P. N-type Bismuth Rod (Bi2Te3 Rod)

Physical and chemical properties:

Bismuth is a metal element with the element symbol Bi and atomic number 83, which is located in the VA group of the sixth period of the periodic table. The element is silver-white to pink metal, brittle and easy to crush, and the chemical properties of bismuth are relatively stable. Bismuth occurs in nature as free metals and minerals. Density: 9.8 g/cm³. Boiling point: 1564 ℃. Melting point: 271.5 ℃.

Application

Bismuth is mainly used in the manufacture of fusible alloys, with a melting point ranging from 47 to 262 °C. The most commonly used alloys of bismuth with metals such as lead, tin, antimony, and indium are used in fire-fighting devices, automatic sprinklers, and safety plugs for boilers. , in the event of a fire, the pistons of some water pipes will "automatically" melt and spray water.

In the fire protection and electrical industries, it is used for automatic fire extinguishing systems and electrical fuses and solders. Bismuth alloys have the property of not shrinking when solidified, and are used for casting and printing type and high-precision molds.

Bismuth oxycarbonate and bismuth oxynitrate are used to treat skin lesions and gastrointestinal disorders.