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Flash spark plasma sintering of 3YSZ |
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| Authors: | Mattia Biesuz Richard Sedlák Theo Saunders Alexandra Kovalčíková Ján Dusza Mike Reece Degui Zhu Chunfeng Hu Salvatore Grasso |
| Affiliation: | 1. Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China;2. University of Trento, Department of Industrial Engineering, Trento 38123, Italy;3. School of Engineering and Material Science, Queen Mary University of London, UK;4. Institute of Materials Research, Slovak Academy of Sciences, Division of Ceramic and Non-Metallic Systems, 040 01 Ko?ice, Slovak Republic |
| Abstract: | Flash SPS (FSPS) consolidation of 3YSZ cold pressed pellets was investigated. The results show that FSPS allows ultra-rapid consolidation of 3YSZ samples in 30–90 s under an applied electric field. The DC field induces electrochemical blackening. The partial reduction process starts from the cathode (-) and propagates toward the anode (+). This phenomenon, not previously discussed in FSPS literature, induces the development of internal temperature gradients resulting in a polarity dependent grain size/densification. |
| Keywords: | Corresponding authors. Flash sintering Flash-SPS 3YSZ Sintering Field-assisted sintering Electric current-assisted sintering |
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