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Note: High-pressure generation using nano-polycrystalline diamonds as anvil materials.
MedLine Citation:
PMID:  21721739     Owner:  NLM     Status:  In-Data-Review    
Nano-polycrystalline diamonds (NPDs) consist of nanosized diamond grains oriented in random directions. They have high toughness and isotropic mechanical properties. A NPD has neither the cleavage feature nor the anisotropy of hardness peculiar to single-crystal diamonds. Therefore, it is thought to be useful as a diamond anvil. We previously reported the usefulness of a NPD as an anvil for high-pressure development. In this study, some additional high-pressure generating tests using diamond anvils of various shapes prepared from NPDs were conducted to investigate the advantage of using NPDs for anvil applications. The results revealed that the achievable pressure value of a NPD anvil with a culet size of more than 300 μm is about 1.5 to 2 times higher than that of single-crystal diamond anvils, indicating that NPD anvils have considerable potential for large-volume diamond anvils with large culet sizes.
Y Nakamoto; M Sakata; H Sumiya; K Shimizu; T Irifune; T Matsuoka; Y Ohishi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Review of scientific instruments     Volume:  82     ISSN:  1089-7623     ISO Abbreviation:  Rev Sci Instrum     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-07-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405571     Medline TA:  Rev Sci Instrum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  066104     Citation Subset:  IM    
KYOKUGEN, Center for Quantum Science and Technology under Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, JapanElectronics and Materials R&D Lab., Sumitomo Electric Industries, 1-1-1 Koyakita, Itami, Hyogo 664-0016, JapanGeodynamics Research Center, Ehime University, 2-5 Bunkyo-cho, Matsuyama 790-8577, JapanJASRI∕Spring-8, Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5198, Japan.
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