Gold-tin alloy, also known as gold-tin eutectic (AuSn20), is an alloy material prepared by electrolysis.
It is mainly composed of two chemical elements, gold (Au) and tin (Sn), with gold accounting for 80% and tin accounting for 20% by mass.
This alloy is widely used in the field of electronic packaging due to its unique physical and chemical properties.
The main characteristics of gold-tin alloy include:
Low melting point: Gold-tin alloy is known for its low melting point (such as the lowest melting point of eutectic gold-tin alloy is about 280°C), which makes it easier to melt and form a good welding joint during high-temperature welding.
Good electrical and thermal conductivity: Both gold and tin are good conductors, so gold-tin alloy also inherits these characteristics and is suitable for application scenarios that require high electrical and thermal conductivity.
Excellent mechanical properties: Gold-tin alloy has high strength and toughness, and can provide good mechanical support and protection.
Environmentally friendly and cyanide-free: In modern preparation processes, the preparation process of gold-tin alloy often adopts environmentally friendly and cyanide-free technology, which meets the environmental protection requirements of modern industry.
In summary, gold-tin alloy is an alloy material composed of two elements, gold and tin, with low melting point, good electrical and thermal conductivity, excellent mechanical properties, and environmental protection and cyanide-free. It has broad application prospects in the fields of electronic packaging, aerospace, precision instruments, etc.