Effect of composition on spark plasma sintering of ZrB2–SiC–ZrC nanocomposite synthesized by MASPSyn
| Autor: | Seyed Ali Tayebifard, Mohammad Zakeri, Esmail Salahi, S.M. Emami |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Nanocomposite Process Chemistry and Technology Spark plasma sintering Sintering 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Fracture toughness Flexural strength 0103 physical sciences Vickers hardness test Materials Chemistry Ceramics and Composites Relative density Crystallite Composite material 0210 nano-technology |
| Zdroj: | Ceramics International. 43:111-115 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2016.09.118 |
| Popis: | ZrB 2 –SiC–ZrC nanocomposites containing different contents of ZrC (6–20 wt%) were fabricated by spark plasma synthesizing and sintering method. Sintering mechanism was investigated by studying the displacement-temperature-time (DTT) diagrams which were obtained during spark plasma cycles. The flexural strength, hardness and fracture toughness were measured. The mean crystallite size of 77, 62 and 56 nm were calculated respectively for ZrB 2 , SiC and ZrC phases based on the Rietveld method. The maximum relative density (99.8±0.1%), flexural strength (620±24 MPa), Vickers hardness (19.3±0.4 GPa) and fracture toughness (5.7±0.2 MPa m 1/2 ) were measured for the composite containing 15 wt% ZrC. |
| Databáze: | OpenAIRE |
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