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以微米TiC和TiN为主要原料,以微米Cr、Ni以及Co为添加剂,采用真空热压烧结工艺制备了TiC/TiN复合陶瓷刀具材料。测试和分析了烧结样品的相对密度、弯曲强度、断裂韧性以及硬度性能。结果表明,当微米TiC添加量(质量百分数)为48%,TiN为16%、Cr为7.2%、Ni为21.6%以及Co为7.2%时,所制备的复合陶瓷刀具材料性能最佳,相对密度值为95.2%,弯曲强度575 MPa,断裂韧性为9.32 MPa·m1/2,硬度值为1288 kgf/mm2。
TiC / TiN composite ceramic tool materials were prepared by vacuum hot-pressing sintering with micron TiC and TiN as the main raw materials and micron Cr, Ni and Co as additives. The relative density, flexural strength, fracture toughness and hardness of the sintered samples were tested and analyzed. The results show that the composite ceramic tool material has the best performance when relative density is 48%, TiN is 16%, Cr is 7.2%, Ni is 21.6% and Co is 7.2% A value of 95.2%, a bending strength of 575 MPa, a fracture toughness of 9.32 MPa · m1 / 2 and a hardness of 1288 kgf / mm2.