Chapter 5

*Lead Free Solders*

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[30] Watanabe M, Koike K, Kondoh E. Improvement in adhesion of Cu/glass stacks using ZnO thin films deposited by chemical solution methods and its formation conditions. Journal of the Surface Finishing Society of Japan. 2015;**66**:534-539. DOI: 10.4139/sfj.66.534

[31] Watanabe M, Tamekuni S, Kondoh E. Formation of zinc oxide thin film using supercritical fluids and its application in fabricating a reliable Cu/glass stack. Microelectronic Engineering. 2015;**141**:184-187. DOI:

10.1016/j.mee.2015.03.031

[32] Bunting EN. Phase equiliblia in the system SiO2-ZnO. Bureau of Standards Journal of Research. 1930;**4**:131-136. DOI: 10.1111/j.1151-2916.1930.tb16797.x

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