Effect of Ball-mill Treatment on Powder Characteristics, Compaction and Sintering Behaviors of ex-AUC and ex-ADU UO 2 Powder

摘要: The effects of ball-milling time(0 ~4 hrs) have been investigated on the change powder characteristics, compaction behavior (compaction pressure range : 200 ~400MPa) and sinterability (1700'c in Ha atmosphere) two different UO powders (ex-ADU ex-AUC) prepared by wet process. It is observed that, while ex-ADU was little affected, ex-AUC largely affected treatment. This may be attributed to characteristics particle size formed during preparation step, i.e.., former has a small average about 1.0, latter relatively large 301n. appeared that effective reduction treatment limited larger than l, extent maximum decrease 0.5tn. In case UO, it decreased with time green density sintered pellets from ball-milled increased compared those as-received under same conditions. mainly fine particles