TY - JOUR
T1 - The Weibull statistical analysis for evaluating microstructural effects on electrification-fusion phenomenon of Sn-xZn alloys
AU - Lan, Gong An
AU - Yang, Chung Wei
AU - Lui, Truan Sheng
AU - Chen, Li Hui
N1 - Funding Information:
This study was financially supported by the National Science Council of Taiwan for which we are grateful (Contract No. NSC 96-2221-E-006-103-MY2).
PY - 2009/5/5
Y1 - 2009/5/5
N2 - Microstructural features of Sn-xZn alloys with varying zinc content of 7, 9, and 14 wt.% on the electrification-fusion phenomenon was investigated in this study. Experimental results showed that the electrical conductivity of Sn-xZn alloys increases with increasing zinc content. The increase of zinc-rich phase is the main factor in the increase of the electrical conductivity. The melting latent heat of Sn/Zn eutectic phase tended to decrease with increasing zinc content, the evidence was consistent with the increase of critical fusion current density of Sn-xZn alloys. Based on the data fluctuation of fusion current densities, the Weibull model provided a powerful statistical analysis for assessing the minimum critical fusion current density, the fusion-failure mechanism and the reliability for the solders. The statistical Weibull model analysis results indicated that the Weibull modulus of Sn-xZn alloys decreases with increasing zinc content. The hypereutectic Sn-14Zn alloy, which shows microstructural inhomogeneity and a large data fluctuation of critical fusion current density, was unreliable for further electronic devices and PCB applications. Crown
AB - Microstructural features of Sn-xZn alloys with varying zinc content of 7, 9, and 14 wt.% on the electrification-fusion phenomenon was investigated in this study. Experimental results showed that the electrical conductivity of Sn-xZn alloys increases with increasing zinc content. The increase of zinc-rich phase is the main factor in the increase of the electrical conductivity. The melting latent heat of Sn/Zn eutectic phase tended to decrease with increasing zinc content, the evidence was consistent with the increase of critical fusion current density of Sn-xZn alloys. Based on the data fluctuation of fusion current densities, the Weibull model provided a powerful statistical analysis for assessing the minimum critical fusion current density, the fusion-failure mechanism and the reliability for the solders. The statistical Weibull model analysis results indicated that the Weibull modulus of Sn-xZn alloys decreases with increasing zinc content. The hypereutectic Sn-14Zn alloy, which shows microstructural inhomogeneity and a large data fluctuation of critical fusion current density, was unreliable for further electronic devices and PCB applications. Crown
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U2 - 10.1016/j.jallcom.2008.08.022
DO - 10.1016/j.jallcom.2008.08.022
M3 - Article
AN - SCOPUS:63649144847
SN - 0925-8388
VL - 475
SP - 294
EP - 299
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -