Alumina/zirconia composites toughened by the addition of graphene flakes
| Autor: | A. Piątkowska, K Krzyżak, P. Gołębiewski, Marek Boniecki, Paweł Ciepielewski, Władysław Wesołowski, Michał Woluntarski, M Romaniec |
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| Rok vydání: | 2017 |
| Předmět: |
Toughness
Materials science Composite number Oxide 02 engineering and technology 01 natural sciences law.invention chemistry.chemical_compound Fracture toughness Flexural strength law 0103 physical sciences Materials Chemistry Ceramic Composite material 010302 applied physics Graphene Process Chemistry and Technology 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry visual_art Vickers hardness test Ceramics and Composites visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Ceramics International. 43:10066-10070 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2017.05.025 |
| Popis: | The effect of added graphene flakes on the mechanical properties of a composite containing 20 wt% Al 2 O 3 and 80 wt% ZrO 2 (stab. 3 mol% Y 2 O 3 ) was studied. To obtain samples, a commercial ceramic powder produced by Tosoh (Japan), and graphene oxide (GO) made at the Institute of Electronic Materials Technology (Poland) were used. The obtained composites were based on aqueous mixtures of both components. After drying, they were sintered in an uniaxial pressure (HP) furnace. The composites contained from 0% to 3% of GO by weight. Results showed the influence of GO content i.e. fracture toughness has a maximum for 0.02% GO (increase by 42% in comparison to GO-free matrix) and afterwards decreased, strength decreased in the whole GO content range. Young's modulus and Vickers hardness remained constant up to 0.2% GO, and then decreased. |
| Databáze: | OpenAIRE |
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