Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman
In the past few years, tin-lead (Sn-Pb) solder alloys had been popularly used in the electronic industries especially in packaging. However, lead and lead containing alloys have been banned because of environmental and health concerns. Recently, efforts are being made to develop a usable lead-fre...
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| Format: | Thesis |
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2018
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| Online Access: | http://studentsrepo.um.edu.my/9156/ http://studentsrepo.um.edu.my/9156/1/Nurul_Liyana_Binti_Kamaruzaman.jpg http://studentsrepo.um.edu.my/9156/11/liyana.pdf |
| _version_ | 1848773849919782912 |
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| author | Nurul Liyana, Kamaruzaman |
| author_facet | Nurul Liyana, Kamaruzaman |
| author_sort | Nurul Liyana, Kamaruzaman |
| building | UM Research Repository |
| collection | Online Access |
| description | In the past few years, tin-lead (Sn-Pb) solder alloys had been popularly used in the
electronic industries especially in packaging. However, lead and lead containing alloys
have been banned because of environmental and health concerns. Recently, efforts are
being made to develop a usable lead-free solder to substitute tin-lead based solder
alloys. Comparing to other solders, tin-silver-copper (Sn-Ag-Cu) free solder alloys seem
to be the best alternative to replace traditional lead-tin based solder alloys. In the present
study, the corrosion characteristics of lead-free solder alloys such as Sn-1.0Ag-0.5Cu-
XZn (X= 0, 0.1, 0.5. 1.0) and Sn-1.0Ag-0.5Cu-XAl (X=0, 0.1, 0.5, 1.0) have been
investigated in 3.5wt-% NaCl solution. The corrosion behavior of were studied through
Polarization curve and the Electrochemical Impedance Spectroscopy (EIS) by using
Gamry Echem Analyst DC105 software. The microstructure and element of the
corrosion compounds formed on the surface of lead-free solder alloys were investigated
by Scanning Electron Microscopy (SEM), Energy-dispersive X-ray Spectroscopy
(EDX), and X-ray Diffraction (XRD). The polarization curves showed that the addition
of Zn in SAC105 solder alloy increased the corrosion current density and shifted the
corrosion potential towards more negative values. As a result, the corrosion resistance
of Sn-1.0Ag-0.5Cu-XZn alloys reduces with the increase of Zn concentration. The EIS
results agreed well with the findings obtained from polarization curves. The corrosion
products at the surface of the investigated Zn doped alloys constituted of Sn3O(OH)2Cl2,
SnO, SnO2 and ZnO. Like Zn, addition of Al also decreases the corrosion resistance of
the SAC 105 solder alloy |
| first_indexed | 2025-11-14T13:48:57Z |
| format | Thesis |
| id | um-9156 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T13:48:57Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-91562021-05-18T20:34:11Z Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman Nurul Liyana, Kamaruzaman TJ Mechanical engineering and machinery In the past few years, tin-lead (Sn-Pb) solder alloys had been popularly used in the electronic industries especially in packaging. However, lead and lead containing alloys have been banned because of environmental and health concerns. Recently, efforts are being made to develop a usable lead-free solder to substitute tin-lead based solder alloys. Comparing to other solders, tin-silver-copper (Sn-Ag-Cu) free solder alloys seem to be the best alternative to replace traditional lead-tin based solder alloys. In the present study, the corrosion characteristics of lead-free solder alloys such as Sn-1.0Ag-0.5Cu- XZn (X= 0, 0.1, 0.5. 1.0) and Sn-1.0Ag-0.5Cu-XAl (X=0, 0.1, 0.5, 1.0) have been investigated in 3.5wt-% NaCl solution. The corrosion behavior of were studied through Polarization curve and the Electrochemical Impedance Spectroscopy (EIS) by using Gamry Echem Analyst DC105 software. The microstructure and element of the corrosion compounds formed on the surface of lead-free solder alloys were investigated by Scanning Electron Microscopy (SEM), Energy-dispersive X-ray Spectroscopy (EDX), and X-ray Diffraction (XRD). The polarization curves showed that the addition of Zn in SAC105 solder alloy increased the corrosion current density and shifted the corrosion potential towards more negative values. As a result, the corrosion resistance of Sn-1.0Ag-0.5Cu-XZn alloys reduces with the increase of Zn concentration. The EIS results agreed well with the findings obtained from polarization curves. The corrosion products at the surface of the investigated Zn doped alloys constituted of Sn3O(OH)2Cl2, SnO, SnO2 and ZnO. Like Zn, addition of Al also decreases the corrosion resistance of the SAC 105 solder alloy 2018-07 Thesis NonPeerReviewed image/jpeg http://studentsrepo.um.edu.my/9156/1/Nurul_Liyana_Binti_Kamaruzaman.jpg application/pdf http://studentsrepo.um.edu.my/9156/11/liyana.pdf Nurul Liyana, Kamaruzaman (2018) Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/9156/ |
| spellingShingle | TJ Mechanical engineering and machinery Nurul Liyana, Kamaruzaman Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman |
| title | Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman |
| title_full | Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman |
| title_fullStr | Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman |
| title_full_unstemmed | Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman |
| title_short | Effects of Zn and A1 on corrosion characteristics of Sn-1.0Ag-0.5Cu alloys / Nurul Liyana Kamaruzaman |
| title_sort | effects of zn and a1 on corrosion characteristics of sn-1.0ag-0.5cu alloys / nurul liyana kamaruzaman |
| topic | TJ Mechanical engineering and machinery |
| url | http://studentsrepo.um.edu.my/9156/ http://studentsrepo.um.edu.my/9156/1/Nurul_Liyana_Binti_Kamaruzaman.jpg http://studentsrepo.um.edu.my/9156/11/liyana.pdf |