Changes in the mechanical, structural and electrical properties of glassy carbon due to strontium and silver co-implantation and annealing

Odutemowo OS, Malherbe JB, Limbach R, Wondraczek L, Wendler E, Undisz A, Njoroge EG, Idisi DO, Dhlamini MS (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Applied Surface Science Elsevier

Book Volume: 537

Article Number: 147929

DOI: 10.1016/j.apsusc.2020.147929

Abstract

The effect of Sr and Ag co-implantation and recovery annealing on the structural, mechanical and electrical properties of glassy carbon is reported. Glassy carbon was co-implanted with 200 keV Sr and Ag ions to a fluence of 1 × 1016 ions/cm2 at room temperature. Combination of Raman spectroscopy and high resolution transmission electron microscopy (HRTEM) showed that the co-implantation of Sr and Ag resulted in amorphisation of the glassy carbon substrate. Raman spectra and HRTEM micrographs obtained after annealing indicated recovery of the glassy carbon structure, however, the recovered structure appears to be graphite-like. Instrumented indentation experiments on the ion-irradiated glassy carbon substrates revealed the formation of a surface layer with considerably enhanced mechanical performance. When annealing the ion implanted samples, these effects were only partially reversible. The effect of the irradiation-induced amorphisation and graphitisation of glassy carbon on its conductivity was also studied. The sample became less conductive after Sr and Ag co-implantation, whereby annealing resulted in an increase in conductivity.

Authors with CRIS profile

Lothar Wondraczek

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) University of Pretoria ZA South Africa (ZA) University of South Africa (UNISA) ZA South Africa (ZA)

How to cite

APA:

Odutemowo, O.S., Malherbe, J.B., Limbach, R., Wondraczek, L., Wendler, E., Undisz, A.,... Dhlamini, M.S. (2021). Changes in the mechanical, structural and electrical properties of glassy carbon due to strontium and silver co-implantation and annealing. Applied Surface Science, 537. https://doi.org/10.1016/j.apsusc.2020.147929

MLA:

Odutemowo, O. S., et al. "Changes in the mechanical, structural and electrical properties of glassy carbon due to strontium and silver co-implantation and annealing." Applied Surface Science 537 (2021).

BibTeX: Download