CAJ | 학술논문

以Sn-9Zn合金为研究对象,考察了P的添加对其性能的影响,并对其机制作了初步探讨.通过二次离子质谱(SIMS)分析发现,P的添加显著降低Sn-9Zn合金中的含氧量,从而提高了合金在Cu上的润湿性.P的改善润湿性的效果不仅有利于其工艺性能,也提高了Sn-9Zn/Cu焊点界面的结合强度,只使其塑性略有下降.同时,微量P的添加不改变Sn-9Zn合金与Cu形成的焊点的界面结构.另外,蠕变强度测试结果表明,P的添加能显著提高合金的抗蠕变性能.
이Sn-9Zn합금위연구대상,고찰료P적첨가대기성능적영향,병대기궤제작료초보탐토.통과이차리자질보(SIMS)분석발현,P적첨가현저강저Sn-9Zn합금중적함양량,종이제고료합금재Cu상적윤습성.P적개선윤습성적효과불부유리우기공예성능,야제고료Sn-9Zn/Cu한점계면적결합강도,지사기소성략유하강.동시,미량P적첨가불개변Sn-9Zn합금여Cu형성적한점적계면결구.령외,연변강도측시결과표명,P적첨가능현저제고합금적항연변성능.
Effects of P addition on the properties of Sn-9Zn eutectic lead-free solder alloy have been studied. The results show that P could significantly improve the wettability of Sn-9Zn to Cu because P addition can decrease the content of oxygen in Sn-Zn alloy by the application of Secondary Ion Mass Spectrometry (SIMS) analysis. P addition enhances the creep strength of the Sn-9Zn bulk materials and the shear strength of Sn-9Zn/Cu joints, while decreases its ductility. No significant change in the interfacial structure of Sn-9Zn/Cu joints was observed by addition of P. The mechanisms were also discussed.