摘要
利用自蔓延高温燃烧合成反应结合准热等静压技术（SHS／PHIP）制备了致密性良好的TiC－Ni系梯度功能材料，产物的成份分析显示Ni元素沿厚度方向相对连续而平滑地过渡，明显不同于反应前的阶跃式分布．随着Ni含量的增加，燃烧温度的降低，梯度层中TiC颗粒尺寸逐渐减少，各梯度层的硬度，相对密度也随Ni含量的添加而变化．
Densified TiC-Ni functionally gradient material was produced by hot pseudo isostatic pressing just after self-propagating high-temperature synthesis.Ni composition varies continuosly and gradiently along the thickness of the reacted sample, remarkbly different from stepwise type before SHS.TiC particle sizes get smaller with Ni content increasing.Hardness values(HRA)and relative density of the gradient material also change with Ni contents.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第2期228-232,共5页
Journal of Inorganic Materials
关键词
梯度功能材料
碳化钛
镍
SHS
电工陶瓷
self-propagating high-temperature synthesis,functionally gradient materials,TiC,Ni
