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Effect of precompression on pressure-transmitting efficiency of pyrophyllite gaskets.
- Source :
-
High Pressure Research . Sep2007, Vol. 27 Issue 3, p367-374. 8p. 2 Diagrams, 1 Chart, 3 Graphs. - Publication Year :
- 2007
-
Abstract
- Pyrophyllite is widely used both as a gasket material and as a pressure-transmitting medium, especially for a large-volume press. Its pressure-transmitting efficiency mainly depends on the following factors: geometry of anvil and pyrophyllite block, chemical composition, density and strength. For a long time, most studies have been devoted to the first two factors, whereas the third one has been studied less. In this work, we report that the pressure-transmitting efficiency of pyrophyllite is improved by precompressing. The results show that pyrophyllite was fully densified when the pressure reached about 1 GPa. The press load for Ba I-II transition in the cubic large-volume pressure cell is reduced more than 8×105 N by using the densified pyrophyllite, compared with the unprecompressed pyrophyllite. Namely, the press-load utilization efficiency was improved above 15% when the precompressed pyrophyllite is used as a pressure-transmitting medium. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PYROPHYLLITE
*GASKETS
*MATERIALS compression testing
*PRESSURE
*PHYSICS
Subjects
Details
- Language :
- English
- ISSN :
- 08957959
- Volume :
- 27
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- High Pressure Research
- Publication Type :
- Academic Journal
- Accession number :
- 26419547
- Full Text :
- https://doi.org/10.1080/08957950701553796