Development of Lead-Free Sn-0.7Cu-Si3N4 composite solders
Lead based solder have been widely used before science have proven lead as one of the hazardous substances which can harm the environment and human health. With the banning usage of lead based solder as interconnect, various lead-free solders have been introduced and some of them are currently be...
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| Format: | Thesis |
| Language: | English |
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| Online Access: | http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44220/1/p.1-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44220/2/full%20text.pdf |
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| Summary: | Lead based solder have been widely used before science have proven lead as one
of the hazardous substances which can harm the environment and human health. With
the banning usage of lead based solder as interconnect, various lead-free solders have
been introduced and some of them are currently being widely used. However, none of
them still can surpass the properties of a lead based solder, which keeps the researches
on lead-free solder still going on and on. In this project, a new lead-free composite
solder was developed by adding various amount of Si3N4 into Sn-0.7Cu solder via
powder metallurgy route which consists of mixing compaction and sintering. Composite
solder was used in order to enhance the properties of the conventional solder. The
project was divided into two phases, where at Phase 1, the optimization of mixing,
compaction and sintering were studied while at Phase 2, the composite solder were
tested, analyzed and compared with the monolithic solder. Upon completion of both
phases, the best amount of Si3N4 was added into Sn-0.7Cu will be proposed. Generally,
the Sn-0.7Cu-Si3N4 composite solder showed improvement compared to the monolithic
solder and it was finally decided that Sn-0.7Cu-0.5Si3N4 was the most preferable
composite solder. |
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