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What property does bismuth Powder have?
Metal bismuth is a metal with a silvery white (pink) to light yellow luster. It has brittle and easily crushed properties. Metal bismuth, a metal that has a brittle and easily broken luster of silvery white to light yellow, is a metal that is stable in the air.Bismuth occurs in nature as oxide bismuth dioxide (Bi2O3) or sulfide-bismuthite. Bismuth Loess is created by the oxidation process of bismuthite, bismuth, and other bismuthcontaining sulfides. Because bismuth’s melting point is low, it can easily be reduced with charcoal.
When bismuth is heated to a temperature above the melting point it will burn, emitting a light-blue flame and bismuthtrioxide. Bismuth powder can be combined when red hot with sulfur or halogen. Bismuth powder does not dissolve in water, and it is also insoluble in nonoxidizing acids like hydrochloric. Even concentrated sulfuric and concentrated hydrochloric acids only react slightly upon heating. But it is soluble when heated in aqua regia, and concentrated nitric.
What is the application of bismuth?
A small amount bismuth can be added to steel to improve the performance. Bismuth can also be added to malleable casting iron to give it properties similar to stainless steel.
Bi-base low melting point alloy
For cold stamping, thin metal plates are formed using an alloy of bismuth and tin. The alloy can be reused many times because the temperature is no lower than that of the steel mould.
Electric appliances, safety device, automatic device indicators, etc., are all made from a low melting point alloy composed of aluminum powder, tin cadmium and bismuth.
The astringent action of bismuth medicines is used for surgery to treat hemostasis and trauma.
Application of Bismuth in Flame Retardant
Bi203, among flame retardant chemicals, has a greater effect than Sb203. It is also non-toxic and safe. The smoke that is produced during combustion can be extremely harmful and has no effect on the stability of flame retardant products.
Use of Bismuth in Chemical Industry
Bismuth Yellow pigment is made from a combination of bismuth vanadate and bismuth mollybdate. It can be used as a substitute for lead, cadmium or other pigments. It has excellent surface resistance against chemical corrosion. It also has a strong adhesion, bright color and a good surface. It is difficult to fade and fall off.
Electronic ceramics with bismuth powder are used as a scintillation material in devices like nuclear radiation sensors, x ray level scanners.
Air conditioners and refrigerators are assembled using high-purity powders of bismuth combined with tellurium and other elements such as selenium and antimony. Artificial bismuth can be used as a photoresistor in photovoltaics devices, and to increase the sensitivity on the visible spectrum.
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