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A simple method to examine room-temperature corrosion of graphene-coated copper foil after stored for 2.5 years
Fauzi F.a, Suhendar H.a, Kusumaatmaja A.a, Nugroho F.a, Triyana K.a, Nugroho A.A.b, Santoso I.a
a Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta, 55281, Indonesia
b Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Jawa Barat, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2018 IOP Publishing Ltd.We report the method for measuring the oxidation level of graphene-coated copper and uncoated copper upon exposure to an ambient condition (relative humidity, RH ∼ 80%) for 2.5 years using the combination of UV-vis reflectance spectroscopy and the optical simulation. In the simulation, we consider the oxide layer as an effective medium which contains a certain fraction of two stable oxide phases of copper, namely Cu2O and CuO (which is widely known as the indicator of the severe oxidation process). The results show that the graphene-coated copper and uncoated copper have been oxidized with the similar oxide thickness around 15 nm. However, the percentage of Cu2O and CuO in graphene-coated copper, which is 64% and 36%, respectively, differs from that of uncoated copper, which is 30% and 70%, respectively. The amount of CuO in the graphene-coated copper turns out smaller than that on uncoated copper, which means that graphene may slow down the oxidation process but not completely prevent the oxidation of the underlying copper. The energy dispersive x-ray spectroscopy (EDS) confirms that there is more oxygen on the uncoated copper. These findings could open new possibilities for nondestructive characterizations and studies of graphene-coated metals with potential corrosion.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Ambient conditions,Energy dispersive X ray spectroscopy,Fresnel equation,grapheme,Nondestructive characterization,Optical modeling,Temperature corrosion,Uv-vis reflectances[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]copper,Fresnel equation,grapheme,optical model,room temperature corrosion[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The authors would like to thank UGM and Kemenristekdikti for providing financial support through Hibah PTUPT (Grant no. 885/UN1/DITLIT/DIT-LIT/LT/2018) and Hibah PBK (Grant no. 1708/UN1/DITLIT/ DIT-LIT/LT/2018). We also acknowledge Pusat Sumber Daya Mineral Batubara dan Panas Bumi (PSDMBP) KemenESDM in Bandung for Raman spectroscopy measurement.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1088/2053-1591/aadb2b[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]