ALUMINUM NITRIDE-BASED POWDER AND METHOD FOR PRODUCING SAME

ALUMINUM NITRIDE-BASED POWDER AND METHOD FOR PRODUCING SAME

To provide an aluminum nitride-based powder that includes less amount of fine powder that is hard to be completely removed, has superior filling performance for a polymeric material, and also has thermal conductivity. The present invention relates to an aluminum nitride-based powder comprising alumi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HIGASHIMURA, Kazuya, TANAKA, Takamasa, NAKASHIMA, Katsumi, KUSUI, Jun, KANNO, Shuhei
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:To provide an aluminum nitride-based powder that includes less amount of fine powder that is hard to be completely removed, has superior filling performance for a polymeric material, and also has thermal conductivity. The present invention relates to an aluminum nitride-based powder comprising aluminum nitride-based particles, wherein (1) the average particle size D50 is 15 to 200 µm; (2) a content of particles having a particle size of at most 5 µm is at most 60% on a particle number basis; (3) a content of an alkaline earth metal element and a rare-earth element is at most 0.1 weight%; (4) a content of oxygen is at most 0.5 weight%; and (5) a content of silicon is at most 1000 ppm by weight, and a content of iron is at most 1000 ppm by weight.