【摘 要】
：
The reaction energy,impact sensitivity and mechanical behavior of W-PTFE-Mg,W-PTFE-Ti and W-PTFE-Zr composites with the same W and PTFE mass ratio are compa
【机 构】
：
SchoolofMaterialScienceandEngineering,BeijingInstituteofTechnology,No.5yard,ZhongGuanCunSouthStreet,
【出 处】
：
第五届爆炸、冲击波和高应变率现象国际研讨会(International Workshop on Explosion, S
论文部分内容阅读
The reaction energy,impact sensitivity and mechanical behavior of W-PTFE-Mg,W-PTFE-Ti and W-PTFE-Zr composites with the same W and PTFE mass ratio are compared.The effect of active metal species on the reaction energy of W-PTFE-active metal mixtures at both oxygen and argon atmosphere are investigated.The role of W in the reaction of composites in oxygen is revealed.Besides,the effect of active metal species on the impact sensitivity is studied.The reaction time,reaction degree,completeness and absorbed critical energy before reaction of all the three kinds of W-PTFE-active metal composites are determined.Moreover,quasi-static compression behavior of W-PTFE-Mg,W-PTFE-Ti and W-PTFE-Zr composites is compared and the corresponding failure mechanism which is responsible for different mechanical behaviors is revealed.Furthermore,dynamic compression behaviors at a temperature range from 288 K to 573 K with 100K intervals are investigated.The effect of active metal species on the dynamic response of W-PTFE-active metal composites at elevated temperatures is compared and the corresponding failure mechanisms are revealed.
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