Properties Of Ceramics Boron Carbide

High neutron absorption cross section.

Properties of ceramics boron carbide.

As such many of its applications revolve around its wear resistance including such uses as abrasives and nozzles. It also has some interesting and very useful nuclear properties which are used in applications such as power stations. Boron carbide chemical formula approximately b 4 c is an extremely hard boron carbon ceramic and covalent material used in tank armor bulletproof vests engine sabotage powders as well as numerous industrial applications. Typical properties for boron carbide are listed in table 1.

Tribological properties of b 4 c ceramics sometimes are affected by mechanical properties which are in turn controlled by the microstructures of b 4 c ceramics. Ball roller bearings. Boron carbide is characterised by its. The high temperature stability up to 2400 c and the neutron absorption behavior of boron carbide are functionally advantageous for nuclear power plant constructions.

Out of all the grades of advanced ceramics boron carbide has the lowest density of 2 5 g cm3 followed by sintered silicon nitride and carbide and aluminium nitride with a density of just over 3 0 g cm3. Boron carbides are often used in ballistic armor taking advantage of exceptional hardness and low density. This makes the material extremely useful for nozzles and ballistic applications. The hardness provides excellent protection while the light weight maximizes mobility.

1 the combination of extraordinary high stiffness e 450 gpa and low specific weight 2 52 g cm 3 produces an outstanding stiffness weight ratio compared to all other constructional material types. Extreme hardness difficult to sinter to high relative densities without the use of sintering aids good chemical resistance good nuclear properties low density. Mechanical properties of b4c ceramics hot pressed with no additive and crb2 particles distributed in the b4c matrix were measured. 2 boron carbide ceramics can reach high mechanical strength and show exceptional high hardness which results in good abrasion.

Boron carbide machining grinding. Boron carbide b4c is one of the hardest materials known to man. With a vickers hardness of 30 gpa it is one of the hardest known materials behind cubic boron nitride and diamond. Its strong chemical bonds and hard surface minimize wear in rigorous environments.

They are generally heavier than plastics but lighter than steels. Boron carbide is an extremely hard type of ceramic with a low weight.