Combat® Boron Nitride Coatings are entirely inorganic, composed of boron nitride powder and a high-temperature bond phase. Supplied in a liquid form suitable for brushing, Combat Boron Nitride Coatings can be diluted with water to spraying and dipping consistencies and applied to a variety of porous and non-porous materials including graphite, metals, ceramics and organics.
Combat BN Coatings can be used up to 1372°C (2500°F) in a reducing/inert atmosphere and 850°C (1562°F) in an oxidizing atmosphere, and will retain many of the properties of Boron Nitride such as:
Combat Boron Nitride Coatings, also available in green tint for improved visibility during application, are pH neutral, Cobalt and Chromium free. Green tinted coatings remain colorfast at aluminum melt temperatures and can be easily applied as a first coat to white cast refractory that is visible, making it easy to detect touch-up surfaces and reapplication time.
Various grades are differentiated by the type of inorganic binder used, which allows for a range of physical properties such as hardness, adherence, useful temperature range, and ease of use for a variety of applications.
Type Sf is a general purpose coating with Al2O3 binder phase. Comprised of 23% BN, Type Sf is a thick, paste like concentrate that usually requires dilution with water to desired consistency. This grade can also be used as is.
Type 10Sf is a general purpose coating with Al2O3 binder phase, and 10% BN content. This grade has the consistency of liquid slurry. This is a ready to use grade that does not require any additional dilution.
Type A is a high viscosity paste with a unique Aluminum Phosphate binder. With 39% BN content, this grade offers a very strong bond with a variety of refractories. Typically, Type A needs to be diluted to desired consistency.
Type V coatings have a unique Magnesium Silicate binder system that makes it an excellent fit for coating graphite parts. Type A is a thick composition with 31% BN content. It dries to a hard surface and is typically used in applications where a strong binder is needed such as moving parts in molten metal.