Boron Carbide Ceramic

Its strong chemical bonds and hard surface minimize wear in rigorous environments. Boron carbide b 4 c is a high performance ceramic particle that has low density a large degree of chemical inertness thermal stability at elevated temperatures and outstanding thermo electrical characteristics kalaiselvan et al 2014. The extra hardness of boron carbide provides it the surname black diamond.

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Its composition ranges from b4 3c to b10 4c.

Boron carbide ceramic.

It is a suitable material for many high performance applications due to its attractive combination of properties. Boron carbide is exceptionally hard only diamond and cubic boron nitride materials are known to have a higher hardness. Its outstanding hardness makes it a suitable abrasive powder for lapping polishing and water jet cutting of metals and ceramics. Boron carbide also known as black diamond is the third hardest material after diamond and cubic boron nitride.

With a vickers hardness of 30 gpa it is one of the hardest known materials behind cubic boron nitride and diamond. The material has high wear resistance high compressive strength and low density and is usually produced by hot pressing or hot isostatic pressing techniques to achieve better sintering. Boron carbide is smelted from boric acid and powdered carbon in electric furnace under high temperature. The hardness provides excellent protection while the light weight maximizes mobility.

Boron carbide or b4c is one of the hardest material discovered in 1899. It simply outclasses the conventional abrasives like aluminum oxide and silicon carbide with its superlative and cost effective performance. Indicators for boron carbide ceramic density 2 48g cm mico hardness 3500 kgf mm2 bending strength 400 mpa melting point 2450 operating environment high temperature high grinding high. Depending on hardness of 4950kgf mm2 it is even harder than diamond and cubic boron nitride.

Boron carbide b 4 c is one of the world s hardest manufactured materials. Boron carbide industrial boron carbide powders and grains. Hot pressing including hot isostatic pressing is a way of producing covalent ceramic materials such as b4c which are fully dense and in pure single phase form. Boron carbides are often used in ballistic armor taking advantage of exceptional hardness and low density.

Boron carbide is a super hard abrasive material next only to diamond and cubic boron nitride in hardness. The material which is in a molten state becomes increasingly rich in carbon therefore when the liquid solidifies its composition is one of boron carbide and graphite. Boron carbide b4c boron carbide is one of the hardest known materials being only second to diamond. 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.

Technical boron carbide usually has a high carbon content and is labelled b4c for convenience.