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https://hdl.handle.net/10356/99269
Title: | Densification kinetics of nanocrystalline zirconia powder using microwave and spark plasma sintering—a comparative study | Authors: | Vasylkiv, Oleg Demirskyi, Dmytro Sakka, Yoshio Ragulya, Andrey Borodianska, Hanna |
Keywords: | DRNTU::Science::Chemistry | Issue Date: | 2012 | Source: | Vasylkiv, O., Demirskyi, D., Sakka, Y., Ragulya, A., & Borodianska, H. (2012). Densification kinetics of nanocrystalline zirconia powder using microwave and spark plasma sintering—a comparative study. Journal of nanoscience and nanotechnology, 12(6), 4577-4582. | Series/Report no.: | Journal of nanoscience and nanotechnology | Abstract: | Two-stage densification process of nanosized 3 mol% yttria-stabilized zirconia (3Y-SZ) polycrystalline compacts during consolidation via microwave and spark-plasma sintering have been observed. The values of activation energies obtained for microwave and spark-plasma sintering 260–275 kJ·mol−1 are quite similar to that of conventional sintering of zirconia, suggesting that densification during initial stage is controlled by the grain-boundary diffusion mechanism. The sintering behavior during microwave sintering was significantly affected by preliminary pressing conditions, as the surface diffusion mechanism (230 kJ·mol−1) is active in case of cold-isostatic pressing procedure was applied. | URI: | https://hdl.handle.net/10356/99269 http://hdl.handle.net/10220/13707 |
DOI: | 10.1166/jnn.2012.6177 | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | TL Journal Articles |
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