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About Lead, Tin and Low Melting Alloys
Lead, tin and low melting alloys are non-ferrous alloys used in the manufacture of solders, semiconductors, batteries, optical and decorative products. Examples include antimony (Sb), bismuth (Bi), cadmium (Cd), indium (In), zinc (Zn), lead (Pb), and tin (Sn). Lead, tin and low melting alloys such as indium are used in bearing alloys, transistors, rectifiers, thermistors, and photoconductors. While many metals or alloys have a white or silvery appearance, white metal is term commonly used to describe the group of low melting point metals and alloys.
Many lead, tin and low melting alloys are important constituents or components of compound semiconductors (III-V compounds), optical, or optoelectronic materials and thin film coatings. For instance, indium tin oxide (ITO) coatings provide a transparent and conductive layer and are used on photovoltaic cells, solar panels and window heaters. Examples of compound semiconductors or optical materials using a low melting point metal constituent include gallium arsenide (GaAs) and indium antimonide (InSb), cadmium selenide (CdSe), and lead telluride (PbTe). Many lead, tin and low melting alloys have a diffusion coefficient comparable to arsenic and an order of magnitude that is lower than the diffusion coefficient of phosphorous.
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ASTM B774 -00(2005)e1 Standard Specification for Low Melting... See ASTM International Information |
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EEE Links Vol. 2, No. 3 The tin-lead binary system forms an eutectic with a melting temperature of 183°C. Other lead based alloys containing higher wt% lead (90 - 95%) are |
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JOHNSON MFG. CO., Lead-Free Solders and Fluxes Johnson Mfg. Co., "It Can Be Done" with Johnson's Lead-Free Solders, Soldering Fluxes, Johnson Soldering Fluid, Paste Solders, Tinning Compounds, See Johnson Manufacturing Company Information |
