Notes on Compressible Gasket and Bridgman-Anvil Type High Pressure Apparatus
Notes on Compressible Gasket and Bridgman-Anvil Type High Pressure Apparatus
复制标题
可压缩垫片和布里奇曼砧式高压设备的注意事项
DOI：
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发表时间：
1972
期刊：
影响因子：
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通讯作者：
T. Aoki
中科院分区：
文献类型：
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作者：
M. Wakatsuki;K. Ichinose;T. Aoki
用一个简单的模型分析了在Bridgman砧座之间压缩的盘形垫片的挤压过程。研究表明，圆盘中的塑性流动和压力分布取决于圆盘的厚度。定义了一种归一化特征厚度，该归一化特征厚度可以通过对挤压圆盘上的厚度测量来确定每种圆盘材料的归一化特征厚度，并与材料在压力下的剪切强度进行了实验关联。根据这种关联性，提出了一种评价固体压力材料物性的简单方法。布里奇曼顶锤装置及其样品组件的设计能在100千巴至200千巴的范围内提供最佳性能。描述了使用该装置的非催化合成钻石、辉石和立方氮化硼的例子。文中还描述了顶锤断裂的一些特征。
The squeezing process of a disc-shaped gasket, which is compressed between Bridgman anvils, is analyzed by a simple model. It is made clear that plastic flow and pressure distribution in the disc is governed by its thickness. A normalized characteristic thickness, which can be determined for each disc material by thickness measurement on squeezed discs, is defined and correlated experimentally with shear strength of the material under pressure. According to the correlation, a simple method is developed to evaluate substances for solid pressure materials. A Bridgman anvil apparatus and sample assemblies for it are so designed as to provide the best performance in a range of from 100 kbar to 200 kbar. Noncatalytic syntheses of diamond, stishovite and cubic boron nitride are described as examples of utilizing the apparatus. Some features of anvil fracture are also described.