超声辅助SiO_(2)纳米颗粒强化铝/铜等离子弧熔钎焊工艺  

Ultrasonic assisted SiO_(2)nanoparticles strengthened Al/Cu plasma arc fusion brazing welding process

作　　者：樊丁[1,2] 张欢 黄健康[1,2] 李岩 谢宇航 FAN Ding;ZHANG Huan;HUANG Jiankang;LI Yan;XIE Yuhang(State Key Laboratory for Advanced Processing and Recycling of Non-Ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China;School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州730050 [2]兰州理工大学材料科学与工程学院,兰州730050

出　　处：《材料工程》2025年第2期133-141,共9页Journal of Materials Engineering

基　　金：国家自然科学基金项目(52165045);甘肃省科技重大专项(22ZD6GA008)。

摘　　要：利用超声波辅助纳米强化等离子弧熔钎焊工艺成功实现了铝/铜异种金属的连接,并获得了形态良好的铝/铜搭接接头。使用SEM、EDS、XRD、拉伸实验和导电性能测试等方法,分析研究了超声波和SiO_(2)纳米颗粒对搭接接头的宏观和微观形貌、组织结构、力学性能以及导电性能的影响。结果表明:在超声波和SiO_(2)纳米颗粒耦合作用下得到的搭接接头,液态铝在铜表面的铺展和润湿效果更好,焊缝正面成形良好,接头主要由金属间化合物层区和Al-Cu共晶区组成,金属间化合物层的厚度明显减小,接头力学性能显著提高,采用了SiO_(2)纳米颗粒和超声波的铝/铜接头的相对电导率为153.527%IACS,导电性能有所改善。The joining of aluminum/copper dissimilar metals is successfully achieved by ultrasonic-assisted nano-enhanced plasma arc fusion brazing,and a well-formed aluminum/copper lap joint is obtained.The effects of ultrasonic waves and SiO_(2)nanoparticles on the macroscopic and microscopic morphology,organizational structure,mechanical properties and conductive properties of lap joints are analyzed and studied by SEM,EDS,XRD,tensile test and conductivity test.The results show that the lap joint is obtained under the coupling action of ultrasonic waves and SiO_(2)nanoparticles,and the spreading and wetting effect of liquid aluminum on the copper surface is better,the front side of the weld is well formed,and the joint is mainly composed of intermetallic compound layer region and Al-Cu eutectic region.The thickness of the intermetallic compound layer is reduced obviously,and the mechanical properties of the joint is significantly improved.The relative conductivity of the aluminum/copper joint using SiO_(2)nanoparticles and ultrasonic waves is 153.527%IACS,exhibiting improved mechanical properties and electrical conductivity.

关 键 词：超声振动 SiO_(2)纳米颗粒 金属间化合物 力学性能 导电性能 

分 类 号：TG457[金属学及工艺—焊接]