中文摘要：

采用泥浆法和干压法成型多孔氧化锆陶瓷坯体，经玻璃渗透制备了玻璃氧化锆复合材料，研究了陶瓷坯体的成型和渗透，并对渗透复合材料的性能进行了表征．结果表明，使用泥浆法成型，氧化锆浆料的固相含量可以达到75％（四，预烧结温度降低至1200℃，坯体预烧结过程中坯体的线收缩率小于0．5％，达到“净成型”要求，3mm的渗透距离可以在15min内完成，材料弯曲强度为285MPa．使用干压法成型，预烧温度1450℃，收缩率较大，2mm渗透距离需2h以上，材料弯曲强度达到400MPa．两种方法分别适用于泥浆直接成型工艺和CAD／CAM切削加工，所制复合材料可用于牙冠的核心瓷．

英文摘要：

Zirconia-glass dental composites were fabricated by the melting infiltration process. The preforms were fabricated by both the slip casting and uniaxially pressing methods, and the perform pre-sintering and infiltration were consequently investigated. It shows that through optimizing the slip casting process, the solid content of the slurry can reach about 75%（ω） and the slip-cast green body exhibits nearly no shrinkage after pre-sintering at 1200 ℃ .The infiltration speed has also been much improved, where an infiltration distance of 3 mm can be reached whthin 15 min. The bending strength of the infiltrated composite was 285 MPa. On the other hand, with the dry pressing method, a pre-sintering temperature of -1450 ℃ would be essential to get suitable green density and the infiltration speed is much slower （e.g. 2 h for 2 mm infiltration distance）, as compared with the slip-cast performs. The fracture strength of the composite from the dry pressing was measure to be 400 MPa. The two perform forming processes of the dry pressing and slip casting would be well adaptable to different demands of making all-ceramic dental restorations.