| 마이크로파를 이용한 UO2+5wt% CeO2성형체의 소결특성 |
| 정창용, 이수철, 김시형, 김한수, 이영우 |
| 한국원자력연구소 미래형원자로연료개발부 |
| Sintering Properties of UO2+5wt% CeO2Compacts Using Microwave |
| Chang-Young Joung, Su-Cheol Lee, Si-Hyung Kim, Han-Soo Kim, Young-Woo Lee |
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| ABSTRACT |
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The heat generation tests of SiC and MO$_2$ samples by use of a microwave heating system were carried out and UO$_2$+5 wt% CeO$_2$ pellets were sintered in a microwave furnace in an oxidizing atmosphere, by taking into account the characteristics of the microwave heating obtained from the heat generation tests. The characteristics of pellets sintered in a microwave furnace were analysed and compared with those of the pellets sintered in a conventional electrical furnace. The temperature of MO$_2$ pellets with microwave heating increased quickly with input power and the variation of output power depended on the reaction characteristics of SiC and MO$_2$ with microwave. The sintered density of UO$_2$+5wt% CeO$_2$ pellets sintered in the microwave furnace was lower about 2% T.D. than that of the pellets sintered in an electrical furnace with sintering parameters. The microstructure of pellets sintered in microwave furnace has a broader pore distribution but has a larger grain size than that of the pellets sintered in the electrical furnace. |
| Key words:
Microwave sintering, UO$_2$+5 wt% $CeO_2$pellets, Oxidizing atmosphere |
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