How the toughest inorganic fullerene cages absorb shockwave pressures in a protective nanocomposite: experimental evidence from two in situ investigations

Xu, Fang and Kobayashi, Takamichi and Yang, Zhuxian and Sekine, Toshimori and Chang, Hong and Wang, Nannan and Xia, Yongde and Zhu, Yanqiu (2017) How the toughest inorganic fullerene cages absorb shockwave pressures in a protective nanocomposite: experimental evidence from two in situ investigations. ACS Nano, 11 (8). pp. 8114-8121. ISSN 1936-086X

Full text not available from this repository.

Abstract

Nanocomposites fabricated using the toughest caged inorganic fullerene WS2 (IF-WS2) nanoparticles could offer ultimate protection via absorbing shockwaves; however, if the IF-WS2 nanomaterials really work, how they behave and what they experience within the nanocomposites at the right moment of impact have never been investigated effectively, due to the limitations of existing investigation techniques that are unable to elucidate the true characteristics of high-speed impacts in composites. We first fabricated Al matrix model nanocomposites and then unlocked the exact roles of IF-WS2 in it at the exact moment of impact, at a time resolution that has never been attempted before, using two in situ techniques. We find that the presence of IF-WS2 reduced the impact velocity by over 100 m/s and in pressure by at least 2 GPa against those Al and hexagonal WS2 platelet composites at an impact speed of 1000 m/s. The IF-WS2 composites achieved an intriguing inelastic impact and outperformed other reference composites, all originating from the “balloon effect” by absorbing the shockwave pressures. This study not only provides fundamental understanding for the dynamic performance of composites but also benefits the development of protective nanocomposite engineering.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/876402
Keywords: impact velocity; inorganic fullerene; nanocomposite; shock absorbing; shockwave
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: https://doi.org/10.1021/acsnano.7b02943
Depositing User: Eprints, Support
Date Deposited: 22 Jun 2018 13:09
Last Modified: 04 May 2020 18:59
URI: http://eprints.nottingham.ac.uk/id/eprint/52566

Actions (Archive Staff Only)

Edit View Edit View