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| 001 | 878011 | ||
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| 100 | 1 | _ | |a Mishra, Tarini Prasad |0 P:(DE-Juel1)166597 |b 0 |
| 245 | _ | _ | |a Field-Assisted Sintering/Spark Plasma Sintering of Gadolinium-Doped Ceria with Controlled Re-Oxidation for Crack Prevention |
| 260 | _ | _ | |a Basel |c 2020 |b MDPI |
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| 500 | _ | _ | |a Open Access Journal |
| 520 | _ | _ | |a Gadolinium-Doped Ceria (GDC) is a prospective material for application in electrochemical devices. Free sintering in air of GDC powder usually requires temperatures in the range of 1400 to 1600 °C and dwell time of several hours. Recently, it was demonstrated that sintering temperature can be significantly decreased, when sintering was performed in reducing atmosphere. Following re-oxidation at elevated temperatures was found to be a helpful measure to avoid sample failure. Sintering temperature and dwell time can be also decreased by use of Spark Plasma Sintering, also known as Field-Assisted Sintering Technique (FAST/SPS). In the present work, we combined for the first time the advantages of FAST/SPS technology and re-oxidation for sintering of GDC parts. However, GDC samples sintered by FAST/SPS were highly sensitive to fragmentation. Therefore, we investigated the factors responsible for this effect. Based on understanding of these factors, a special tool was designed enabling pressureless FAST/SPS sintering in controlled atmosphere. For proof of concept, a commercial GDC powder was sintered in this tool in reducing atmosphere (Ar-2.9%H2), followed by re-oxidation. The fragmentation of GDC samples was avoided and the number of micro-cracks was reduced to a minimum. Prospects of GDC sintering by FAST/SPS were discussed. |
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| 700 | 1 | _ | |a Laptev, Alexander |0 P:(DE-Juel1)164315 |b 1 |e Corresponding author |
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| 700 | 1 | _ | |a Bram, Martin |0 P:(DE-Juel1)129591 |b 7 |
| 773 | _ | _ | |a 10.3390/ma13143184 |g Vol. 13, no. 14, p. 3184 - |0 PERI:(DE-600)2487261-1 |n 14 |p 3184 - |t Materials |v 13 |y 2020 |x 1996-1944 |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/878011/files/Open%20Access%20published%20Manuscript.pdf |
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