| Dy2O3-TiO2 산화물의 소결성 및 소결체 특성에 관한 연구 |
| 김한수, 정창용, 김시형, 이병호, 이영우, 손동성, 이상현1 |
한국원자력연구소
1한국표준연구원 |
| Study on the Sinterability and Pellet Properties of Dy2O3-TiO2 Oxides |
| Han-Soo Kim, Chang-Yong Joung, Si-Hyung Kim, Byoung-Ho Lee, Young-Woo Lee, Dong-Seong Sohn, Sang-Hyun Lee1 |
Korea Atomic Energy Research Institute
1Korea Research Institute of Standards and Science |
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| ABSTRACT |
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pellets were fabricated as a reactor control material by the powder process. Sinterability of $Dy_2O_3+TiO_2$ mixtures and phases of solid solutions were analyzed by using TMA and XRD, respectively. The thermal conductivity of pellet was determined from the measurement data of the specific heat and the thermal diffusivity of the pellet. The sinterability and the sintered density varied as a function of Dy content in $Dy_xTi_yO_z$. The pellet of $3;g;Dy/cm^3;Dy_xTi_yO_z$ melted in the sintering temperature of $1580{circ}C$. There were two phases of $Dy_2TiO_5+Dy_2Ti_2O_7$ and a single phase of $Dy_2TiO_5$ for the pellet that has the Dy content of and , respectively. The thermal conductivity of $Dy_xTi_yO_z$ was nearly constant in the temperature range of $25~600{circ}$. It was 1.69~1.78 W/mK for the pellet sintered in and 1.49~1.55 W/mK for the pellet sintered in $1550{circ}$. |
| Key words:
Control rod material, Sintering, XRD, Thermal conductivity |
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