Design of Lead-Free Solders and Pollution Control of Lead

Abstract

Due to increase refined lead production and slow industrialization of lead-free solders, hazard of lead to human and environment still existed. Based on pollutions of lead depending on the volatility and the solubility of lead, the new ways to prevent and reduce the pollution of lead were put forward. The lead content in lead-solders could be reduced appropriately and the dense surface film could be formed by micro-alloying in the view of material for reducing the pollution. Low soldering temperature and the optimal soldering process or equipment could also be taken to reduce the pollution of lead.

Preparation and Properties of SMT Environmental Protection and Lead-free Solder Paste

“…Solder paste is the important pillar of surface assembly technology, which directly affects the quality of electronic surface assembly in the aspects of printability and weldability [2]. For a long time, too much attention was paid to the welding performance and comprehensive cost of the traditional solder paste, but ignore the environmental pollution caused by some components or processes such as lead and its compounds, halogens, cleaning agents and so on [3][4][5][6].…”

Preparation of Environmental Protection and High Efficiency Lead-Free Solder Paste

“…Solder paste is the important pillar of surface assembly technology, which directly affects the quality of electronic surface assembly in the aspects of printability and weldability [2]. For a long time, too much attention was paid to the welding performance and comprehensive cost of the traditional solder paste, but ignore the environmental pollution caused by some components or processes such as lead and its compounds, halogens, cleaning agents and so on [3][4][5][6]. Materials.…”