Coarse-grain CeO2 doped ZrO2 ceramic prepared by spark plasma sintering |
| |
| Affiliation: | 1. Institute of Materials Research, Slovak Academy of Sciences, 04001 Košice, Watsonova 47, Slovakia;2. Institute of Experimental Physics, Slovak Academy of Sciences, 04001 Košice, Watsonova 47, Slovakia;1. Laboratorio de Materiales Cerámicos, Instituto de Física de Rosario (CONICET-UNR), Avda. 27 de febrero 210 Bis, 2000 Rosario, Argentina;2. Departamento de Ingeniería Mecánica, Energética y de los Materiales, Universidad de Extremadura, Avda. de Elvas S/N, 06006 Badajoz, Spain;3. Departamento de Física Aplicada, Universidad de Extremadura, Avda. de Elvas S/N, 06006 Badajoz, Spain;3. Department of Materials Science and Engineering, Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, FL 32816, USA;1. Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04353, Košice, Slovak Republic;2. Department of Mathematics, Faculty of Chemical and Food Technology, Slovak Technical University, Radlinského 9, 812 37, Bratislava, Slovak Republic;3. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36, Bratislava, Slovak Republic;4. Centre of Excellence for Advanced Materials Application, Slovak Academy of Sciences, Dúbravská cesta 9, 845 11, Bratislava, Slovak Republic;5. Donát Bánki Faculty of Mechanical and Safety Engineering, Óbuda University, Népszínház utca 8, 1081, Budapest, Hungary;1. College of Chemistry and Resources Engineering, Hong He University, Mengzi, 661199, China;2. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China |
| |
| Abstract: | In the present work, coarse grain cerium stabilized zirconia bulk ceramic was prepared by spark plasma sintering technique. The relatively high temperature of 2000 °C used for sintering led to enormous grain growth up to approximately 100 μm. Sintering at high temperatures and in the vacuum caused oxygen depletion and thus transformation from tetragonal to cubic phase during the sintering process. The tetragonal phase was recovered by annealing at 1400 °C in air. This led to a change in fracture behavior. Mostly transgranular fracture of the cubic phase was changed to intergranular fracture after recovering the tetragonal phase. On the intergranular fracture surface, twinning-like structure and structures similar to antiphase domain were observed.Mechanical properties represented by indentation hardness of prepared samples were evaluated. |
| |
| Keywords: | Spark plasma sintering Coarse grain Fracture |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
