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DC Field | Value | Language |
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dc.contributor.author | Shajahan, I. | - |
dc.contributor.author | Dasari, Hari Prasad | - |
dc.contributor.author | Govardhan, P. | - |
dc.date.accessioned | 2020-03-31T08:22:48Z | - |
dc.date.available | 2020-03-31T08:22:48Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Materials Chemistry and Physics, 2020, Vol.240, , pp.- | en_US |
dc.identifier.uri | https://idr.nitk.ac.in/jspui/handle/123456789/10593 | - |
dc.description.abstract | Praseodymium-doped ceria (Ce0.9Pr0.1O2, PDC), as an electrolyte material for IT-SOFCs, is investigated with respect to the effect of synthesis method and a detailed analysis was carried out to understand the effect on crystallite size, morphology, specific surface area and sintering behaviour. The various synthesis routes such as microwave assisted co-precipitation method, room temperature co-precipitation method and EDTA-citrate complexing method was adopted for the synthesis of praseodymium doped ceria-based nano-materials. XRD pattern confirms the fluorite-type crystal structure of ceria and Raman spectroscopy analysis confirms the structure with the presence of oxygen vacancies. PDC synthesised by microwave assisted co-precipitation method using isopropyl alcohol as solvent exhibited better sintering activity, reduced the sintering temperature and promoted the densification rate when compared to other synthesis methods with uni-model shrinkage behaviour with shrinkage maxima at 765 C. Based on two sintering models (CHR/Dorn method), the initial stage sintering mechanism was investigated in the present study and confirmed that the grain boundary diffusion (m = 2) as the dominant mechanism and the activation energy was found to be 116 kJ/mol (CHR model) and 176 kJ/mol (Dorn Method) for initial stages of sintering for PDC material synthesised by microwave assisted co-precipitation method using isopropyl alcohol as solvent. 2019 Elsevier B.V. | en_US |
dc.title | Dilatometer studies of praseodymium doped ceria: Effect of synthesis methods on sintering behaviour | en_US |
dc.type | Article | en_US |
Appears in Collections: | 1. Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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15 Dilatometer studies of praseodymium.pdf | 2.16 MB | Adobe PDF | View/Open |
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