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|Title:||Densification kinetics of nanocrystalline zirconia powder using microwave and spark plasma sintering—a comparative study||Authors:||Vasylkiv, Oleg
|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
|DOI:||10.1166/jnn.2012.6177||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||TL Journal Articles|
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