Document Type

Article

Publication Date

8-27-2010

Publication Title

Colloid Journal

Abstract

The regularities of the mechanical activation of hexagonal boron nitride are analyzed using the X-ray diffraction, IR spectroscopy, transmission electron microscopy, dynamic light scattering, and adsorption methods. At the initial state of mechanical activation, the main process is material destruction. At this stage, the specific surface area increases to 400 m2/g and crystallographically oriented nanosized needles are formed. At the same time, boron nitride crystal structure is disordered with an increase in interplanar distance d(002). The disordering is assumed to be due to a shift along planes (001). At a specific dose of supplied mechanical energy above 6–8 kJ/g, the disordering processes dominate and the material is amorphized. At this stage, the specific surface area of samples decreases.

Comments

This work was supported by the Presidium of the Russian Academy of Sciences (program no. 18) and the Russian Foundation for Basic Research (project no.07-03-00610a).

DOI

10.1134/S1061933X10040162

Version

Postprint

Volume

72

Issue

4

Included in

Physics Commons

Share

COinS