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POLYCRYSTALLINE DIAMOND
An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter + average grain diameter × 0.9) or less.
POLYCRYSTALLINE DIAMOND
An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter + average grain diameter × 0.9) or less.
POLYCRYSTALLINE DIAMOND
POLYKRISTALLINER DIAMANT
DIAMANT POLYCRISTALLIN
SATO TAKESHI (Autor:in) / YAMAMOTO KATSUKO (Autor:in) / TODA NAOHIRO (Autor:in) / SUMIYA HITOSHI (Autor:in) / KOBAYASHI YUTAKA (Autor:in)
24.06.2020
Patent
Elektronische Ressource
Englisch
IPC:
B05B
Sprühvorrichtungen
,
SPRAYING APPARATUS
/
B23B
Drehen
,
TURNING
/
B26F
Perforieren
,
PERFORATING
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C03B
Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle
,
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
/
C04B
Kalk
,
LIME
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2020
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