1.0%Zn,Ni对Sn-3.5Ag/Cu界面反应及化合物生长的影响

被引:3
作者
余春
肖俊彦
陆皓
机构
[1] 上海交通大学材料科学与工程学院
关键词
无铅钎料; 合金元素; 界面反应; 金属间化合物;
D O I
暂无
中图分类号
TG425 [钎焊材料];
学科分类号
摘要
在微电子互连结构中,反应界面化合物层的形貌及厚度是决定焊点可靠性的一个重要因素。通过向Sn-3.5Ag共晶钎料中添加第三元素,分别研究元素Zn和Ni对Sn-3.5Ag/Cu界面反应的影响。结果表明,对于Sn-3.5Ag/Cu界面,液态反应初始生成物为Cu6Sn5,在随后的热老化阶段形成Cu3Sn化合物层;Zn元素不影响界面的初始生成相及其厚度,但在150℃老化阶段,Cu3Sn化合物的形成受到抑制,取代的是非连续的Cu5Zn8化合物层,并且,化合物层增厚速度减慢;然而,当添加1·0%(质量分数)的Ni元素后,界面初始生成相为(Cu,Ni)6Sn5,该化合物层厚度明显大于前者,老化阶段界面无其它相生成。
引用
收藏
页码:81 / 83+157 +157
页数:4
相关论文
共 7 条
[1]  
Improvement of microstructure and interface structure of eutectic Sn–0.7Cu solder with small amount of Zn addition[J] . Fengjiang Wang,Xin Ma,Yiyu Qian.Scripta Materialia . 2005 (6)
[2]  
Interfacial reactions between lead-free solders and common base materials[J] . T. Laurila,V. Vuorinen,J.K. Kivilahti.Materials Science & Engineering R . 2005 (1)
[3]  
Growth and morphology of the intermetallic compounds formed at the Sn–9Zn–2.5Ag/Cu interface[J] . Tao-Chih Chang,Moo-Chin Wang,Min-Hsiung Hon.Journal of Alloys and Compounds . 2005 (1)
[4]  
Effects of cooling rate on the microstructure and tensile behavior of a Sn-3.5wt.%Ag solder[J] . F. Ochoa,J. J. Williams,N. Chawla.Journal of Electronic Materials . 2003 (12)
[5]   Formation and growth of interfacial intermetallic layers in eutectic Sn-Ag solder and its composite solder joints [J].
Choi, S ;
Lucas, JP ;
Subramanian, KN ;
Bieler, TR .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2000, 11 (06) :497-502
[6]  
Mechanical fatigue characteristics of Sn-3.5Ag-X (X=Bi, Cu, Zn and In) solder alloys[J] . Yoshiharu Kariya,Masahisa Otsuka.Journal of Electronic Materials . 1998 (11)
[7]   Prediction of interface reaction products between Cu and various solder alloys by thermodynamic calculation [J].
Lee, BJ ;
Hwang, NM ;
Lee, HM .
ACTA MATERIALIA, 1997, 45 (05) :1867-1874