摘要
Abstract
The effect of nickel plated carbon nanotubes on the microstructure and mechanical properties of Ti (C,N)-Ni cermets has been investigated.Ti(C,N)-Ni cermet was prepared by vacuum sintering.The microstructure has two kinds of grain structure,one is black core/gray ring,the other is white core/gray ring.With the addition of nickel plated carbon nanotubes,the coarsening trend of microstructure is increased.The effect of nickel plated carbon nanotubes on the mechanical properties of cermets is remarkable.Found that the bending strength and hardness increase with the addition of carbon nanotubes increased first and then decreased,the flexural strength and the fracture toughness in addition to reach the maximum value of 1wt％ and 2.5wt％,and the fracture toughness of the addition amount of nickel carbon nanotubes increased in the range of 0～2.5wt％ with nickel carbon nanotubes added amount increases and the maximum value of 2.5wt％.关键词
镀镍碳纳米管/金属陶瓷/晶粒组织结构/抗弯强度/断裂韧性Key words
Nickel plated carbon nanotubes/Cermets/Grain structure/Bending strength/Fracture toughness分类
化学化工
