本发明公开了属于金属陶瓷技术领域的一种用于固态氧控的聚乙烯醇缩丁醛溶液粘结氧化铅陶瓷及其制备方法,包括PbO和聚乙烯醇缩丁醛溶液;以PbO计,添加大于0且小于等于6wt%的聚乙烯醇缩丁醛溶液;其制备方法为:聚乙烯醇缩丁醛溶液和PbO充分混合、研磨均匀,得到混合物;所得混合物经预压制得到坯体后,重新粉碎,研磨均匀后过筛,得到混合粉末后置于金属模具中加压、保压与泄压后得到陶瓷压坯;将陶瓷压坯进行排胶;最后进行烧结,冷却后得氧化铅陶瓷。所述氧化铅陶瓷具备高硬度、三点弯曲强度和致密度,微观形态良好,在第四代铅基快中子反应堆高温流动冲刷工况下能保持形状的完整性,满足固态氧控的需求。
The invention discloses a polyvinyl butyral solution bonded lead oxide ceramic for solid oxygen control, which belongs to the technical field of cermets, and a preparation method thereof, including PbO and polyvinyl butyral solution; Add more than 0 and less than or equal to 6wt% polyvinyl butyral solution based on PbO; The preparation method is as follows: polyvinyl butyral solution and PbO are fully mixed and evenly ground to obtain a mixture; After the mixture is pre-pressed to obtain the green body, it is crushed again, grinded evenly, screened, and mixed powder is obtained, and then placed in a metal mold to pressurize, maintain and relieve pressure to obtain the ceramic compacts; Discharging glue from ceramic compacts; Finally, lead oxide ceramics are obtained after sintering and cooling. The lead oxide ceramic has high hardness, three-point bending strength and density, and good micro-morphology. It can maintain the integrity of shape under the high temperature flow scouring condition of the fourth generation lead-based fast neutron reactor and meet the requirements of solid oxygen control.