The dense TiC Fe cermets were produced by self propagating high temperature synthesis and pseudo hot isostatic pressing(SHS/PHIP). The influence of Fe content on the combustion temperature, combustion velocity, densit...The dense TiC Fe cermets were produced by self propagating high temperature synthesis and pseudo hot isostatic pressing(SHS/PHIP). The influence of Fe content on the combustion temperature, combustion velocity, density and microstructure of products was studied. The composition and microstructure of the product were analyzed. The results showed that the cermet consists of quasi spherical TiC particles and Fe binder phases. A thin diffusion layer was found between Fe binder phase and TiC particle. In the range of 10%~20% Fe content, the combustion temperature and velocity decrease more slowly than the other contributions.展开更多
采用自蔓延高温燃烧合成反应结合准热等静压技术 (SHS/PHIP)制备了组织连续分布的 Ti C- Ni系梯度功能材料 ,产物的成份分析显示 Ni元素沿厚度方向趋于连续过渡 ,改善了反应前的阶跃式分布。对 Ti C- Ni FGM在制备过程中的残余热应力进...采用自蔓延高温燃烧合成反应结合准热等静压技术 (SHS/PHIP)制备了组织连续分布的 Ti C- Ni系梯度功能材料 ,产物的成份分析显示 Ni元素沿厚度方向趋于连续过渡 ,改善了反应前的阶跃式分布。对 Ti C- Ni FGM在制备过程中的残余热应力进行了计算机有限元分析 ,并与 Ti C- Ni两层直接结合体进行了比较 ,发现 FGM具有明显的热应力缓和效果。展开更多
文摘The dense TiC Fe cermets were produced by self propagating high temperature synthesis and pseudo hot isostatic pressing(SHS/PHIP). The influence of Fe content on the combustion temperature, combustion velocity, density and microstructure of products was studied. The composition and microstructure of the product were analyzed. The results showed that the cermet consists of quasi spherical TiC particles and Fe binder phases. A thin diffusion layer was found between Fe binder phase and TiC particle. In the range of 10%~20% Fe content, the combustion temperature and velocity decrease more slowly than the other contributions.
文摘采用自蔓延高温燃烧合成反应结合准热等静压技术 (SHS/PHIP)制备了组织连续分布的 Ti C- Ni系梯度功能材料 ,产物的成份分析显示 Ni元素沿厚度方向趋于连续过渡 ,改善了反应前的阶跃式分布。对 Ti C- Ni FGM在制备过程中的残余热应力进行了计算机有限元分析 ,并与 Ti C- Ni两层直接结合体进行了比较 ,发现 FGM具有明显的热应力缓和效果。