대형 유리-세라믹 복합 매질 소결체 제조 시 비등방성 변형 특성 평가

• 영문명: Evaluation of Characteristics of Anisotropic Deformation in Manufacturing of Large-scale Glass-ceramic Composite Sintered Body
• 발행기관: 한국방사성폐기물학회
• 저자명: 김광욱 손성준 김지민 포스터 리차드 이근영
• 간행물 정보: 『Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)』Vol.18 No.1, 31~41쪽, 전체 11쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2020.03.30

국문 초록

We studied the anisotropic shrinkage and deformation characteristics of large size sintered bodies in the manufacturing of glass-ceramic composite wasteform. We used uranium-bearing waste, generated from the treatment of spent uranium catalyst. Sintered specimens were prepared in several forms, comprising a circular disk, and a quarter disk in several diameters of up to 40 cm. Regardless of form or size, the sintered bodies had high isotropic shrinkage when they were fabricated using green bodies prepared at 60 MPa. The average anisotropy rate and average shrinkage rate were 1.6%, and 37.4%, respectively. We confirmed that the glass-ceramic composite wasteform in a large scale disk-type for packing in a 200 L drum could be fabricated with a tolerable anisotropy shrinkage. This has resulted in a significant reduction in the volume of radioactive waste to be disposed of with highly stable wasteform.

키워드

Radioactive wasteform Isotropy shrinkage Immobilization Glass-ceramic composite Volume reduction Uranium catalyst