Boron nitride with packets of nanotubes for microcomposite ceramics

V. I. Vereshchagin, M. A. Sergeev, B. S. Semukhin, Y. V. Borodin

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The possibility of creating microcomposite technical ceramics based on boron pyronitride (BPN) with nanotubes and packets of nanotubes providing a high microplasticity is considered. It is shown that the irradiation by nanosecond proton-ion beams with a high powder density promotes the growth of wurtzite-like BPN based on self-organizing mesoscopic (SOM) particles. SOM-blocks, and nanocrystalline particles. The sizes of SOM-particles and SOM-blocks of the initial and irradiated BPN are determined. The self-organization of nanotubes outside the zone of irradiation has a spiral cyclic nature and is caused by shear deformations of the layers composed of SOM-blocks. Tubes inclined to the surface with symmetry axes of the fifth order and packets of nanotubes of a disk shape are observed. The obtained micrographs are compared with model forms of manifestation of spiral cyclic structures.

Original languageEnglish
Pages (from-to)440-443
Number of pages4
JournalRefractories and Industrial Ceramics
Volume41
Issue number11-12
DOIs
Publication statusPublished - 1 Jan 2000

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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