POLYCRYSTALLINE DIAMOND AND METHOD FOR PRODUCING SAME

• Main Authors: SUMIYA, Hitoshi, YAMAMOTO, Katsuko, HAMAKI, Kensei, ISHIDA, Yuh
• Format: Patent
• Language: English; French; Japanese
• Published: 23.05.2019
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; BORING; CHEMISTRY; COMPOUNDS THEREOF; CRYSTAL GROWTH; INORGANIC CHEMISTRY; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; TRANSPORTING; TURNING; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

This polycrystalline diamond has a diamond single phase as a basic composition, wherein the polycrystalline diamond is configured from a plurality of diamond particles having an average grain size of 30 nm or less, and the polycrystalline diamond has a carbon dangling bond density of 10 ppm or higher. L'invention concerne des polycristaux de diamant ayant une monophase de diamant en tant que composition élémentaire. Ces polycristaux de diamant sont configurés à partir d'une pluralité de particules de diamant de diamètre moyen inférieur ou égal à 30nm, et présentent une densité de liaison pendante de carbone supérieure ou égale à １０ｐｐｍ. ダイヤモンド多結晶体は、ダイヤモンド単相を基本組成とするダイヤモンド多結晶体であって、前記ダイヤモンド多結晶体は、平均粒径が３０ｎｍ以下の複数のダイヤモンド粒子から構成され、前記ダイヤモンド多結晶体は、炭素ダングリングボンド密度が１０ｐｐｍ以上である。