Solid-state reaction induced by milling of a mixture of cobalt and boron powders

Corrias, A. and Ennas, G. and Marongiu, G. and Paschina, G. (1991) Solid-state reaction induced by milling of a mixture of cobalt and boron powders. Journal of Materials Science, 26 (18). pp. 5081-5084. ISSN 0022-2461. (doi:https://doi.org/10.1007/BF00549895) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1007/BF00549895

Abstract

A mixture of polycrystalline elemental cobalt and boron powders in the atomic ratio Co67B33 was mechanically milled for 150 h. The milled powders were examined by X-ray diffraction, extended X-ray absorption fine structure spectroscopy and differential scanning calorimetry. Two steps where energy was regulated by different full/void volume ratio in the vials were carried out. In the first milling step (f/v=1/1) amorphization involves only a portion of the starting powder and reaches a steady state after 25 h. More energetic conditions (f/v=1/5) lead to almost complete amorphization of the sample after 70 h, and in the final stages the formation of crystalline t-Co2B is observed. Then a steady state, in which both amorphous and crystalline phases coexist, is reached.

Item Type: Article
Subjects: Q Science > QC Physics > QC176.8.N35 Nanoscience, nanotechnology
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Anna Corrias
Date Deposited: 17 Dec 2014 12:06 UTC
Last Modified: 04 Dec 2017 12:54 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46249 (The current URI for this page, for reference purposes)
  • Depositors only (login required):