| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Sao Paulo, USP FZEA, Postgrad Programme Mat Sci & Engn, Av Duque Caxias Norte 225, BR-13635900 Pirassununga, SP - Brazil
[2] Univ Sao Paulo, Fac Anim Sci & Food Engn FZEA, Dept Biosyst Engn, BR-13635900 Pirassununga, SP - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | CERAMICS INTERNATIONAL; v. 47, n. 15, p. 21618-21624, AUG 1 2021. |
| Web of Science Citations: | 1 |
| Abstract | |
Flash Sintering (FS) is an energy-efficient sintering technique, which allows a considerable reduction in processing time and temperature. However, a recurring problem of flash sintered samples is the microstructural heterogeneity, which occurs mostly on samples with a high surface-to-volume ratio (e.g., cylindrical samples). Thus, aiming to obtain homogeneous microstructures and smaller grain sizes, this work evaluated the application of Two-Step Flash Sintering (TSFS) in 3YSZ and compared them with samples sintered by FS. The TSFS experiments consisted of applying a first step of current density with greater magnitude (100 mA mm-2 and 200 mA mm-2) followed by the second step with smaller magnitude (50 mA mm-2 and 75 mA mm-2). In the FS experiments, a single step of current density was used (100 mA mm-2 and 200 mA mm-2). The Results showed that TSFS significantly reduced the microstructural heterogeneity compared to FS, promoting smaller and more homogeneous grain sizes in different regions of the samples. (AU) | |
| FAPESP's process: | 18/04331-5 - Instrumentation and automation of a furnace adapted to flash sintering |
| Grantee: | João Vitor Campos |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 15/07319-8 - Study ultra rapid sintering and low energy consumption: flash Sintering |
| Grantee: | Eliria Maria de Jesus Agnolon Pallone |
| Support Opportunities: | Regular Research Grants |