Synthesis and morphological aspects of AlN whiskers from Al powders obtained by spark discharged process

Yasunari Kaneko, Hiromichi Iwasaki, Yoshitaka Matsumoto, Minoru Nishida, Akihiro Mouri, Akira Chiba

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Synthesis of AlN whiskers from Al powders obtained by a spark discharged process and their morphology were studied. AlN whiskers were synthesized by nitridation of the compositions in the Al-C system in N2-gas flow at 1450°C for 24 hours. Morphological aspects of the whiskers were observed by a scanning and a transmission electron microscopes. Al powders obtained by the spark discharged process were covered with a thin layer of hydroxide and did not melt nor coalesce up to 1000°C in air. Morphologies of the synthesized whiskers were divided into three types; two single filament types and one bicrystal type. Both of the single filament whiskers had 〈0001〉 growth direction. The growth direction of the latter type deviated about 13 degrees from 〈0001〉 axis. All the whiskers were thin plate-like. The internal defect of whiskers was also described.

Original languageEnglish
Pages (from-to)1347-1352
Number of pages6
JournalJournal of the Society of Materials Science, Japan
Volume39
Issue number445
DOIs
Publication statusPublished - 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Synthesis and morphological aspects of AlN whiskers from Al powders obtained by spark discharged process'. Together they form a unique fingerprint.

Cite this