无机材料学报

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TiC-Ni梯度功能材料的SHS研究

张幸红; 韩杰才; 赫晓东; 杜善义   

  1. 哈尔滨工业大学复合材料研究所; 哈尔滨 150001
  • 收稿日期:1998-05-08 修回日期:1998-06-09 出版日期:1999-04-20 网络出版日期:1999-04-20

TiC-Ni Functionally Gradient Material Produced by SHS

ZHANG Xing-Hong; HAN Jie-Cai; HE Xiao-Dong; DU Shan-Yi   

  1. Center for Composite Materials; Harbin Institute of Technology Harbin 150001 China
  • Received:1998-05-08 Revised:1998-06-09 Published:1999-04-20 Online:1999-04-20

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.

关键词: 自蔓延高温燃烧合成, 梯度功能材料, 碳化钛,

Abstract: 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.

Key words: self-propagating high-temperature synthesis, functionally gradient materials, TiC, Ni

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