Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders

Lead-based solders have been used extensively for chip-attach and surface-mount processes in the electronic industry, and in marine applications. However, because of toxicity issues related to lead, efforts to develop a cost-effective lead-free replacement have been ongoing. This work investi...

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Main Author:	Ridhai, Mohammed Noori
Format:	Thesis
Language:	English
Published:	2010
Subjects:	TN1-997 Mining engineering Metallurgy
Online Access:	http://eprints.usm.my/43019/1/Mohammed_Noori_Ridha24.pdf
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id	my-usm-ep.43019
record_format	uketd_dc
spelling	my-usm-ep.430192019-04-12T05:26:51Z Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders 2010-06 Ridhai, Mohammed Noori TN1-997 Mining engineering. Metallurgy Lead-based solders have been used extensively for chip-attach and surface-mount processes in the electronic industry, and in marine applications. However, because of toxicity issues related to lead, efforts to develop a cost-effective lead-free replacement have been ongoing. This work investigates the corrosion behavior and resistance of two lead-free solders, namely Sn-8Zn-3Bi and Sn-3Ag-0.5Cu, and compares their performances with a common lead-based solder of Sn-37Pb at ambient temperature. Spreading, wetting angle, shear, and hardness were measured experimentally using standard methods and instrumentations. Experimental results showed that Sn-8Zn-3Bi has the highest wetting angle, while Sn-37Pb demonstrated the highest spreading. Intermetallic compounds Cu6Sn5 were found to be common in Sn-37Pb and Sn-3Ag- 0.5Cu, on the other hand, Cu6Sn8 was detected for Sn-8Zn-3Bi. The highest joint strength was given by Sn-37Pb represented by 0.09 MPa, which is higher by 66% and 33% than those of Sn-8Zn-3Bi and Sn-3Ag-0.5Cu, respectively. However, corrosion after 240 hr in seawater did not affect the magnitudes of shear strength substantially. This outcome was attributed mainly to the short time duration of exposure. Sn-8Zn-3Bi has the highest hardness among all solders. Corrosion caused an increase in hardness of all solders by 3.1, 6.74 and 2.49% for Sn-37Pb, Sn-8Zn-3Bi and Sn-3Ag-0.5Cu respectively. 2010-06 Thesis http://eprints.usm.my/43019/ http://eprints.usm.my/43019/1/Mohammed_Noori_Ridha24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TN1-997 Mining engineering Metallurgy
spellingShingle	TN1-997 Mining engineering Metallurgy Ridhai, Mohammed Noori Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders
description	Lead-based solders have been used extensively for chip-attach and surface-mount processes in the electronic industry, and in marine applications. However, because of toxicity issues related to lead, efforts to develop a cost-effective lead-free replacement have been ongoing. This work investigates the corrosion behavior and resistance of two lead-free solders, namely Sn-8Zn-3Bi and Sn-3Ag-0.5Cu, and compares their performances with a common lead-based solder of Sn-37Pb at ambient temperature. Spreading, wetting angle, shear, and hardness were measured experimentally using standard methods and instrumentations. Experimental results showed that Sn-8Zn-3Bi has the highest wetting angle, while Sn-37Pb demonstrated the highest spreading. Intermetallic compounds Cu6Sn5 were found to be common in Sn-37Pb and Sn-3Ag- 0.5Cu, on the other hand, Cu6Sn8 was detected for Sn-8Zn-3Bi. The highest joint strength was given by Sn-37Pb represented by 0.09 MPa, which is higher by 66% and 33% than those of Sn-8Zn-3Bi and Sn-3Ag-0.5Cu, respectively. However, corrosion after 240 hr in seawater did not affect the magnitudes of shear strength substantially. This outcome was attributed mainly to the short time duration of exposure. Sn-8Zn-3Bi has the highest hardness among all solders. Corrosion caused an increase in hardness of all solders by 3.1, 6.74 and 2.49% for Sn-37Pb, Sn-8Zn-3Bi and Sn-3Ag-0.5Cu respectively.
format	Thesis
qualification_level	Master's degree
author	Ridhai, Mohammed Noori
author_facet	Ridhai, Mohammed Noori
author_sort	Ridhai, Mohammed Noori
title	Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders
title_short	Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders
title_full	Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders
title_fullStr	Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders
title_full_unstemmed	Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders
title_sort	study of wettability and corrosion behavior of sn-37pb, sn-8zn-3bi and sn-3ag-0.5cu solders
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2010
url	http://eprints.usm.my/43019/1/Mohammed_Noori_Ridha24.pdf
_version_	1747821150127259648

Study Of Wettability And Corrosion Behavior Of Sn-37pb, Sn-8zn-3bi And Sn-3ag-0.5cu Solders

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