As an advanced ceramic material, hexagonal boron nitride (h-BN) has a broad application prospect due to its excellent properties. Boron nitride composite ceramics, that is, h-BN and other ceramic materials, through physical or chemical methods after high-temperature firing, with excellent characteristics of the ceramic.

With the depth of research, according to the composition, properties and uses, boron nitride-based complex ceramics can be divided into the following categories: pure h-BN ceramics, h-BN/oxide complex ceramics, h-BN/nitride complex ceramics, h-BN/carbide complex ceramics, and h-BN/boride complex ceramics.

Among them, pure boron nitride ceramics have excellent corrosion resistance, high thermal conductivity, as well as high temperature resistance, high insulation, will not be most of the molten metal infiltration, can be used as the production of ultra-high-temperature insulators and high-purity crucibles, in the high-temperature melting furnaces of the insulator device and precious metal melting crucibles on the mature application;

BN-SiO2 and BN-SiO2-AlN composite ceramics compared to pure SiO2 and h-BN ceramics, the two composite has a significant synergistic toughening effect, in the mechanical properties, ablation resistance and densification on the great enhancement, and at the same time, has an excellent moisture resistance, thermal shock resistance and dielectric strength; adding the appropriate amount of AlN, to further enhance the composite ceramics of flexural strength and fracture toughness. These products have good applications in the aerospace field where dielectric properties are required under extreme conditions, and can be used to manufacture high-temperature radomes and so on;

BN-ZrO2 and BN-ZrO2-SiC composite ceramics, on the other hand, combine the refractoriness and wear resistance of zirconia with the non-infiltrability of molten metal of boron nitride, and are widely used in scenarios where they come into contact with molten metal, and have been fabricated into products such as horizontal continuous casting separator rings, double-roll casting side sealing plates, and powder metal atomizing nozzles;

TiB2-BN and TiB2-AlN-BN composite ceramic evaporation boat is the most mature products in the current metal evaporation plating (e.g., aluminum) industry. TiB2 has a high melting point, good corrosion and oxidation resistance, high hardness, high abrasion resistance, and good electrical conductivity and thermal conductivity, h-BN has a good resistance to the erosion of molten metal, thermal shock, good electrical insulation, easy processing, the combination of both excellent mechanical, electrical (resistance can be adjusted) and corrosion resistance; because h-BN and liquid aluminum can react to generate AlN, the aluminum evaporation boat is directly used in the combination of the three to achieve the best use of results. The combination of the two has excellent mechanical, electrical (resistance can be adjusted) and corrosion resistance; because h-BN and liquid aluminum can react to generate AlN, the aluminum evaporation boat is directly used in the combination of the three to achieve the best results.

BN(CHINA) Technology h-BN products are synthesized by advanced continuous calcination equipment, with an annual output of 1,000 tons, stable product performance, strong batch supply capability and outstanding cost advantage. Four specifications are available for your choice:

Four products are available with crystalline particle sizes between 1-5 μm and powder particle sizes D50 between 4 μm and 20 μm.

Among them, PBN700 series and PBN500 series h-BN products produced by BN(china) Technology have high purity, good crystallinity and very low C content. PBN700 series products have good feedback in the use of pure boron nitride ceramics; PBN500 series products are also successfully applied in boron nitride composite ceramics.

Due to the h-BN in 1500 ℃ above the beginning of signs of sintering, sintering is more difficult, easy to form a card room structure, densification difficulties, pure h-BN ceramics in the choice of powder particle size will generally choose a smaller size of the product in order to improve the sintering activity, the other h-BN products according to the user's specific use of the choice of the appropriate size of the powder.