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TiC-Ni-Mo复合材料的燃烧合成研究
Research on TiC-Ni-Mo Composites by Combustion Synthesis
【摘要】 通过自蔓延高温燃烧合成结合准热等静压(SHS/PHIP)方法得到TiC-Ni-Mo复合材料TH20和TH30.研究了工艺过程参数对材料致密性的影响.得到了最佳的工艺规范.SHS反应产物主要存在两相:TiC相和Ni的固溶体相,球形的TiC颗粒相被包围在近乎网状结构的Ni合金粘结相当中.TiC颗粒与粘结相界面结合良好,反应产物中有少量游离碳的存在,TH20和TH30的抗弯强度同传统方法生产的相近成分的材料相比比较接近.
【Abstract】 Dense TiC-Ni cermets TH20 and TH30 were produced by self-propagating high-temperature synthesis and pseudo heat isostatic pressing. The influence of process parameters on densities was investigated. Cermet mainly consisted of TiC particles and Ni-binder. TiC skeletal structure was enveloped by continuous Ni-binder phase. The interfacial bonding between TiC and Ni was found to be of a good quality. High dislocation existed near the interface and inside the Ni-binder phase,some residual carbon exists in reaction product. Meanwhile transverse rupture strengths of TH20 and TH30 were both close to those produced by conventional technology.
【Key words】 SHS; pseudo heat isostatic pressing; TiC-Ni cermets; processing parameters;
- 【文献出处】 无机材料学报 ,JOURNAL OF INORGANIC MATERIALS , 编辑部邮箱 ,1999年03期
- 【分类号】TB323
- 【被引频次】12
- 【下载频次】147