Abstract
Boron silicides, B₄Si and B₆Si, have been produced by calcining mixtures of finely-divided boron and silicon at different temperatures and information obtained regarding the process mechanism. There are optimum reaction times for the formation of B₄Si, before it disproportionates into B₆Si and Si. The atmospheric oxidation of boron silicides is retarded by the product layers of boric oxide, B₂O₃, and silica, SiO₂, and also by their mineralising action promoting sintering of the material. Boron silicides may be used only in an oxidising environment at lower temperatures (500 - 800°C) without severe degradation occurring if they have been first subjected to oxidation at higher temperatures (ca. 1000°C) in order to form a protective coating.
Awarding Institution(s)
University of Plymouth
Document Type
Thesis
Publication Date
1973
Deposit Date
June 2024
Additional Links
Recommended Citation
BROCKINGTON, B. (1973) THE FORMATION AND REACTIVITY OF SOME NONMETAL SILICIDES. Thesis. University of Plymouth. Available at: http://dx.doi.org/10.24382/4949
