【摘 要】
：
Based on the experimental analysis and theoretical calculation,the self-propagating high temperature synthesis of TiB2/Fe composite was studied.The experimental results show that the interfacial between TiB2 and Fe was smooth and clear,and the composite b
【机 构】
：
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049,
【出 处】
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武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Based on the experimental analysis and theoretical calculation,the self-propagating high temperature synthesis of TiB2/Fe composite was studied.The experimental results show that the interfacial between TiB2 and Fe was smooth and clear,and the composite bending strength increased with the addition of Fe,however,the hardness decreased accordingly.The thermodynamics of the composites preparation process was calculated.The calculation results show that the primary chemical reaction was the reaction between Ti and B.The extra B can react with Fe,producing the brittle phase Fe2B.By increasing Ti,the production of Fe2B will decrease and a few of Ti-Fe intermetallic compound will be produced by the reaction between Ti and Fe in the composites.Finally,according to the Merzhanov condition of the adiabatic system,it is concluded that the Fe content must be selected between 16.3％ and 54.3％ by the thermodynamics temperature of reaction calculation.
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