Thermal Conductivity Of Boron Nitride Ceramic

It offers very high thermal conductivity and good thermal shock resistance.

Thermal conductivity of boron nitride ceramic.

Unlike graphite bn is a very good electrical insulator. Boron nitride or bn is an advanced ceramic material that is easily machined into solid or powder form or other complex shapes. Boron nitride has high thermal conductivity with low thermal expansion and also has unsurpassed thermal shock resistance. Boron nitride is often referred to as white graphite because it is a lubricious material with the same platy hexagonal structure as carbon graphite.

An anisotropic high temperature ceramic exhibiting a combination of high electrical resistance and thermal conductivity pyrolytic boron nitride is an excellent candidate to consider for applications where superior strength low coefficient of thermal expansion and thermal shock resistance are required. Boron nitride is a thermally and chemically resistant refractory compound of boron and nitrogen with the chemical formula bn it exists in various crystalline forms that are isoelectronic to a similarly structured carbon lattice. High performance high temperature ceramic compound. Boron nitride is an advanced synthetic ceramic material available in powder solid liquid and aerosol spray forms.

Its unique properties from high heat capacity and outstanding thermal conductivity to easy machinability lubricity low dielectric constant and superior dielectric strength make boron nitride a truly outstanding material. The thermal conductivity parallel and perpendicular to the hot pressing direction of hot pressed h bn was measured to investigate the effects of oxide additive species and compositions on the thermal conductivity cao mgo y 2 o 3 yb 2 o 3 and their mixtures were selected as oxide additives owing to their previously demonstrated ability to enhance the thermal conductivities of non oxide. The hexagonal form corresponding to graphite is the most stable and soft among bn polymorphs and is therefore used as a lubricant and an additive to cosmetic products. Julie runyan rosario a.

It has high heat capacity outstanding thermal conductivity easy machinability lubricity low dielectric constant and superior dielectric strength. General boron nitride information. I analysis of mclachlan equation and modeling of the conductivity of boron nitride boron carbide and boron nitride silicon carbide composites journal of the american ceramic society 10 1111 j 1151 2916 2001 tb00866 x 84 7 1490. Its unique properties from high heat capacity and outstanding thermal conductivity to easy machinability and superior dielectric strength make boron nitride a truly outstanding material.