The Effect of PVA-Al(III) Complex on Pore Formation and Grain Growth of <TEX>$UO_2$</TEX> Sintered Pellet (II)

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J. Korean Ceram. Soc. > Volume 36(8); 1999 > Article

Journal of the Korean Ceramic Society 1999;36(8): 783.

PVA-A(III) 착물이 $Uo_2$ 소결체의 기공형성과 결정립성장에 미치는 영향(II)

이신영, 김형수¹, 노재성²

한전원자력연료주식회사
¹한국원자력연구소
²충남대학교 정밀공업화학과

The Effect of PVA-Al(III) Complex on Pore Formation and Grain Growth of $UO_2$ Sintered Pellet (II)

ABSTRACT

The compressibility sinterability sintering behaviour and thermal stability of AlOOH added UO2 pellt and PVA-Al(III) complex added UO2 pellet were investigated respectively. Compared with characteristics of AlOOH added UO2 pellet the green density and the sintered density of PVA-Al(III) complex added UO2 pellet were lowered but the grain size and the pore size of that were more increased in accordance with higher compacting pressure. The AlOOH added UO2 pellet had the grain size of about 14${mu}{textrm}{m}$ with monomodal pore size distribution while the PVA-Al(III) complex added UO2 pellet had the grain size of about 42 ${mu}{textrm}{m}$ with bimodal pore size distribution. The PVA-A(III) complex added UO2 pellet had a similiar open porosity to the AlOOH added UO2 pellet and a lower resintered density change than the AlOOH added UO2 pellet.

Key words: $UP_2$ pellet, AllOOH, PVA-Al(III) complex, Pore formation, Grain growth