Back to Search
Start Over
Electrostatic self-assembly preparation of reduced graphene oxide-encapsulated alumina nanoparticles with enhanced mechanical properties of alumina nanocomposites
- Source :
- Journal of the European Ceramic Society. 38:5122-5133
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- In this study, we employed facile self-assembly methods to synthesize reduced graphene oxide-encapsulated alumina (Al2O3/rGO) nanoparticles. The Al2O3/rGO nanoparticles were subsequently incorporated into an Al2O3 matrix as filler to prepare nanocomposites. The microstructural analysis showed that relatively thin rGO sheets were homogeneously dispersed in the matrix and bonded with the Al2O3 grains forming a three-dimensional rGO network structure. The specific structure caused the rGO sheets to be anchored and bound to the matrix grains, resulting in a high contact area between the rGO sheets and the matrix, whilst the fracture mode alteration, grain refinement and improved interfacial strength of the nanocomposites were related to the unique structure. The results indicated that the nanocomposites with 2.5 vol.% rGO exhibited outstanding mechanical properties, increasing both the flexural strength by 105%, with a maximum value of 636 MPa, and the fracture toughness by 90% (5.9 MPa m1/2) when compared with monolithic Al2O3.
- Subjects :
- Materials science
Nanocomposite
Graphene
Oxide
Nanoparticle
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
law.invention
chemistry.chemical_compound
Fracture toughness
chemistry
Chemical engineering
Flexural strength
law
Materials Chemistry
Ceramics and Composites
Self-assembly
0210 nano-technology
Contact area
Subjects
Details
- ISSN :
- 09552219
- Volume :
- 38
- Database :
- OpenAIRE
- Journal :
- Journal of the European Ceramic Society
- Accession number :
- edsair.doi...........e6e2b05ac73fd42254cbc4abdffbdcbf