As a type of high-energy,insensitive and safe energetic material,the thermites have been applied in solid propellants,metal welding,new material manufacturing and other fields.In recent years,a type of metal carbodiimide Mx(NCN)y(where M is an alkali metal,alkali earth metal,transition metal or non-metallic element)has gradually become a research hotspot due to its unique electronic structure and novel physicochemical properties.This study utilizes the high nitrogen content and metastable properties of metal carbodiimides,represented by Fe(NCN),to assemble a new type of thermite system with nano Ti-Ti/Fe(NCN).And the composition,structure,morphology,combustion characteristics and reaction process of Ti/Fe(NCN)are explorated.The results show that the combustion process of Ti/Fe(NCN)is outstanding with a heat release of 605 J/g and a pressure release of 319 kPa,and Fe,TiC0.2N0.8 and gas product N2 are detected in the reaction products when the mass ratio of Ti-Fe(NCN)is 5∶1.The study of new thermite Ti/Fe(NCN)would enrich the research system of energetic materials and provide new ideas for the development of new energetic devices.
关键词
铝热剂/Ti/Fe(NCN)含能材料/燃烧特性/放热性能/反应过程
Key words
thermite/Ti/Fe(NCN)energetic material/combustion characteristic/heat release/reaction process
维普
万方数据