Pyrolytic Boron Nitride (PBN) Belongs to the Hexagonal System

Product introduction

Pyrolytic boron nitride (PBN) belongs to the hexagonal system and is an advanced ceramic material with a purity of 99.999%. It is resistant to acid and alkali, oxidation and thermal conductivity. It is dense and processable. It is formed by chemical vapor deposition (CVD) of ammonia and boron halide under high temperature and high vacuum conditions. It can prepare PBN sheet or directly prepare PBN final products such as crucible, boat and coating.

Main feature

Unlike ordinary hot-pressed boron nitride (BN), it does not have to undergo a conventional hot-press sintering process without adding any sintering agent, so the obtained product has the following remarkable features:

(1) Pyrolytic boron nitride is non-toxic and odorless;

(2) The purity of PBN is very high, generally reaching 99.999% or more;

(3) PBN does not react with acids, bases, salts and organic reagents at room temperature; it is slightly corroded in molten salt or alkali solution; but it can resist corrosion of various acids at high temperatures;

(4) It does not react with most molten metals, semiconductors and their compounds;

(5) The oxidation resistance is good below 1000 °C;

(6) Good thermal shock resistance, no cracks were found in the water at 2000 °C;

(7) High use temperature, no sublimation point; directly decomposed into B and N above 3000 °C;

(8) High resistance and good electrical insulation performance;

(9) The surface is smooth and free of pores.

Applications

(1) OLED evaporation unit

(2) Semiconductor single crystal growth (VGF, LEC) crucible

(3) Molecular beam epitaxy (MBE) evaporation

(4) MOCVD heater

(5) Polycrystalline synthetic boat

(6) PBN infrared window

(7) Satellite communication microwave tube

(8) PBN coated carrier

(9) High temperature, high vacuum equipment insulation board

Main performance parameters