A Controlled Carburization Process to Obtain Graphene–Fe3C–Fe Composites

Yi You; Masamichi Yoshimura; Sagar Cholake; Gwan Hyoung Lee; Veena Sahajwalla; Rakesh Joshi

doi:10.1002/admi.201800599

A Controlled Carburization Process to Obtain Graphene–Fe₃C–Fe Composites

Yi You, Masamichi Yoshimura, Sagar Cholake, Gwan Hyoung Lee, Veena Sahajwalla, Rakesh Joshi

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Significant progresses have been made toward the understanding of graphene growth on metal substrates via chemical vapor deposition method. Cu and Ni are the most studied catalysts for producing high-quality graphene. Among the transitional metal group, Fe also has the potential as a substrate for growth of graphene. However, the complexity of phase transformation in Fe and the thermodynamically preferable formation of iron carbide at the ambient temperature limit extensive use of Fe for graphene growth. Herein, the concurrent formation of graphene and Fe₃C by optimizing the growth time and cooling rate in graphene growth on Fe substrate is reported. Also, the influence of Fe phases (ferrite and austenite) on the graphene growth is studied. Graphene grain growth on Fe substrate is observed via ultrahigh temperature confocal microscope. The in situ observation confirms that graphene grains are grown around the Fe grain boundaries during the cooling process. The systematic study provides a profound insight into graphene growth on Fe substrate and thus paves a way toward development of graphene-based steel products for various applications.

Original language	English
Article number	1800599
Journal	Advanced Materials Interfaces
Volume	5
Issue number	16
DOIs	https://doi.org/10.1002/admi.201800599
Publication status	Published - 2018 Aug 23

Bibliographical note

Funding Information:
The authors would like to thank Dr. Seiya Suzuki for assisting in operating the CVD system. This research used the facilities supported by AMMRF at the Electron Microscope Unit at UNSW. Yi You acknowledges the PhD Scholarship from Tyre Stewardship Australia. Prof. Gwan-Hyoung Lee acknowledges a support by Business for Cooperative R&D between Industry, Academy, and Research Institute funded Korea Small and Medium Business Administration in 2017 (C0509984).

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering

Access to Document

10.1002/admi.201800599

Cite this

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title = "A Controlled Carburization Process to Obtain Graphene–Fe3C–Fe Composites",

abstract = "Significant progresses have been made toward the understanding of graphene growth on metal substrates via chemical vapor deposition method. Cu and Ni are the most studied catalysts for producing high-quality graphene. Among the transitional metal group, Fe also has the potential as a substrate for growth of graphene. However, the complexity of phase transformation in Fe and the thermodynamically preferable formation of iron carbide at the ambient temperature limit extensive use of Fe for graphene growth. Herein, the concurrent formation of graphene and Fe3C by optimizing the growth time and cooling rate in graphene growth on Fe substrate is reported. Also, the influence of Fe phases (ferrite and austenite) on the graphene growth is studied. Graphene grain growth on Fe substrate is observed via ultrahigh temperature confocal microscope. The in situ observation confirms that graphene grains are grown around the Fe grain boundaries during the cooling process. The systematic study provides a profound insight into graphene growth on Fe substrate and thus paves a way toward development of graphene-based steel products for various applications.",

author = "Yi You and Masamichi Yoshimura and Sagar Cholake and Lee, {Gwan Hyoung} and Veena Sahajwalla and Rakesh Joshi",

note = "Funding Information: The authors would like to thank Dr. Seiya Suzuki for assisting in operating the CVD system. This research used the facilities supported by AMMRF at the Electron Microscope Unit at UNSW. Yi You acknowledges the PhD Scholarship from Tyre Stewardship Australia. Prof. Gwan-Hyoung Lee acknowledges a support by Business for Cooperative R&D between Industry, Academy, and Research Institute funded Korea Small and Medium Business Administration in 2017 (C0509984). Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

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AU - Sahajwalla, Veena

AU - Joshi, Rakesh

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