Asset Details
Do you wish to reserve the book?
Electrical and mechanical properties of poly(dopamine)-modified copper/reduced graphene oxide composites
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Electrical and mechanical properties of poly(dopamine)-modified copper/reduced graphene oxide composites
Do you wish to request the book?
Electrical and mechanical properties of poly(dopamine)-modified copper/reduced graphene oxide composites
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Electrical and mechanical properties of poly(dopamine)-modified copper/reduced graphene oxide composites
2017
Overview
Surface oxidation is frequently encountered in powder metallurgy of metals and alloys, and it leads to a reduction in their electrical conductivities. Therefore, it is highly desired to remove the naturally occurring oxide layer from the particles surface and to prevent its subsequent formation. A new approach was proposed in this study, where copper particles were mixed with graphene oxide (GO) sheets in an aqueous solution containing dopamine (DA) molecules. It was expected that polymerization of the DA molecules on the surface of the copper particle could promote both a reduction of surface oxide layer and the adhesion of GO sheets to the particles surface. The powder system was then washed, heat-treated in inert atmosphere and compressed at room temperature to form compacts. Electron microscopy revealed nearly ideal dispersion of GO sheets within the copper matrix. X-ray photoelectron spectroscopy showed a shift from Cu
2+
to Cu
+
and metallic copper in the coated and heat-treated samples, and Raman spectroscopy pointed to the increased amount of
sp
2
carbon as a result of the heat treatment. All DA/GO-coated and heat-treated compacts exhibited significantly higher electrical conductivity than those that have been made from pure copper powder or were not been heat-treated. Also, indentation measurements showed an increase in microhardness in samples with the shortest, 10 min, coating time and heat-treated at the highest, 600 °C, temperature.
Publisher
Springer US,Springer,Springer Nature B.V
Subject
/ alloys
/ carbon
/ Characterization and Evaluation of Materials
/ Chemistry and Materials Science
/ coatings
/ Compacts
/ Copper
/ Crystallography and Scattering Methods
/ Dopamine
/ Graphene
/ Graphite
/ Heat
/ Phenols (Class of compounds)
/ Powders (Particulate matter)
/ Sheets
