Sintering behavior of U-80 at.%Zr powder compacts in a vacuum environment
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- Sintering behavior of U-80 at.%Zr powder compacts in a vacuum environment
- Kim, Tae-Kyu; Lee, Chong-Tak; Sohn, Dong-Seong
- Issue Date
- ELSEVIER SCIENCE BV
- JOURNAL OF NUCLEAR MATERIALS, v.372, no.2-3, pp.394 - 399
- Sintering behavior of U-80 at.%Zr powder compacts in a temperature range from 1100 to 1500 °C in a vacuum of 1 × 10-4 Pa was evaluated. The sintered density depended more on the sintering temperature than on the sintering time. The sintered specimens consisted of the δ-UZr2 matrix with acicular α-Zr precipitates, but it still had un-reacted zirconium when the sintering temperature was 1100 °C. The uranium depletion near the surface of the specimens sintered at temperatures above 1300 °C was detected. Massive Zr(O) grains in the sintered specimen were found, and their formation was restrained when the cooling rate from the sintering temperature was increased.
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