Silicon carbide is one of the hardest and most advanced ceramic materials on the market, boasting high temperature strength, chemical resistance, low thermal expansion rates, and wide application across industries like chemical processing, mechanical design, oil & gas, aerospace and national defense.
Silicon carbide boasts an outstanding combination of properties that have made it the material of choice in bone implants. Hexoloy (r) ceramic material is biocompatible, and in-vivo studies demonstrate significant bone formation.
Hårdhet
Silicon Carbide (SiC) is an inorganic compound composed of silicon and carbon that occurs naturally only in trace amounts in meteorites as the mineral moissanite, while it has been synthetically produced since 1893 for use as an abrasive. Silicon carbide’s ceramic properties make it highly durable; it can withstand very high temperatures and thermal shocks with ease while offering great oxidation resistance and wear resistance as well as boasting an exceptionally high modulus of elasticity without porosity issues.
SiC is one of the hardest and strongest fine ceramic materials. Due to its superior hardness, corrosion resistance, chemical stability and electrical semi-conductivity properties it makes an ideal material choice for numerous applications. Furthermore, SiC’s low coefficient of thermal expansion enables it to withstand high temperature ranges while its strong covalent bonding makes it resistant to thermal expansion or shrinkage, making it suitable for high performance electronic equipment.
Mohs scale of hardness ranks it as one of the ten hardest materials, second only to diamond. It offers excellent abrasion resistance for applications such as shot blast nozzles and cyclone components, making it suitable for ballistic armour due to its excellent flexural strength and fracture toughness properties. These characteristics result from its chemical inertness combined with hardness properties as well as physical wear resistance at high temperatures as well as chemical attacks on its surface.
Motståndskraft mot korrosion
Silicon carbide possesses superior chemical inertness, making it resistant to environments that could otherwise lead to corrosion in less resilient materials. As such, silicon carbide makes an excellent choice for applications such as petrochemical processing and semiconductor device production where exposure to harsh conditions such as harsh chemicals, acidic solvents, high temperatures and extreme conditions may occur.
Silicon carbide ceramics offer outstanding chemical corrosion resistance compared to other industrial ceramics, combined with excellent hardness, temperature stability, low thermal expansion coefficient, and superior mechanical strength – qualities which make it the perfect material for numerous applications.
Formation methods used to produce silicon carbide have an immense effect on its microstructure and therefore performance as a final product. Reaction bonded silicon carbide can be made by infiltrating compacts made up of mixtures of SiC and carbon with liquid silicon, which reacts with initial particles to form more SiC, bonding them. Sintered silicon carbide production involves sintering pure SiC powder using conventional ceramic forming methods.
Dense silicon carbide parts with flexure strengths exceeding 300 MPa and fracture toughness greater than 3.87 MPa m1/2 can be successfully produced through hot pressing or pressureless sintering, maintaining high temperature strength to 1600 degC while offering exceptional high temperature oxidation resistance among carbide ceramics. A thin layer of silicon dioxide protects these dense components against further corrosion resistance, oxidant activity or wear resistance.
Motståndskraft mot höga temperaturer
Silicon carbide is one of the toughest materials suitable for use at high temperatures and shows outstanding resistance to thermal shock. Additionally, it retains its mechanical strength under pressure while showing minimal creep rate – ideal for load bearing applications such as bearings, seal rings and engine components. Furthermore, silicon carbide holds up well in chemically aggressive environments while resisting corrosion and oxidation even at elevated temperatures.
Silicon carbide’s hardness and toughness allow it to be machined to close dimensional tolerances while offering outstanding chemical stability, including highly corrosion resistance against acidic media environments as well as resistance against wear and abrasion – qualities which make it an appealing material choice for demanding situations like 3D printing, ballistic protection and oil/gas/petrochemical processing industries.
IPS Ceramics provides all major types of SiC, an extremely long-wearing and durable material for challenging environments. SiC comes in the form of moissanite as well as sintered powder that can be sintered into solid or semi-finished products – the latter of which is known as sintered silicon carbide (SSiC). Notable attributes of SiC include its exceptional chemical and wear resistance as well as its high modulus of elasticity and low coefficient of expansion; making it the go-to material for high performance kiln furniture as well as bulletproof armor applications as well as semiconductor wafer preparation fixtures.
Motstånd mot termisk chock
Silicon carbide ceramics boast outstanding thermal shock resistance. They can withstand temperature changes up to several thousand degrees Celsius without suffering damage, while still maintaining their hardness. This feature makes silicon carbide ceramics especially ideal for industrial environments where temperatures often fluctuate wildly; additionally, this benefit of silicon carbide makes its use ideal in producing refractory products such as burner nozzles, flue gas desulphurization nozzles, and seals for pipe systems.
Ceramic sand filters constructed of SiC are popular choices in oil and gas production due to their long filter lifespan, resistance to corrosion, acids, high temperatures and various borehole fluids and their insensitivity to abrasion or impact, making it suitable for bearings or mechanical seals.
Silicon carbide ceramic boasts a low thermal expansion coefficient and excellent creep resistance, making it suitable for demanding conditions such as 3D printing, ballistics production, chemical production, energy technology and paper manufacturing.
Even with such impressive properties, there remain concerns over the safety of using silicon carbide ceramic in humans. The vitreous form, consisting of glass-like abrasive particles that can be toxic to people. Human studies that have been conducted may also be confounded by concurrent exposures to tobacco smoke, adsorbed hydrocarbons, or crystalline silica; nonetheless the risk of fibrotic lung disease associated with silicon carbide abrasives in industry requires further study and needs further evaluation.
Swedish 
English