Densification and microstructure of spark plasma sintered 7YSZ–Gd2O3ceramic nano-composites
| Autor: | K.J. Martinez Gonzalez, F. Juárez López, E. Serrano Pérez, H. Martínez Gutiérrez, E. Marín Moares |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Spark plasma sintering Metallurgy Clay industries. Ceramics. Glass Sintering 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure Thermal diffusivity 01 natural sciences TP785-869 Thermal conductivity visual_art Rare earths 0103 physical sciences Ceramics and Composites visual_art.visual_art_medium Cubic zirconia Ceramic Yttria-stabilized zirconia Composite material 0210 nano-technology |
| Zdroj: | Journal of Asian Ceramic Societies, Vol 5, Iss 3, Pp 266-275 (2017) |
| ISSN: | 2187-0764 |
| DOI: | 10.1016/j.jascer.2017.05.004 |
| Popis: | Spark plasma sintering (SPS) technique was used to densify 7 mol% yttria-stabilized zirconia (7YSZ) powder with Gd 2 O 3 -particles, at temperatures ranging between 1000 and 1200 °C. Fine dispersion of Gd 2 O 3 -particles into a full-densified matrix was achieved. Shrinkage and microstructure, as well as porosity were investigated. The fine Gd 2 O 3 -particles distributed into 7YSZ matrix have influence over the sintering consolidation and final microstructure. An increment in the spark plasma sintering temperature around 70 °C is detected when Gd 2 O 3 particles are present. The thermal characterization was performed using the photothermal infrared radiometry technique. Both thermal diffusivity and thermal conductivity display a similar sigmoidal (Boltzmann type) behavior with the Gd 2 O 3 concentration in the samples. |
| Databáze: | OpenAIRE |
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