Flash spark plasma sintering of 3YSZ. Issue 5 (May 2019)

• Record Type: Journal Article
• Authors: Biesuz, Mattia; Sedlák, Richard; Saunders, Theo; Kovalčíková, Alexandra; Dusza, Ján; Reece, Mike; Zhu, Degui; Hu, Chunfeng; Grasso, Salvatore
• Is Part Of: Journal of the European Ceramic Society. Volume 39:Issue 5(2019)
• Page Start: 1932
• Page End: 1937
• Publication Date: 2019-05
• Subjects: Flash sintering -- Flash-SPS -- 3YSZ -- Sintering -- Field-assisted sintering -- Electric current-assisted sintering; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2019.01.017
• Languages: English
• ISSNs: 0955-2219

Abstract

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.