Boron Nitride Insulator

Boron nitride insulator is made of hexagonal BN ceramic. Boron nitride ceramic has a high melting point, high collapse resistance and chemical compatibility at high temperature. It has a very large voltage resistance value at high temperature and is very suitable to be used as electrical insulating material under high temperature using environment. With the continuous enhancement of the effect of boron nitride ceramic, its application range will become wider. The following are three typical applications.

● PVD and Plasma Systems

Parts made of sintered boron nitride offer perfect thermal protection and excellent electrical insulating performance for PVD and Plasma systems. Boron nitride plasma insulators products like insulating shrouds and rails, target frames, protection tubes, shields and liners and also insulators ensure that the PVD arc stays confined towards the target, avoiding device injury. In addition to our highly developed h-bn insulator line of products across both PVD-ARC, Plasma and CVD systems UNIPRETEC is capable of delivering precisely machined parts produced to customer needs with our wide facilities.

● Solar and Photovoltaic Engineering

Solar modules include crystalline silicon solar cells based on mono- or multicrystalline wafers. Such wafers are fabricated utilizing high temperature facilities in which the copper or graphite heating components are covered using ceramic electrical insulators. The reliability of these processing methods tends to be optimised, but then at the same time the output limits of these ceramic insulators are being severely encroached upon.

Boron nitride ceramics provide, in clear comparison to other technical ceramics, a large improvement in service life, rendering BN insulator the top overall advanced ceramic choice for use in the fabrication of mono- or multicrystalline silicon wafers. The remarkable electrically insulating characteristics of boron nitride ceramics, particularly when coupled with their special thermal properties, ensures that products in this material always offer by far the greatest, and sometimes the only option in this application field.

● High Temperature Furnaces

The architecture of high temperature furnaces running at temperatures considerably > 1500 °C combines heating elements made from carbib, tungsten or molybdenum. Generally , these components are electrically isolated from the furnace sidewalls using high temp. oxide ceramics. These oxide ceramic insulators are highly stressed provided the increasing trend to hire shorter output cycles with higher heating and cooling speeds, contributing to early part failures and increased furnace downtime. This carries with it a major repair task.

In comparison to the conventional usage of alumina ceramic, the functional cycle of parts made from hexagonal boron nitride, is considerably longer. Matter of fact, for thermal processes at exceptionally high temperatures and vacuum or in inert environments, these hex BN ceramics sometimes provide the only viable alternative. For this sector UNIPRETEC is able to supply precision machined boron nitride ceramic insulator components such as sleeves, tubes, washers, insulators, insulating plates, spools, flanges and other parts exposed to severe thermal stresses – to satisfy client particular needs.

Material Properties

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