The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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Microstructural Changes of AlOOH Doped $UO_2$ Pellet during the Annealing Process

  • Published : 2000.09.01
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Abstract

Microstructural changes of AlOOH doped UO$_2$pellet after annealing up to 216h have been observed and they were compared with those of the standard pellet. Grain and pore size of UO$_2$pellet increased with the addition of AlOOH and its effect was still validated during annealing. Densification rate was reduced by the addition of AlOOH and it was attributed to coarsened pores with spherical shape. Grain and pore growth was stopped and density increase was the least after 144h of annealing. The variation of pore size resulting from annealing has a linear relationship with that of grain size.

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References

  1. Nucl.Technol v.26 The Influence of Fuel Microstructure on In-Pile Densification W.Chubb;A.C.Hott
  2. J.Nucl.Mater v.98 Doping UO2 with Niobia-bennficial of not H.Assmann,W.Doerr,G.Gradel;M.Peechs,
  3. J.Nucl.Mater v.95 The Irradiation Performance of Magnesia-doped UO2 Fuel P.T.Sawbridge,C.Baker;R.M.Cornell,
  4. J.Nucl.Mater v.52 The Effect of Titania on Grain Growth and Densification on Sintered Uo2 J.B.Ainscough,F.Rigby;S,C.Osborn
  5. J.Am.Ceram.Soc v.51 Grain growth in UO2 Al2O3 in the Presence of a Liquid Phase K.W.Lay,
  6. US Pat v.4869866 Nuclear Fuel K.W.Lay,H.S.Rosenbaum;J.H.Davis
  7. Addison-Wesley Publishing Co v.109 Quantitative Stereology E.Underwood