Fabrication of ZrO2/rGO nanocomposites by flash sintering under AC electric fields |
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| Authors: | Xinghua Su Mengying Fu Gai An Zhihua Jiao Qiang Tian Jumeng Wei |
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| Affiliation: | 1. School of Materials Science and Engineering, Chang’an University, Xi’an, China;2. State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang, China;3. College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu, China |
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| Abstract: | Ceramic matrix nanocomposites containing graphene possess superior mechanical properties. However, these nanocomposites are very difficult to be prepared using the conventional methods due to severe grain growth and simultaneous degradation of the graphene at high sintering temperatures and long dwell time. Herein, the dense ZrO2/rGO (reduced graphene oxide) nanocomposites are successfully fabricated by flash sintering of the green compacts consisting of ZrO2 nanoparticles and graphene oxide (GO) at 893–951℃ in merely 5 seconds under the alternating current (AC) electric fields of 130–150 V cm?1. The GO can be in situ thermal reduced during the flash sintering. The as-prepared ZrO2/rGO nanocomposites exhibit excellent mechanical properties. This study presents a green and simple approach to fabricate the dense ceramic matrix nanocomposites reinforced with graphene at low temperatures in a short time. |
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| Keywords: | densification Field-Assisted Sintering Technology (FAST) grain size nanocomposites zirconia |
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