Electrochemical migration of sintered nanosilver under chloride-containing thin electrolyte layer for power electronic packaging

CORROSION ◽  
10.5006/1909 ◽  
2015 ◽  
Author(s):  
Yana Zheng ◽  
Yunhui Mei ◽  
Chaoyi Yan ◽  
Guo-Quan Lu
Author(s):  
Bokai Liao ◽  
Hongyu Cen ◽  
Zhenyu Chen ◽  
Xingpeng Guo

Background and Objective: The effects of representative solder flux residue weak organic acids on electrochemical migration (ECM) of tin in thin electrolyte layer were studied using a technique based on the coupling of in situ electrochemical measurements and optical observations, as well as ex situ characterizations. Methods and Results: The results showed that the increasing amount of weak organic acid decreased the probability of ECM and dendrites formed were mainly composed of metallic tin. Tin ions reacted with organic compound ions from hydrolysis of weak organic acids to form complexes with electronegativity, which retarded the transfer of tin ions. Some complexes can be oxidized to the insoluble tin oxides on the anode surface and blocked the dissolution of anode during tin ECM. Conclusion: The growth rate of tin dendrite was found to be limited by the dissociation of complexes. Mechanisms involved were proposed to explain the role of weak organic acid in the tin ECM.


2016 ◽  
Vol 112 ◽  
pp. 393-401 ◽  
Author(s):  
Bokai Liao ◽  
Zhenyu Chen ◽  
Yubing Qiu ◽  
Guoan Zhang ◽  
Xingpeng Guo

RSC Advances ◽  
2017 ◽  
Vol 7 (25) ◽  
pp. 15060-15070 ◽  
Author(s):  
Bokai Liao ◽  
Lisha Wei ◽  
Zhenyu Chen ◽  
Xingpeng Guo

A schematic diagram of the effect of Na2S concentration on the ECM behavior of tin, from low concentration to high concentration.


2013 ◽  
Vol 74 ◽  
pp. 71-82 ◽  
Author(s):  
Xiankang Zhong ◽  
Guoan Zhang ◽  
Yubing Qiu ◽  
Zhenyu Chen ◽  
Xingpeng Guo

ChemInform ◽  
2010 ◽  
Vol 23 (39) ◽  
pp. no-no
Author(s):  
M. KEDDAM ◽  
A. HUGOT-LE-GOFF ◽  
H. TAKENOUTI ◽  
D. THIERRY ◽  
M. C. AREVALO

2002 ◽  
Vol 38 (7) ◽  
pp. 601-612 ◽  
Author(s):  
Hua Ye ◽  
Minghui Lin ◽  
Cemal Basaran

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