Preparation and characterization of lanthanum carbide encapsulated carbon nanocapsule/lanthanum hexaboride nanocomposites

Masaru Namura, Ippei Waki, Yoshinori Sato, Go Yamamoto, Akira Okubo, Hisamichi Kimura, Naohisa Osaka, Kenichi Motomiya, Toshiyuki Hashida, Balachandran Jeyadevan, Kazuyuki Tohji

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

LaC2@CNC/LaB6 nanocomposites were prepared using a spark plasma sintering system, and their mechanical properties and the intensity of characteristic La X-rays from the composites were characterized for application as X-ray target material. Using LaB6 as a binder, we succeeded in producing LaC2@CNC/LaB6 nanocomposites with a bulk density (2.91 g/cm3) and specific electric resistance (3.12 × 10- 4 Ω cm) through solidification at 2123 K. The fracture bending strength of LaC2@CNC/LaB6 nanocomposites (224 MPa) was 1.5 times larger than that observed for graphite/LaB6 composites. The most emitted characteristic La Lα X-ray from LaC2@CNC/LaB6 nanocomposites was 7743 counts/mm2/s in comparison with 6372 counts/mm2/s for graphite/LaB6 composites.

Original languageEnglish
Pages (from-to)1307-1310
Number of pages4
JournalMaterials Letters
Volume63
Issue number15
DOIs
Publication statusPublished - 2009 Jun 15

Keywords

  • Electronic property
  • Lanthanum hexaboride (LaB)
  • Mechanical property
  • Metal-encapsulating carbon nanocapsules (MECNCs)
  • Nanocomposites
  • Sintering

ASJC Scopus subject areas

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

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