Academic Journal
Electrochemically exfoliated graphene-like nanosheets for use in ceramic nanocomposites
| العنوان: | Electrochemically exfoliated graphene-like nanosheets for use in ceramic nanocomposites |
|---|---|
| المؤلفون: | Poyato Galán, Rosalía, Verdugo, Reyes, Muñoz Ferreiro, Carmen, Gallardo López, Ángela María |
| المساهمون: | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute (MDPI) |
| سنة النشر: | 2022 |
| المجموعة: | idUS - Deposito de Investigación Universidad de Sevilla |
| مصطلحات موضوعية: | 3YTZP, Ceramic nanocomposites, Electrochemical exfoliation method, Electron microscopy, Graphene, Planetary ball milling, Raman spectroscopy, SPS, Vickers indentations |
| الوصف: | In this work, the synthesis of graphene-like nanosheets (GNS) by an electrochemical exfoliation method, their microstructural characterization and their performance as fillers in a ceramic matrix composite have been assessed. To fabricate the composites, 3 mol % yttria tetragonal zirconia (3YTZP) powders with 1 vol % GNS were processed by planetary ball milling in tert-butanol to enhance the GNS distribution throughout the matrix, and densified by spark plasma sintering (SPS). According to a thorough Raman analysis and SEM observations, the electrochemically exfoliated GNS possessed less than 10 graphene layers and a lateral size lower than 1 μm. However, they contained amorphous carbon and vacancy-like defects. In contrast the GNS in the sintered composite exhibited enhanced quality with a lower number of defects, and they were wavy, semi-transparent and with very low thickness. The obtained nanocomposite was fully dense with a homogeneous distribution of GNS into the matrix. The Vickers hardness of the nanocomposite showed similar values to those of a monolithic 3YTZP ceramic sintered in the same conditions, and to the reported ones for a 3YTZP composite with the same content of commercial graphene nanosheets. ; Ministerio de Ciencia, Innovación y Universidades PGC 2018-101377-B-100 |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | Materials, 13 (11), 2656.; PGC 2018-101377-B-100; https://doi.org/10.3390/ma13112656; https://idus.us.es/handle//11441/128960 |
| الاتاحة: | https://idus.us.es/handle//11441/128960 |
| Rights: | Attribution-NonCommercial-NoDerivatives 4.0 Internacional ; http://creativecommons.org/licenses/by-nc-nd/4.0/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.5DBC02E8 |
| قاعدة البيانات: | BASE |
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