Impact scenarios in boron carbide: A computational study

Abstract

The effect of radiative impacts on the structure of boron carbide has been studied by both classical and ab initio simulations. As a part of this study, a new forcefield was developed for use in studying boron carbide materials. Impact scenarios in boron carbide were simulated in order to investigate the exceptional resistance of this material, and other icosahedral boron solids, to high-energy impact events.It was observed that interstitial defects created by radiative impacts are likely to be quenched locally, utilising the high substitutional disorder of chains and cages in the boron carbide structure, rather than via impacted atoms recombining with their vacated lattice site.

Functionalized boron carbide for enhancement of anticorrosion performance of epoxy resin

“…For B 4 C, 840, 1086, 1420, and 1552 cm −1 are the dominant peaks present in the FT‐IR spectra. The peak at 840 cm −1 is attributed to intraicosahedral B─B vibrations, 1086 cm −1 is ascribed to the inter‐icosahedral B─B vibrations, 1420 cm −1 correspond to the B─O stretching vibration, and the absorption band at approximately 1552 cm −1 is considerably impacted by both carbon and boron isotopes . As seen in Figure B, apart from the characteristic absorption peaks of B 4 C, peaks appear at approximately 2952 and 2880 cm −1 , corresponding to the methylene stretching vibration, and the methylene twisted vibration absorption peaks correspond to the peak at approximately 1458 cm −1 .…”

A novel waterborne polyurethane coating modified by highly dispersed nano‐boron carbide particles

“…The peak at 607 and 1401 cm −1 were attributed to the vibration absorption of the BO bond, 1103 cm −1 was attributed to the B‐B bond vibration which was the characteristic boron carbide vibration, 17 and the strong peak at 1633 cm −1 was the stretching vibration of BC in the triatomic chain in B 4 C. The absorption band at 1100–500 cm −1 was considerably impacted by the absorption of nitrogen impurities 30–32 . The relatively wide absorption peak at 3438 cm −1 corresponds to the OH absorption band, which was usually caused by the stretching vibration of adsorbed water molecules on the surface of B 4 C 33 …”