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Boron

Physical Property of Boron

Symbol of element: B

Relative atomic mass: 10.82

Isotopes: B10, B11

Density: amorphous boron2.3g/cm3

Melting point: 2300 C

Boiling point: 2550C

Linear expansibility: 210-6

When it is heated from 0C to 600C, the electrical conductivity increases 100 times.

Mohs scale of hardness9 min

Fields of application:

Rich burning fuelits powder is neutrallarge specific impulse it is the ideal propellant material.

Aerospace: rocket nozzle material; cruise missile fuel; aerospace alloys materiallithium boron alloys powder

Military industrybullet-resisting ceramics, bullet-resisting glass; bullet-proof helmet; body armor; protection apron of armored car 

Mechanical industry: milling machines; milling cutterturning tool; special bearing;  wearable ceramics; special steel used in machinery; drilling bit; welding powders of special parts.

Nuclear industry:Nuclear leak defence material; neutron absorber and neutron counter in nuclear reactor

Electronics: superconducting material; magnetic substance; electron admixture; amorphous alloy materials

Chemicalchemical and protective coatings

Special alloys: boron carbide; calcium borideiron boronmanganese boron and so on.

 

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