Reaction Bonded Silicon Carbide Pipe
Reaction bonded silicon carbide (RB SiC) ceramics offer exceptional chemical and thermal resistance in various shapes and sizes, making them suitable for pump mechanical seals, bearings and large wear components used in mining industries.
Manufacturing process of carbon or graphite-based reaction bonded ceramics involves packing porous carbon or graphite material into plastic shapes and infiltrating it with liquid or gaseous silicon infiltrant, producing fully dense reaction bonded ceramics with increased bending strength, melt point, and elastic modulus properties.
Corrosion Resistance
Silicon carbide stands up well against corrosion thanks to its superior chemical stability and thermal shock resistance, and durability as a ceramic material that allows it to withstand a range of temperatures without degrading over time – this makes it especially useful in environments that may expose it regularly to potentially damaging environments.
Reaction bonded silicon carbide (RB SiC) stands up well against corrosion thanks to its low coefficient of expansion and hardness, high abrasion resistance, impervious wetting by nonferrous metals, thermal stress resistance and high melting point. It’s no wonder why reaction bonded silicon carbide (RB SiC) remains popular as an refractory ceramic.
RB SiC is created by infiltrating porous carbon or graphite materials into your product with molten silicon, which reacts with the carbon to produce SiC. It can then be produced into different shapes and sizes that can be used in pumps, mechanical seals, bearings, flow control chokes or large wear components for mining industries or other uses.
RB SiC stands out from sintered SiC as having superior bending properties, making it perfect for building sanitary ceramic kilns, grinding wheel kilns and Russian fuel furnace tubes without incurring setup fees associated with traditional hard tooling processes. Due to this material’s flexibility it can easily be formed into intricate designs without incurring setup fees for traditional tooling processes.
Thermal Shock Resistance
Silicon carbide (sic) is an inert ceramic material with very high strength and excellent wear- and corrosion-resistance, making it the ideal material for industrial components like seal faces, bearings, nozzles and pump parts. Furthermore, reaction bonded sic provides an economical alternative to sintered sic and can be used where higher hardness but thermal stability are required.
Reaction bonded silicon carbide (RBSC) is formed by infiltrating porous carbon compacts with liquid silicon. The degree to which preforms are graphitized, their size and their reaction rate all play an integral part in how densely bound reaction bonded sic is produced, ultimately impacting mechanical properties as well as thermal shock performance.
Reaction bonded silicon carbide offers high bending strength and thermal shock tolerance under certain circumstances, making it suitable for many applications including power plants, steel fabrication and semiconductor manufacturing. Reactivity-bonded silicon carbide also excels at withstanding extreme temperatures and pressures found in desulfurization/denitrification nozzle production and mining industries alike, offering excellent abrasion resistant lining solutions.
Thermal Conductivity
Silicon carbide ceramics feature excellent thermal conductivity and low thermal expansion coefficient, along with being highly corrosion resistant against acids. Their excellent wear resistance also makes them suitable for applications involving high erosion or wear wear such as spray nozzles and cyclone components, with carbon or glass fiber reinforced plastic coatings being added for increased impact resistance and adhesion strength.
Reaction Bonded SiC (RBSiC) is produced by infiltrating porous carbon or graphite preforms with liquid or vapor silicon, then injecting liquid silicon as either melt or vapour to react with carbon to form b-SiC while the remaining pores are filled by free silicon from its melting point. Once sintered, this two-phase material becomes solid refractory grade material with desired properties.
Silicon carbide production using this technique is one of the more cost-effective techniques available, although its coarse grain texture, lower hardness and use temperature are lower compared to direct sintered or CVD SiC production techniques. Still, this material offers superior wear resistance and corrosion resistant performance at more reasonable costs.
RBSC can be utilized in a wide variety of industrial settings, including chemical, steel and electric power industries. Furthermore, it’s a popular choice for lining industrial equipment like pumps, mechanical seals, flow control chokes and bearings as well as being an essential part of desulfurization and denitrification nozzles that reduce pollution levels in power plants.
Wear Resistance
Reaction bonded silicon carbide (RB SiC) is an extremely durable ceramic material with excellent thermal expansion/contraction resistance, chemical attack resistance, and is widely utilized as components in power desulfurization and denitrification kiln components. Produced by infiltrating molten silicon into porous carbon compacts until solid graphitized structures form, RB SiC is capable of being formed into various shapes and sizes making it suitable for large wear parts as well as other uses.
Nitride-bonded silicon carbide offers significantly superior wear resistance than steel types typically employed in metal-mineral tribological combinations. Its highest level is determined in light soil containing loose abrasive grains of sand; this figure is approximately 1.2 times greater than XAR 600 steel wear resistance, 1.5 times greater than F-61 padding weld, and over 8 times higher than boron steel B27 under similar soil conditions.
Nitride-bonded silicon performs better in most soil conditions with increasing grain size distribution due to finer particles being more easily eroded, as softer materials tend to wear away more rapidly than harder particles. Meanwhile, its wear rate remains significantly lower than steel types commonly used for working soil applications; making nitride-bonded silicon an excellent alternative solution in these applications.
