Boron carbide nanoparticles for high-hardness ceramics: Crystal lattice defects after treatment in a planetary ball mill. Issue 4 (April 2017)

• Record Type: Journal Article
• Authors: Annenkov, Mikhail; Blank, Vladimir; Kulnitskiy, Boris; Larionov, Konstantin; Ovsyannikov, Danila; Perezhogin, Igor; Popov, Mikhail; Sorokin, Pavel
• Is Part Of: Journal of the European Ceramic Society. Volume 37:Issue 4(2017)
• Page Start: 1349
• Page End: 1353
• Publication Date: 2017-04
• Subjects: Boron carbide -- Planetary mill -- Transmission electron microscopy -- Crystal lattice defects -- Cracks; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2016.12.001
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: 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 B4 C grain size and cracking along the { 20 2 ¯ 1 } h planes, whereas the same treatment in the presence of silicon results in the appearance of twins along the { 10 1 ¯ 1 } h planes. Distorted stacking faults along ( 10 1 ¯ 4 ) h are observed. Ab initio simulations shown, that among low-index crystallographic planes { 20 2 ¯ 1 } h and { 10 1 ¯ 1 } h have the smallest values of specific surface energy which favors the formation of defects and cracks.