Thermal Conductivity Of Boron Nitride Ceramic

Boron nitride is an advanced synthetic ceramic material available in solid and powder form.

Thermal conductivity of boron nitride ceramic.

Gerhardt robert ruh electrical properties of boron nitride matrix composites. 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. Julie runyan rosario a. 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.

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. 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. Boron nitride is often referred to as white graphite because it is a lubricious material with the same platy hexagonal structure as carbon graphite. 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.

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 and superior dielectric strength make boron nitride a truly outstanding material. Boron nitride or bn is an advanced ceramic material that is easily machined into solid or powder form or other complex shapes.

It has high heat capacity outstanding thermal conductivity easy machinability lubricity low dielectric constant and superior dielectric strength. 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. It offers very high thermal conductivity and good thermal shock resistance. Boron nitride has a dielectric strength of nearly 2300 volts per mil making it an excellent low loss insulator.