粉状铝基钎料的钎焊性能研究  

Research on brazeability of aluminum-silicon filler metal powder

作　　者：蔡志红[1] 刘宏江[1] 陈平[1] 贺军四[1] 

机构地区：[1]广东省工业技术研究院(广州有色金属研究院),广东广州510650

出　　处：《材料研究与应用》2011年第1期53-56,共4页Materials Research and Application

摘　　要：介绍了粉状铝基钎料的制备方法·探讨了以粉状铝基钎料为焊料·钎焊铝材的工艺性能．从表面张力的角度出发．讨论了粉末粒度对铝材钎焊工艺和性能的影响．结果表明：采用粒度在150-180μm的粉状铝基钎料钎焊铝材，其焊件的剪切强度较高；采用粒度大于300μm的粗钎料或粒度小于150μm的细钎料钎焊铝材，其剪切强度较低．粉状铝基钎料的氧含量随粒度的减小而增加；用细粉（粒度小于28μm）占3％（质量分数）的粉状铝基钎料钎焊时，钎料的铺展面积与无细粉时的铺展面积相当．This paper briefly introduces the preparation process of aluminum-silicon filler metal powder, and exploits the aluminum brazeability using the above-mentioned powder as the solder. It discusses the influence of powder sizes on the process and performance of aluminum brazing from the aspect of surface tension. The result shows： brazed aluminum plates with powder sizes between 150--180 micron can get higher sheer strength, while brazing with course powder （〉300 micron） or fine powder（〈28 micron）, the shear strength is lower. The oxygen content of the aluminum-silicon filler metal powder increases with the decrease of the powder size. Brazing with the aluminum-silicon filler metal powder which contains less than 3% fine powder （〈28 micron） can get spreading area as nearly large as that brazing without the fine powder.

关 键 词：粉状铝基钎料 钎剂 铝钎焊 表面张力 

分 类 号：TF123.2[冶金工程—粉末冶金]