Issue 46, 2019

Preparation of cobalt borides by solid–gas reactions


The reaction of Co with gaseous BBr3 in a temperature range of 700 to 1000 °C was studied using the hot-wire method with an experimental set-up reminiscent of the van Arkel–de Boer method. The borides Co2B und CoB form as layers on the surface of elemental cobalt. The influence of pressure, temperature and time on the reaction rate and on the composition of the borides was investigated. The reaction rate is significantly decreased by small amounts of an inert gas. The adjustment of reaction conditions allows to obtain single-phase and well-crystallized bulk materials of Co2B or CoB.

Graphical abstract: Preparation of cobalt borides by solid–gas reactions

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Article information

Article type
09 Aug 2019
18 Oct 2019
First published
19 Nov 2019
This article is Open Access
Creative Commons BY license

Dalton Trans., 2019,48, 17184-17191

Preparation of cobalt borides by solid–gas reactions

A. Henschel, M. Binnewies, M. Schmidt, U. Burkhardt, Y. Prots and Y. Grin, Dalton Trans., 2019, 48, 17184 DOI: 10.1039/C9DT03249E

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