具有异常放热现象的Fe-Nb-B-Y非晶合金燃烧机理

胡祥, 葛嘉城, 刘思楠, 伏澍, 吴桢舵, 冯涛, 刘冬, 王循理, 兰司

Combustion Mechanism of Fe-Nb-B-Y Amorphous Alloys with an Anomalous Exothermic Phenomenon

HU Xiang, GE Jiacheng, LIU Sinan, FU Shu, WU Zhenduo, FENG Tao, LIU Dong, WANG Xunli, LAN Si

图2 Fe-Nb-B-Y非晶合金的热分析结果 (a) DSC curves of Fe-Nb-B-Y MGs showing Y4.5 MGs have an anomalous exothermic phenomenon (AEP) in the supercooled liquid region, while Y0, Y3, and Y7 MGs do not have (Inset shows the enlarged region of AEP for Y4.5. T—absolute temperature, Tg—glass transition temperature, TC—valley temperature of the AEP, TX—crystallization temperature, Tm—melting temperature, Tl—liquidus temperature) (b) ignition temperature (Ti) of Y0, Y3, and Y4.5 MGs calculated by the TG-DTG tangent method (c) DTG curves of Fe-Nb-B-Y MGs (d) calculation of the activation energy of Fe-Nb-B-Y MGs during oxidation (Ea—activation energy, R—gas constant, dW /dt—mass change rate, w—residule mass during oxidation)

Fig.2 Thermal analysis results of Fe-Nb-B-Y MGs