Comparative investigations of ternary thermite Al/Fe_(2)O_(3)/CuO and Al/Fe_(2)O_(3)/Bi_(2)O_(3) from pyrolytic,kinetics and combustion behaviors

作     者：Shi Li Jia-lin Chen Tao Guo Wen Ding Lin Jiang Miao Yao Jia-xing Song Li-feng Xie Yi-ming Mao Shi Li;Jia-lin Chen;Tao Guo;Wen Ding;Lin Jiang;Miao Yao;Jia-xing Song;Li-feng Xie;Yi-ming Mao

作者机构：College of Field EngineeringArmy Engineering University of PLANanjing210007China School of Mechanical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an Rare Metal Materials Research Institute Co.Ltd.Xi'an710016China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2023年第26卷第8期

页      面：180-190页

核心收录：

学科分类：082604[工学-军事化学与烟火技术] 08[工学] 0826[工学-兵器科学与技术] 

基　　金：supported by the National Natural Science Foundation of China, project number: 51704302 the Natural Science Foundation of Shaanxi Province, China, project number: Grant No.2020JC-50 

主　　题：Ternary thermite Thermal kinetics Reaction mechanism Combustion 

摘      要：To develop new energy enhancement energetic materials with great combustion performance and thermal stability,two kinds of ternary thermite,Al/Fe_(2)O_(3)/CuO and Al/Fe_(2)O_(3)/Bi_(2)O_(3),were prepared and analyzed via mechanical ball *** samples were characterized by SEM,XRD,TG-DSC,constant volume and constant pressure combustion *** first exothermic peaks of Al/Fe_(2)O_(3)/CuO and Al/Fe_(2)O_(3)/Bi_(2)O_(3) appear at 579°C and 564.5°C,*** corresponding activation energies are *** corresponding mechanism functions are set as G(a) = [-ln(1-a)]^(3/4) and G(a) =[-ln(1-a)]2/3,respectively,which belong to the Avrami-Erofeev ***/Fe_(2)O_(3)/CuO has better thermal *** small dose samples,its critical temperature of thermal explosion is 121.05°C higher than that of Al/Fe_(2)O_(3)/Bi_(2)O_(3).During combustion,the flame of Al/Fe_(2)O_(3)/CuO is spherical,and the main products are FeAl_(2)O_(4) and *** flame of Al/Fe_(2)O_(3)/Bi_(2)O_(3)is jet-like,and the main products are Al_(2)O_(3),Bi and ***/Fe_(2)O_(3)/Bi_(2)O_(3)has better ignition and gas production *** average ignition energy is 4.2 J lower than that of Al/Fe_(2)O_(3)/*** average step-up rate is 28.29 MPa/s,which is much higher than 6.84 MPa/s of Al/Fe_(2)O_(3)/*** paper provides a reference for studying the thermal safety and combustion performance of ternary thermite.