Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 37, Issue 4, Pages 1349-1353Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2016.12.001
Keywords
Boron carbide; Planetary mill; Transmission electron microscopy; Crystal lattice defects; Cracks
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Funding
- Ministry of Education and Science of the Russian Federation [14.577.21.0090, RFMEFI57714X0090]
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Deformation features of the boron carbide lattice treated in a planetary ball mill are studied in our work. It is shown that such treatment causes a decrease in the B4C grain size and cracking along the {20 (1) over bar1}(h) planes, whereas the same treatment in the presence of silicon results in the appearance of twins along the {10 (1) over bar1}(h) planes. Distorted stacking faults along (10 (1) over bar4)(h) are observed. Ab initio simulations shown, that among low-index crystallographic planes {20 (2) over bar1}(h) and {10 (1) over bar1}(h) have the smallest values of specific surface energy which favors the formation of defects and cracks. (C) 2016 Elsevier Ltd. All rights reserved.
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