Particulate mixtures for forming polycrystalline compacts and earth-boring tools including polycrystalline compacts having material disposed in interstitial spaces therein
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United States of America Patent
Stats
-
Jan 30, 2018
Issued Date -
N/A
app pub date -
Sep 18, 2015
filing date -
Aug 7, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Polycrystalline compacts include smaller and larger hard grains that are interbonded to form a polycrystalline hard material. The larger grains may be at least about 33 times larger than the smaller grains. An interstitial material comprising one or more of a boride, a carbide, a nitride, a metal carbonate, a metal bicarbonate, and a non-catalytic metal may be disposed between the grains. The compacts may be used as cutting elements for earth-boring tools such as drill bits, and may be disposed on a substrate. A particulate mixture includes a first plurality of grains of hard material having a coating formed over the grains of hard material. The coating comprises at least one of a boride, a carbide, a nitride, a metal carbonate, a metal bicarbonate, and a non-catalytic metal. A second plurality of grains of hard material has a grain size at least 33 times larger than the first plurality.
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International Classification(s)
- 2015 Application Filing Year
- C01C Class
- 75 Applications Filed
- 54 Patents Issued To-Date
- 72 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- C01C Class
- 0 % this patent is cited more than
- 7 Age
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