PBN Filament Ring

Product Information

Pyrolytic Boron Nitride (PBN) is a kind of advanced ceramic, can be produced with 99.999% purity in high density. Pyrolytic Boron Nitride (PBN) Filament Ring and other pyrolytic boron nitride products are synthesized on the mold by chemical vapor deposition (CVD) process, with BCl3 and NH3 at high temperature and low pressure. NH3 +BX3=BN+3HX ， PBN products are extremely pure, as the purity of gas material is easier to be controlled. Typically, PBN products have a total impurity of <100 ppm, which means the purity is no less than 99.99%. With such a high purity level, PBN rings are ideal products for semiconductor industries & vacuum systems. With its high density and purity, PBN is becoming a widely used material in vacuum processes. The CVD process gives this pyrolytic boron nitride an almost perfect layered structure, which leads to anisotropic thermal conductivity, making it an ideal material to make components for furnace & vacuum systems. Pyrolytic Boron Nitride (PBN) is frequently used to make filament rings to hold Ta wire in MBE equipment, due to its high working temperature and vacuum property.

Synonyms

h-BN; Elbor; hexagonal boron nitride; Boron mononitride; Nitridoborane; Nitriloborane

Pyrolytic Boron Nitride (PBN) Filament Ring Specifications

Dimensions

Per your request or drawing

We can customized as required

Properties（Theoretical)）

Advantage

● Non-toxic and odorless;

● No react with most molten metals, semiconductors, and their compounds;

● -The oxidation resistance is good below 1000 °C;

● -Good thermal shock resistance –

● The use temperature is high, there is no sublimation point, and it is directly decomposed into B and N above 3000 °C

● High purity (99.999%)

● Low outgassing in high temperature

● Uniform thickness, Good consistency in heating

● Excellent thermal conductivity and shock resistance

● Easy cleaning and Reusability

● High density (> 2.12g/cm³)

● High interlayer strength, easy to clean and repeated use

● No react with acid, alkali, salt, and organic reagents at room temperature, and slightly corroded in molten salt or alkali solution, but it can resist corrosion of various acids at high temperature;

Pyrolytic Boron Nitride (PBN) Filament Ring Applications

-Boron Nitride components for PVD, MOCVD, MBE system.

-Nozzles for nonferrous metals metallurgy industry

-Spacers for glass melting

-Crucibles for crystal growth

–Break rings for horizontal casting machine

–Insulators for high temperature furnace

–Electric insulators in vacuum system

–Feed through for high voltage equipment

PBN ceramic materials have high purity, chemical inertness and excellent thermal conductivity, making PBN crucible an ideal container for elemental purification, crystal growth and semiconductor manufacturing, especially for the preparation of next-generation compound semiconductors such as GaAs, InP, etc.

At the same time, PBN products are also widely used in aviation, aerospace, electronics, chemical, special metallurgy, medical and other fields.

Pyrolytic Boron Nitride (PBN) Filament Ring Packing

Standard Packing:

Sealed bags in carton boxes. Special package is available on request.

As a ceramic material, boron nitride is quite fragile in a lot of cases. The Pyrolytic Boron Nitride (PBN) Filament Ring s are usually held in plastic bags by vacuum, and protected with heavy foam.

Our Pyrolytic Boron Nitride (PBN) are carefully handled to prevent damage during storage and transportation and to preserve the quality of our products in their original condition.

Chemical Identifiers