Polycrystalline diamond and manufacturing method thereof
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United States of America Patent
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-
Jan 30, 2018
Issued Date -
N/A
app pub date -
Apr 18, 2016
filing date -
Jul 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Nano polycrystalline diamond is composed of carbon and a plurality of impurities other than carbon. A concentration of each of the plurality of impurities is not higher than 0.01 mass %, and the nano polycrystalline diamond has a crystal grain size (a maximum length) not greater than 500 nm. The nano polycrystalline diamond can be fabricated by preparing graphite in which a concentration of an impurity is not higher than 0.01 mass % and converting graphite to diamond by applying an ultra-high pressure and a high temperature to graphite.
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International Classification(s)
- 2016 Application Filing Year
- C01B Class
- 1845 Applications Filed
- 1265 Patents Issued To-Date
- 68.57 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C01B Class
- 0 % this patent is cited more than
- 7 Age
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