Preparation of Ti-based amorphous brazing alloy
(1.江苏省镇江市华东船舶工业学院焊接技术与工程系2.江苏省镇江市江苏科技大学先进焊接技术省级重点实验室3.Provincial Key Lab of Advanced Welding Technology,Jiangsu University of Science and Technology, Zhenjiang 212003, China4.江苏省南京市南京理工大学金属纳米材料与技术联合实验室)
Abstract: A new kind of amorphous active brazing alloy foil with the composition of Ti40Zr25Ni15Cu20 was successfully synthesized using melt spinning in roll forging machine in argon atmosphere. The amorphous structure and composition were examined by X-ray diffraction, differential thermal analysis and energy dispersive X-ray detector. The results show that the Ti40Zr25Ni15Cu20 amorphous alloy foil has excellent wettability on Si3N4 ceramic and demonstrate a strong glass forming ability. The reduced glass transition temperature (Trg) and the temperature interval of supercooled liquid region before crystallization are 0.76 and 78 K, respectively.
Key words: N4 ceramic; Ti based brazing alloy; glass forming ability; glass transition temperature