Preparation of Ce0.8Gd0.2O1.9 Powder Using CeO2 Powder and Gd Precipitation and Effect of CoO doping on Sintering
- Authors
- Sim, Soo-Man
- Issue Date
- 2015
- Publisher
- KOREAN CERAMIC SOC
- Keywords
- SOFC electrolyte; GDC; CeO2 powder; CoO doping; Sintering
- Citation
- JOURNAL OF THE KOREAN CERAMIC SOCIETY, v.52, no.6, pp.521 - 526
- Journal Title
- JOURNAL OF THE KOREAN CERAMIC SOCIETY
- Volume
- 52
- Number
- 6
- Start Page
- 521
- End Page
- 526
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/10947
- DOI
- 10.4191/kcers.2015.52.6.521
- ISSN
- 1229-7801
- Abstract
- Ce0.8Gd0.2O1.9 (GDC20) powder was prepared from a mixture of submicron-sized CeO2 powder and Gd precipitates using ammonium carbonate ((NH4)(2)CO3) as a precipitant. The mixture was calcined at 700 degrees C for 4 h followed by ball-milling that resulted in the GDC powder with an average particle size of 0.46 mu m. The powder had a very uniform particle size distribution with particle sizes ranging from 0.3 mu m to 1 mu m. Sintering of undoped GDC samples did not show a relative density of 99.2% until the temperature was increased to 1500 degrees C, whereas GDC samples doped with 5 mol% CoO exhibited a significant densification at lower temperature reaching a relative density of 97.6% at 1100 degrees C and of 98.8% at 1200 degrees C.
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Collections - Department of General Studies > Department of General Studies > 1. Journal Articles
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