中文摘要：

本文针对模具对陶瓷材料的要求，从提高陶瓷模具材料的综合力学性能出发，采用纳米复合方法制备出具有较高综合力学性能的纳米陶瓷模具材料。研究了纳米Ti（C7N3）和Y2Ｏ3 的组分含量对纳米陶瓷模具材料微观结构和力学性能的影响，结果表明添加纳米Ti（C7N3）和Y2O3的氧化锆纳米陶瓷模具材料的力学性能优于纯氧化锫陶瓷材料，纳米颗粒的添加改善了材料的微观结构和力学性能。当纳米Ti（C7N3）和Y2O3的添加量分别为17．15vol％和5mol％时，材料的综合性能最好，其抗弯强度为814MPa、断裂韧性6．35MPa·m^1/2、维氏硬度11．87GPa。

英文摘要：

From the requirement for ceramic materials of the dies, ZrO2 nano-ceramic die materials with high mechanical properties were hot pressed with nanometer composite method. The effects of nanometer Ti （C7 N3 ） and Y2 O3 content on the mechanical properties of nano-ceramic die material were discussed. The results indicated that the mechanical properties of ZrO2 nano-ceramic die material with the additions of Ti（ C7N3 ） and Y2O3 are higher than that of the pure ZrO2 ceramic material. The nanometer particles could improve the microstructure and mechanical properties of ZrO2 nano-ceramic die material. The flexural strength, fracture toughness and hardness with 17.15 vol% Ti （CTN3 ） and 5 mol% Y2O3 can reach 814 MPa, 6.35 MPa . m^1/2 and 11.87 GPa, respectively.