Effect of bismuth additions on wettability, intermetallic compound, and microhardness properties of Sn-0.7Cu on different surface finish substrates
The influence of bismuth (Bi) addition on wettability, thickness of interfacial intermetallic compound (IMC), and microhardness properties of Sn-0.7Cu + xBi solder alloy using different types of substrate were examined. The 0.5, 1.0, 1.5, and 2.0 wt. % Bi was added into Sn-0.7Cu and fabricated usi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2020
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| Online Access: | http://journalarticle.ukm.my/16190/ http://journalarticle.ukm.my/16190/1/36.pdf |
| Summary: | The influence of bismuth (Bi) addition on wettability, thickness of interfacial intermetallic compound (IMC), and
microhardness properties of Sn-0.7Cu + xBi solder alloy using different types of substrate were examined. The 0.5,
1.0, 1.5, and 2.0 wt. % Bi was added into Sn-0.7Cu and fabricated using the casting process. The result shows that the
influence of 1.5 wt. % Bi in the Sn-0.7Cu solder soldered on copper organic solderability preservative (Cu-OSP) and
immersion tin (Im-Sn) surface finish has improved the wettability and microhardness. Subsequently, the IMC thickness
of Sn-0.7Cu+1.5Bi solder alloy on Im-Sn surface finish gives a better result than reflowed on Cu-OSP. Generally,
with the addition of 1.5 wt. % Bi in Sn-0.7Cu solder alloy reflowed on the Im-Sn surface finish had enhanced the
performance in terms of wettability, thickness of IMC and microhardness properties compared to on Cu-OSP surface
finish. |
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