随着成型压力的逐渐增加,UN/U3Si2(30wt%)复合芯块生坯的相对密度逐渐增加。当成型压力小于200MPa时,采用球磨4h后的UN、U3Si2混合粉体成型的UN/U3Si2(30wt%)复合芯块生坯相对密度高于采用球磨1h后的UN、U3Si2混合粉体成型的UN/U3Si2(30wt%)复合芯块生坯相对密度,因此,UN、U3Si2混合粉体的球磨时间为4h。
With the increase of the pressure, the relative density of the green UN/U3Si2(30wt%) composite pellets gradually increased. When the pressure is less than 200 MPa, the relative density of the green UN/U3Si2(30wt%) composite pellets fabricated by the mixed UN and U3Si2 powder after ball milling for 4 h is higher than that of the green UN/U3Si2(30wt%) composite pellets fabricated by the mixed UN and U3Si2 powder after ball milling for 1 h. Thus, the ball milling time of the mixed UN and U3Si2 powder is 4 hours.