Synthesis of an AlN polycrystalline bulk layer and nanotubes by using NH3 and Bi

Haruhiko Morito, Tomoyuki Ide, Taiki Karahashi, Hironori Orikasa, Takahiro Yamada, Hisanori Yamane

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A bulk layer of aluminum nitride (AlN) polycrystals was synthesized on a boron nitride crucible surface by heating Al chunks with 5 mol% of bismuth at 1273 K for 3 h under NH3 gas flow. The fragments of the layer were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The platelet grains of AlN with a size of 0.1-1.0 μm and having preferred orientation of the c-axis perpendicular to the layer were formed at the crucible side. Nanotubes 6-15 μm long and about 20-100 nm thick grew on the gas phase side of the layer.

Original languageEnglish
Pages (from-to)2578-2582
Number of pages5
JournalJournal of the American Ceramic Society
Issue number11
Publication statusPublished - 2009 Nov 1

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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