In Kompositkeramiken verwendetes Bornitrid

Boron nitride material has high thermal stability, chemical stability and electrical insulation. At the same time, it has the characteristics of high thermal conductivity, good dielectric properties, and easy processing of products. Its melting point is as high as 2800 degree . It is a typical electrical insulator and an excellent thermal conductor. These unique natural characteristics of BN materials combined with TiB2 can improve the material's thermal conductivity and obtain appropriate resistivity and temperature coefficient of resistance.

BN composite conductive ceramic material evaporation boat is mainly used in vacuum plating industry. Vacuum plating mold is a method to convert vapor-deposited metal materials such as aluminum, silver, gold, titanium, etc. into a vapor under vacuum and high temperature, and then plate it onto metal, glass, silicon wafer, organic mold, paper and other base materials to form a substrate. Metal thin film coatings of tens to hundreds of angstroms. The crucible or boat used for carrying the vapor-deposited metal that has high temperature resistance, resistance to metal solution erosion, strong thermal shock resistance, and heat conduction is the "evaporation boat". Since the introduction of vacuum plating technology in the 1970s, the use of evaporation boats has ranged from the earliest graphite crucibles to later double-crucible systems with boron nitride linings in heating carbon containers, which have poor corrosion resistance and long service life. Short wait can not achieve satisfactory results. It was not until the United Carbide Corporation in the United States introduced the boron nitride composite conductive ceramic material into the production of vacuum plating evaporation boats, and gradually improved and improved the material performance and service life of the evaporation boats.

Darüber hinaus macht die Kombination aus hoher dielektrischer Durchschlagsfestigkeit und hohem spezifischem Durchgangswiderstand h-BN-Keramikprodukte zur Verwendung als elektrische Isolatoren. Aufgrund seiner Neigung zur Oxidation bei hohen Temperaturen wird es häufig im Vakuum und in einer inerten Atmosphäre eingesetzt. Die chemische Trägheit von Bornitrid macht es weit verbreitet in Schutzhülsen für Thermoelemente, Tiegel und Auskleidungen von Reflexionsgefäßen, aber um oxidierende Atmosphären während der Anwendung zu vermeiden.