Nitride Bonded Silicon Carbide

Nitride-bonded silicon carbide (NBSIC) is widely known for its superior mechanical strength and thermal stability. Furthermore, NBSIC features exceptional oxidation resistance that makes it suitable for harsh environments.

Due to its low thermal expansion coefficient, high hardness, rigidity and thermal conductivity properties, rubber makes a versatile material suitable for many uses. It can withstand high temperatures while remaining flexible – making rubber an excellent choice for process furnace walls or kiln furniture sidewalls.

High Strength

Nitride-bonded silicon carbide (NBSC) is an advanced ceramic material with outstanding thermal, mechanical, and chemical properties that is used in various applications from high-performance cutting tools and ceramics to refractory materials.

NBSiC is produced by reacting finely divided silicon carbide particles with nitrogen gas at elevated temperatures, in the presence of an appropriate binder, in a special furnace known as a nitriding reactor. The process is closely monitored in terms of temperature, flow rate, temperature control of nitriding furnace temperature settings as well as controlling system adjustments to achieve optimal conditions for its reaction.

NBSiC boasts superior resistance to abrasion and impact as well as excellent corrosion and chemical resistance, making it suitable for harsh environments while providing wear resistance and thermal stability in many applications.

Nitride-bonded silicon carbide bricks (NBSC) boast significantly greater wear resistance than steel and padding weld, two common choices used in metal-mineral tribology pairs. Their strength in light soil with loose granules outshines that of steel/padding weld combinations eightfold! In heavy soil they’re even eight times more wear resistant! Additionally, these bricks resist acid/alkali erosion as well as offer excellent resistance against slag build-up.

High Temperature Resistance

Nitride-bonded silicon carbide (NBSC) is an exceptional material with superior strength and high temperature resistance, thanks to the SiC phase which offers high inherent mechanical strength and resists creep, oxidation and corrosion at elevated temperatures; and Si3N4 which improves fracture toughness – making NBSC an excellent material solution when material performance is paramount. This combination makes NBSC suitable for applications where performance matters the most.

Nitride-bonded silicon carbide refractories have proven their worth in numerous applications requiring high load carrying capacities at elevated temperatures, such as smelting nonferrous metals such as copper, zinc and aluminium. Their higher service life provides advantages over cast metallic or rubber linings.

These refractory materials boast excellent chemical resistance to acids and alkalis, outstanding erosion resistance in molten salts, and thermal shock resistance – along with lower processing costs and better handling rapid changes in temperature than SiC-based ceramics.

Nitride-bonded silicon carbide excelled at resisting abrasive wear testing under different soil conditions than steel and C+ Cr+ Nb padding weld in diverse applications of civil engineering applications, showing two or more times lower wear-rate than both materials in light soil conditions compared with steel and C + Cr + Nb padding weld padding weld padding weld padding weld, according to grain size distribution of the soil being worked upon; its performance depended largely on grain size distribution of working surfaces being worked upon. Nitride-bonded silicon carbide performed two or more times better in light soil; its performance clearly indicated its suitability as an ideal alternative solution in civil engineering applications than traditional wear resistant steel options such as C + Cr + Nb padding weld padding weld padding weld C + Cr + Nb padding weld padding weld padding weld padding weld material. These results further indicate its suitability as an ideal abrasive wear resistant steel materials in civil engineering applications; it should therefore serve as an ideal alternative material with which civil engineers can work more easily using than traditional wear resistant steel in civil engineering applications than steel in these civil engineering applications than its wear resistant steel counterpart. These results confirm its suitability as an excellent material in civil engineering applications than its steel counterpart. These results demonstrate its suitability as an ideal alternative in civil engineering applications abrasive wear resistant steel material in civil engineering applications due to civil engineering applications where wear resistant steel cannot perform at present for civil engineering application and civil engineering application with civil engineering applications where civil engineering application will certainly need no shortage exists in abrasive wear resistant steel alternatives available only steel available.

High Wear Resistance

Nitride-bonded silicon carbide (NBSiC) boasts superior abrasion and impact resistance as well as outstanding tribological properties, such as being capable of transmitting compressive and tensile loads while withstanding stretching or bending without deformability issues.

NBSIC can be formed into various shapes, sizes and profiles using various forming processes. From simple cone and sleeve shapes to complex engineered pieces for raw material processing equipment. Furthermore, its high strength and chemical resistance makes it suitable for furnace lining applications such as the lower part of a blast furnace body or waist/belly applications.

Nitride bonded silicon carbide has superior abrasive wear resistance when compared with steel and padding weld, as well as wear-resistant cement that is often employed in soil mass working conditions. However, its resistance can depend on factors like composition of soil mass composition as well as grain size distribution – typically decreasing as grain sizes increase.

NBSIC stands out for its chemical purity and resistance to tribological and thermal shock, making it suitable for high-temperature applications such as the sidewalls of aluminum melting pots, nonferrous metal smelting operations, machinery manufacturing operations and waste incineration processes. Withstanding temperatures up to 1600oC without losing strength it is also popularly chosen for kiln furniture such as hearth plates, recuperator tubes and pusher slabs.

High Thermal Conductivity

Nitride-bonded silicon carbide offers excellent thermal conductivity, quickly and efficiently absorbing and dissipating heat. This makes it suitable for applications requiring high temperature resistance, low thermal expansion, or thermal shock resistance.

Aluminium is chemically inert and resistant to most acids and alkalis, making it suitable for use in environments prone to corrosion. Furthermore, its resistance allows it to withstand temperatures approaching 1600oC without suffering any loss in strength, making it the material of choice for wafer tray supports and paddles used in semiconductor furnaces as well as resistors like thermistors and varistors that need excellent thermal stability.

The nitride bonding process is key to these ceramics’ unique properties. This involves reacting a powdered mix of silicon carbide with nitrogen gas at high temperatures in the presence of sintering aids like magnesium. This creates silicon nitride (Si3N4) which hardens into dense ceramic materials that make up solid ceramic structures.

CUMIREX and CUMISTAR produce silicon carbide bricks bonded with nitride to produce products with multiple advantages: