Fast Spreading of Liquid SnPb Solder on Gold-coated Copper Wheel Pattern

材料科学技术（英文）, 2010, 26(12): 1143-1147.

^1, , ^2, , ^3, , ^4,

1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

3.Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801,USA

4.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China;Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801,USA

基金项目: This study was supported by the National Natural Science Foundation of China(50501022) the National Basic Research Program of China(2004CB619306)

Fast Spreading of Liquid SnPb Solder on Gold-coated Copper Wheel Pattern

Wei Liu ^1, , Lei Zhang ^2, , K.J.Hsia ^3, , J.K.Shang ^4,

1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

3.Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801,USA

4.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China;Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801,USA

Keywords： Wetting

The reactive Sn63Pb37 spreading on patterned film structures was examined in a reducing atmosphere (H_2 5%+Ar 95%). Liquid solder spreading was observed to follow the wheel pattern made of Au/Cu thin film.At the center, a liquid cap was formed around the hub by viscous spreading of the liquid front. Ahead of the main viscous flow front, a liquid film was found to be extended on thin Au-Cu lines at a fast rate to a great distance by rapid Sn-Au chemical reaction.

参考文献

[1]	D. W. Zheng;Weijia Wen;K. N. Tu .In situ scanning electron microscopy study of eutectic SnPb and pure Sn wetting on Au/Cu/Cr multilayered thin films[J].Journal of Materials Research,1999(3):745-749.

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