| 학회 |
한국재료학회 |
| 학술대회 |
2007년 가을 (11/02 ~ 11/02, 성균관대학교) |
| 권호 |
13권 2호 |
| 발표분야 |
구조재료 |
| 제목 |
Dynamic compaction of ceramic powder using shock loading |
| 초록 |
Shock-loading and recovery of the compacted specimen is known as shock recovery experiment and it is considered as a novel technique for consolidation of nanocrystalline ceramics without grain growth. Gd-doped Ceria (CGO) electrolyte is one of the promising alternative electrolyte for intermediate-temperature solid-oxide fuel cell (IT-SOFC) due to their high ionic conductivity. Gd-doped ceria nano powder(~5 nm) was shock-loaded by a plate impact experiment using a single stage light gas gun. A computational model was used to simulate the shock state(pressure and density changes along time) of the sample in two dimensional Eulerian code. The predicted density of compacted sample from the simulation was about 90%. To reveal the effect of shock compaction on sintering behavior, the recovered sample was heat-treated and the microstructure was compared with that of a conventionally compacted and heat-treated sample. |
| 저자 |
김하늘, 김도경
|
| 소속 |
한국과학기술원 |
| 키워드 |
dynamic compaction; shock wave; ceria
|
| E-Mail |
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