TY - JOUR
T1 - Creation of individual few-layer graphene incorporated in an aluminum matrix
AU - Zhou, Weiwei
AU - Fan, Yuchi
AU - Feng, Xiaopeng
AU - Kikuchi, Keiko
AU - Nomura, Naoyuki
AU - Kawasaki, Akira
N1 - Funding Information:
This work was funded by the Fundamental Research Funds for the Central Universities ( 2232017A-07 ), the National Natural Science Foundation of China (No. 51702045 ), the Natural Science Foundation of Shanghai ( 17ZR1400900 ) and the Pujiang Talent Program ( 17PJ1400200 ). The authors would like to thank Dr. Takamichi Miyazaki for his sophisticated skill and beneficial discussion in TEM. We also appreciate the generous helps from Dr. Kosei Kobayashi, Pavlina Mikulova, Xiaohao Sun in Tohoku University.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/9
Y1 - 2018/9
N2 - 3D-networks of few-layer graphene (FLG) platelets at grain boundaries, sandwiched between thin amorphous Al2O3 layers, were fabricated by spark plasma sintering (SPS) of graphene oxide (GO)/Al mixed powders. The GO was prepared by a modified Hummers’ method, and was thermally reduced to FLG simultaneously during SPS densification. Subsequent plastic flow of the Al matrix during the hot extrusion process caused the destruction of this structure, rearranged the FLG platelets individually into the uniaxial direction, and made them incorporate in the Al matrix. Observations by high-resolution transmission electron microscopy proved the existence of a direct-contact interface between the FLG and the Al matrix without any interfacial compounds, and revealed that the Al matrix featured a fairly low dislocation density. Consequently, the mechanical strength of Al matrix was noticeably enhanced by FLG incorporation, agreeing with the potential strengthening effect predicted by the load transfer mechanism.
AB - 3D-networks of few-layer graphene (FLG) platelets at grain boundaries, sandwiched between thin amorphous Al2O3 layers, were fabricated by spark plasma sintering (SPS) of graphene oxide (GO)/Al mixed powders. The GO was prepared by a modified Hummers’ method, and was thermally reduced to FLG simultaneously during SPS densification. Subsequent plastic flow of the Al matrix during the hot extrusion process caused the destruction of this structure, rearranged the FLG platelets individually into the uniaxial direction, and made them incorporate in the Al matrix. Observations by high-resolution transmission electron microscopy proved the existence of a direct-contact interface between the FLG and the Al matrix without any interfacial compounds, and revealed that the Al matrix featured a fairly low dislocation density. Consequently, the mechanical strength of Al matrix was noticeably enhanced by FLG incorporation, agreeing with the potential strengthening effect predicted by the load transfer mechanism.
KW - A. Metal matrix composites (MMCs)
KW - B. Graphene
KW - C. Aluminum
KW - D. Interfaces
UR - http://www.scopus.com/inward/record.url?scp=85048263797&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048263797&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2018.06.008
DO - 10.1016/j.compositesa.2018.06.008
M3 - Article
AN - SCOPUS:85048263797
SN - 1359-835X
VL - 112
SP - 168
EP - 177
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
ER -