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Corrosion study of SN-BI lead-free solder in alkaline solution


Sazali, Mohd Firdaus (2018) Corrosion study of SN-BI lead-free solder in alkaline solution. Final Year Project thesis, Universiti Malaysia Kelantan. (Submitted)


This thesis study describes the corrosion analysis of Sn-Bi solder lead-free solder in alkaline solution which is potassium hydroxide (KOH). The corrosion potential and current of Sn-Bi in 6 M KOH solution was investigated. The potential sharply increases with increased immersion time before saturation at -1125 mV. Morphological and elemental analyses reveal the formation of oxides on the surface after immersion after using scanning electron microscope (SEM), energy dispersive X-ray (EDX) and X-ray diffraction (XRD). The result of morphology is mostly same as actual shape which are Sn matrix in plateau (dark contrast) meanwhile Bi-rich in lamellar eutectic structure (light contrast). In addition, phase and elemental analyses revealed the formation of mixed corrosion products of SnO, Sn02 and Bi203 on the surface after testing.

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Additional Metadata

Item Type: Undergraduate Final Project Report
Collection Type: Final Year Project
Date: 2018
Call Number: SEB 2018 017
Supervisor: Dr. Mohamad Najmi bin Masri
Programme: Materials Technology
Institution: Universiti Malaysia Kelantan
Faculty/Centre/Office: Faculty of Bioengineering and Technology
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