摘要
采用热压烧结法制备了不同VC含量的Ti(C0.7N0.3)-(Ni-Co)-Cr2C3-VC系Ti(C,N)基金属陶瓷,通过扫描电镜观察了组织结构与断口形貌,用三点弯曲法测试抗弯强度,用压痕法测得试样硬度和断裂韧度;分析了VC含量对材料力学性能和断口形貌的影响。结果表明:材料的断裂均以沿晶断裂为主,随着VC含量的增加,材料的抗弯强度呈下降趋势,而硬度和断裂韧性呈上升趋势;VC含量为16%时,试样的综合性能最好。
Ti(C0.7N0.3)-(Ni-Co)-Cr2C3-VC system cermets with different content of VC were fabricated by hot pressure technology.The microstructure and fracture morphology were investigated by scanning electron microscope,and the mechanical properties such as flexural strength,Vicker s hardness and fracture toughness were measured.The mechanical properties and SEM microphotography of fracture surface of the Ti(C,N) based cermet with different VC content were discussed.It is shown that the fracture modes of the four fab...
出处
《机械工程材料》
CAS
CSCD
北大核心
2007年第11期44-46,共3页
Materials For Mechanical Engineering
基金
烟台大学青年基金资助项目(WL06Z14)
