免清洗钎剂的助焊能力及其限度  

Weldability and Limits of No-clean Flux

作　　者：曹明明[1] 程玲舒 黄文超 唐明[1] 罗虎[1] 王青萌 

机构地区：[1]重庆理工大学材料科学与工程学院,重庆400054 [2]西南技术工程研究所,重庆400039 [3]宜宾市南溪区经济和信息化局,四川宜宾644100

出　　处：《精密成形工程》2013年第5期5-8,17,共5页Journal of Netshape Forming Engineering

摘　　要：讨论了免清洗钎剂的特性和作用机理,应用物理化学原理对其活性的决定因素、助焊能力及其限度进行了分析。结果表明,钎剂的助焊能力主要取决于其选用的活性剂,而免清洗钎剂主要采取复配活性剂的方式提高其活性。尽管钎焊时高活性钎剂能显著提升σ_(s-f),降低σ_(l-f),但却无法使σ(s-l)有效下降,这是钎剂活性难以完全发挥作用的根本原因,因此钎剂的活性是有限度的。The characteristics and function mechanism of no-clean flux were discussed,determinants of activity,fluxing capacity and limit were analysed by principles of physical chemistry.The results show that weldability of no-clean flux mainly depends on the chosen active agents,and no-clean flux mainly adopts the combined surfactant to increase its activity.Although the high activity of flux can significantly improve σ_(s-f),reduce σ_(1-f),but can not make σ_(s-1) effectively descent.This is the fundamental reason why the flux activity is difficult to thoroughly play,so the flux activity is limited.

关 键 词：免清洗 钎剂 助焊性 限度 

分 类 号：TG42[金属学及工艺—焊接]