第三，试样孔内静高压极限可扩展至13 GPa，最大孔压比常规砧提高约73.3%。第四，锥形立方砧压缩的样品池体积可达到14.13 mm（3 mm直径× 2 mm长），分别比双级装置和金刚石砧池大3和6个数量级。这项工作代表了一种相对简单的方法来实现更高的压力和更大的样品池。
In order to increase the maximum cell pressure of the cubic high pressure apparatus, we have developed a new structure of tungsten carbide cubic anvil (tapered cubic anvil), based on the principle of massive support and lateral support. Our results indicated that the tapered cubic anvil has some advantages. First, tapered cubic anvil can push the transfer rate of pressure well into the range above 36.37% compare to the conventional anvil. Second, the rate of failure crack decreases about 11.20% after the modification of the conventional anvil. Third, the limit of static high-pressure in the sample cell can be extended to 13 GPa, which can increase the maximum cell pressure about 73.3% than that of the conventional anvil. Fourth, the volume of sample cell compressed by tapered cubic anvils can be achieved to 14.13 mm(3) (3 mm diameter × 2 mm long), which is three and six orders of magnitude larger than that of double-stage apparatus and diamond anvil cell, respectively. This work represents a relatively simple method for achieving higher pressures and larger sample cell.