Boron Carbide
Boron carbide,a black crystal powder,is one of the hardest Man-Made materials,its hardness with Mohs hardness 9.36 and micronscopic hardness 5400-6300kg/mm2 is only near upon diamond,its density is 2.52g/cm3 and melting point at 2450℃,the boron carbide possesses properties of endurance hi/low temperature,no reaction with either acids or alkalis,high grinding efficency,no magnetism.It is a good replacement of diamond.Boron carbide also possesses the specialty properties of light quality,neutron absorbing,semi-conductivity,etc.so it is used for armed forces and nuclear industry.Boron carbide is widely applied as follows:boriding refractory,ion transfuse,film layer as well as grinding,polishing,drilling hard metal alloys,jewels,etc.Meanwhile,it is main material for the wear-resisting parts,precise meter-resisting parts,precise spray nozzle,sealed washer,smelting boron steel,boron alloy,etc.Boron carbide has showed many better properties of physics and chemistry in the hi-science/technology field.
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