Nitride Bonded Silicon Carbide Delivers Superior Mechanical Strength
Nitride-bonded silicon carbide offers an exceptional combination of mechanical strength, thermal stability and chemical resistance – making it the go-to material for applications such as furnace linings and kiln furniture where high inherent strength, excellent oxidation and corrosion resistance, minimal thermal expansion and low coefficient of friction are essential requirements.
As it can be moulded using near net shape injection moulding techniques, it allows for increased productivity and lower maintenance costs in demanding industrial environments.
High Strength
NBSIC stands up well to mechanical stress and thermal cycling stress, making it a viable material option as a replacement for metal components in components subjected to mechanical strain. Furthermore, its ability to withstand thermal shock increases component life significantly.
NBSIC is manufactured using an electric furnace to heat mixtures of silicon carbide and mineral additive at specific temperatures and pressures that are maintained throughout its cycle of sintering.
Cast NB SiC can easily be moulded into complex shapes and reproduced exactly, making it an excellent alternative to metal castings. Weld pins and control pins used in resistance welding also benefit from its wear and corrosion resistant properties that extend their lifespan; its excellent abrasion/wear resistance enhances mining equipment operation life while decreasing maintenance costs; furthermore cast NB SiC offers superior oxidation resistance during chemical processes like handling molten aluminum.
High Toughness
Nitride-bonded silicon carbide ceramics have been discovered to be much stronger than their RSC counterparts, boasting superior fracture toughness and thermal shock resistance.
This invention describes a method for producing a refractory by intimately mixing silica and silicon carbide together, molding into desired mass or shape and firing in non-oxidizing nitrogen atmosphere at temperatures and for sufficient period to convert all of the silica to silicon nitride. Oxynitriding occurs at grain boundaries of SiC particles to strengthen bonds more strongly between grains of SiC particles during this process.
Reaction-bonded silicon carbide features high bending strength and elastic modulus that remains unchanged after multiple thermal shock cycles, making it suitable for aluminium melting furnace linings, waste incineration plant liners and kiln furniture applications. Furthermore, reaction bonded silicon carbide serves as an abrasion resistant cyclone liner in coal processing plants as well as corrosion-resistant components in slurry pumps.
High Resistance to Corrosion
NBSiC boasts excellent chemical stability, resistance to creep and oxidation and extreme toughness and durability, ranking among engineering materials with one of the highest load-carrying capacities and low thermal expansion.
Nitride-bonded silicon carbide (NBSiC) is a ceramic composite material created through nitridation – the process of bonding silicon carbide grains together through nitrogen gas to form dense and highly mechanically strong ceramic material that can be formed into intricate forms.
NBSiC stands out in an abrasion test by showing exceptional wear resistance in light soils containing loose sand grains, outperforming both XAR 600 steel and F-61 padding weld by more than twofold in terms of resistance to wear. Furthermore, in heavier soils NBSiC outdid even these materials by showing three to nine times less intensive wear; this translated to longer component lifespans with lower maintenance costs overall.
High Thermal Stability
Nitride-bonded silicon carbide is a highly stable engineering material capable of withstanding temperatures far beyond those found in oxide-based engineering materials, boasting superior load-carrying capacities at elevated temperatures as well as creep resistance. As such, this versatile material has many industrial uses ranging from aluminium melting pot linings, blast furnace linings and kiln furniture.
Nitride ceramic phases can be adjusted through different heat treatment processes to meet specific application needs, creating materials with enhanced chemical and mechanical properties for production of refractory shapes with superior chemical and mechanical properties.
NBSIC can also be fabricated into intricate and precise shapes, making it suitable for use in a wide variety of applications such as high-temperature furnaces, chemical processing equipment and even crucibles for melting metals. Due to its durability it has increased lifespan while decreasing replacement costs significantly; furthermore its excellent thermal conductivity boosts efficiency, directly impacting operational costs across many industrial applications.