solder is an alloy of pb and
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4
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Tin-based solders readily dissolve gold, forming brittle intermetallics; for Sn-Pb alloysthe critical concentration of gold to embrittle the joint is about 4%.
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Indium-rich solders (usually indium-lead) are more suitable forsoldering thicker gold layer as the dissolution rate of gold in indium is much slower.
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Tin-based solders readily dissolve gold, forming brittle intermetallics; for Sn-Pb alloysthe critical concentration of gold to embrittle the joint is about 4%.
.
.
Indium-rich solders (usually indium-lead) are more suitable forsoldering thicker gold layer as the dissolution rate of gold in indium is much slower.
gautamparveen016:
opt zn, cu, sn, pd
Answered by
5
Tin and Lead is the correct answer for your question. Solder is an alloy that is mainly made up of tin and lead.
The solder cam from old french word solduree or soulder or from Latin word solidare which means to make solid. In solders, two fusible metals are used to make an alloy to create a permanent bonding between metals pieces.
Lead (Pb) and tin (Sn) are the commonly used materials for soldering because of their low moderate melting points which ranges from 180-190 degree Celsius.
Lead free solders have made their debut in resent times and grabbed a better popularity.
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