Sintered silicon carbide (SSiC) is an extremely hard and dense material with great wear resistance, corrosion protection, and resistance to oxidation. Produced using advanced production techniques known as sintering.
Reaction-bonded silicon carbide (RBSiC), formed by infiltrating porous SiC preforms with liquid silicon and reacting it with carbon, must be produced via infiltration with liquid silicon before reaction at high temperatures and pressures to create RBSiC, while hot pressing and sintering produce SSiC. Both processes require high temperatures and pressures.
High Temperature Resistance
Sintered silicon carbide’s superior high temperature resistance enables it to withstand harsh environments like chemical corrosion and abrasion, making it the ideal material choice for applications across aerospace, oil & gas, paper manufacturing and other industries.
Graphite-loaded sintered silicon carbide material offers improved lubricity and reduced friction, making it suitable for pump seals used for oil and gas processing – helping prevent leakage while guaranteeing fluid containment – as well as valve seals to maintain tight closure and control fluid flow. It is most frequently found used in pump seals designed to stop leakage while guaranteeing fluid containment, such as those found on oil- and gas-processing pumps, while valve seals make use of it to maintain tight closure and control flow of fluid flow between components of the assembly – thus making this material perfect for seals used by oil-gas processing pumps used by using valve seals made out of graphite-loaded sintered silicon carbide which improve lubricity while reducing friction; commonly seen used to improve lubricity when used between components to increase fluid containment while ensuring containment is ensured and fluid containment. Commonly seen used in oil/gas processing pump seals while pump seals utilize valve seals utilize them to keep leakage at minimum while controlling fluid containment while maintain tight closure to control fluid flow control valve seals are commonly employed utilised.
Morgan’s premium mechanical silicon carbide, Hexoloy SE, is an innovative pressure-less form of silicon carbide that offers the same outstanding properties as sintered. Hexoloy SE features higher density and stronger structure compared to reaction bonded silicon carbide making it an excellent option for high temperature work or hard-faced seal applications.
Corrosion Resistance
Silicon carbide can withstand harsh environments, from chemicals such as chlorine to temperatures as high as 2552degF. As such, silicon carbide makes an excellent material choice for applications including sliding rings, bearings and pump seals in chemical engineering, shipbuilding and petrochemical industries.
Sintered silicon carbide (SSiC) and reaction bonded silicon carbide (RBSiC) are highly resistant to corrosion. Both types are created by pressing and sintering silica powder with non-oxide sintering aids; with SSiC proving superior in strength, hardness and thermal conductivity but costlier to manufacture than its RBSiC counterpart.
RBSiC is produced by injecting liquid silicon into a porous carbon or graphite preform, creating lower production costs but producing RBSiC with a coarser grain structure. Both types of SiC materials have differing corrosion resistances due to various factors including impurities, surface area, oxide layer structures, porosity and reaction history which ultimately determine their predominant corrosion kinetics and rates observed over time.
High Modulus of Rupture
Sintered silicon carbide offers exceptional flexural strength, making it the go-to material for aerospace/defense components such as nozzles, valves and pumps. Furthermore, its corrosion, oxidation and chemical attack resistance make this material extremely reliable.
Thermal stability makes borosilicate glass an ideal material for demanding environments like ceramic sintering and metal smelting, thanks to its excellent thermal conductivity, shortening heating times while saving energy costs and cutting production times. Ceramic sintering and metal smelting applications both benefit from its use.
Durability makes carbon fiber an excellent choice for manufacturing industries, and it can reduce wear-and-tear on tools such as cutters, grinding wheels, discs and disc drives by helping reduce wear-and-tear on tools like cutters, grinding wheels and discs. Furthermore, its unique corrosion resistance and self-lubricating properties are particularly useful in automotive braking systems and engine components where extreme temperature fluctuations and conditions exist. Carbon fibre’s excellent fatigue and crack resistance means it can withstand vibration, impact shock stress as well as vibration impact shock stress – while its high modulus of rupture (MOR) also adds strength; graphite addition can further strengthen this material’s fatigue resistance by further increasing MOR; further strengthening its strength by further increasing MOR.
High Strength
Sintered silicon carbide stands out as one of the hardest and lightest ceramic materials, offering great strength, corrosion and wear resistance, low thermal expansion rates and a Young’s modulus of over 400 GPa – with outstanding thermal stability for handling significant temperature variations.
Reaction bonded silicon carbide (RBSiC) is produced by injecting liquid silicon into carbon or graphite preforms, creating lower hardness and strength than its solid silicon equivalent while still being more cost effective and offering excellent corrosion resistance.
Morgan’s RB-100 silicon carbide offers one of the highest levels of abrasion and erosion resistance among commercial grade silicon carbides, making it an excellent material choice for mechanical seals used in chemical industry machinery. Furthermore, its impact resistance makes it suitable for counterface sealing applications in hardface pair sealing applications; furthermore its graphite content promotes better lubricity as well as helping reduce thermal shock damage to mating faces, ultimately increasing seal reliability.
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