Silicon carbide is one of the lightest, strongest and hardest industrial ceramic materials available today. It remains stable at high temperatures while having an incredible Young’s modulus of over 400 GPa; in addition, its material makes for excellent acid and corrosion resistance.
Black sic is an excellent solution for grinding hard non-ferrous metals, ceramics and stone. Additionally, wet sanding belts equipped with black sic are utilized to polish surfaces, deburr edges and remove rust from metals.
Silicon carbide, or SiC, ceramic materials possess an unmatched combination of physical-chemical characteristics that make them suitable for an array of applications. These include resistance to corrosion and oxidation, low thermal expansion rates, excellent electrical insulation qualities, wide bandgap characteristics and strong mechanical strength.
Silicon Carbide (SC) is an inorganic compound created when silicon and carbon combine at high temperatures to form a stable chemical bond, providing it with a wide operating temperature range and making it suitable for multiple industrial uses like glass manufacturing, ceramic production, metal fabrication and papermaking.
Pressureless sintered silicon carbide is nearly universally resistant to corrosion, providing exceptional protection from acids such as hydrochloric, sulfuric, hydrobromic and hydrofluoric acids; bases (such as amines potash and caustic soda); solvents; as well as solvents oxidizing media such as nitric acid. Its corrosion resistance offers major advantages over competing materials like alumina or tungsten carbide.
Sintered silicon carbide offers superior corrosion resistance, making it the ideal material to use as protective tubes in oxygen atmosphere furnaces with molten non-ferrous metals such as aluminum. Furthermore, this material is resistant to slag attack and oxidation as well as flame impingement – further contributing to its versatility as a protective material.
Sintered silicon carbide is an ideal material choice for applications requiring resistance to wear and thermal shock, such as seals for automobile water pumps. Sintered silicon carbide’s excellent wear resistance and corrosion resistance provide long service lives under such harsh conditions.
Sintered silicon carbide stands out for its ability to resist high electric fields. While silicon has a breakdown voltage of approximately 600V, silicon carbide substrate materials have the capacity to withstand voltages 5-10 times greater.
Sintered silicon carbide’s exceptional thermal shock and erosion resistance makes it suitable for many demanding applications, including handling HF acid solutions, rare earth processing, slurry flashing and HF acid handling. Furthermore, its chemical compatibility makes it an attractive alternative to both tungsten carbide and alumina in applications involving molten salts or acidic solutions.
High Temperature Resistance
Silicon carbide is one of the lightest, hardest and strongest industrial ceramic materials available. It is stable at temperatures up to 1400 degC with a Young’s modulus exceeding 400 GPa providing good dimensional stability. Furthermore, silicon carbide resists corrosion and erosion from all acids (strong hydrofluoric acid solutions, mixed hydrofluoric acids, nitric acid solutions, sulfuric acid solutions and phosphoric acids).
Silicon carbide is currently the only material capable of outperforming traditional ceramics and ductile metals in harsh metallurgy and power industry environments such as coal gasification, cracking furnaces and cement kilns. Hexoloy alpha is produced through a proprietary sintering process to produce an extremely pure fine grain material with extremely low porosity allowing it to withstand extreme high temperature and pressure conditions for use in applications requiring extreme high temperature resistance.
Pumps must operate under various arduous conditions and require high-performance seal faces to achieve long life with minimum friction against various materials. Sintered Silicon Carbide (ZPC) has proven itself as an exceptional seal face material in chemical processing, refining, papermaking and mining pumps – it excels with regards to corrosion and abrasion resistance even under adverse conditions – making it the ideal solution where other refractory materials such as Tungsten Carbide fail to deliver satisfactory performance.
Reaction bonded silicon carbide (RBSC) offers excellent wear resistance performance at elevated temperatures and outstanding erosion and abrasion resistance, boasting five to ten times harder surface than alumina with an Moh’s hardness of 9.09.2. RBSC makes for ideal applications such as valve trims, sandblasting injectors and nozzles due to these qualities.
Silicon carbide boasts a much higher electric breakdown voltage than silicon and is more resistant to high levels of current density, making it suitable for use as the substrate material in electronic devices such as transistors, diodes and capacitors. Due to these characteristics it makes manufacturing thinner devices with lower costs and greater reliability possible compared to ceramics or ductile metals; additionally it makes production of same device easier since less control circuitry needs to be implemented for each one produced.
Silicon is widely associated with the semiconductor industry, but silicon carbide (SiC) has rapidly made strides into other fields as an increasingly preferred material choice due to its superior properties compared to its sibling material, silicon.
SiC is a ceramic material created by mixing extremely fine silicon carbide powder with non-oxide sintering additives to form a highly dense material that can be formed using dry or liquid pressing, isostatic press or injection molding technologies. These processes allow complex shapes to be produced with great accuracy and tight tolerances – ideal for creating products such as sandblasting nozzles, automotive water pump seals or extrusion dies with great ease.
Sintered silicon carbide differs from its counterpart tungsten carbide in that it is both more lightweight and stronger, making it suitable for applications where heavyweight is an issue, such as aerospace engineering. Furthermore, sintered silicon carbide requires significantly less energy to produce similar results compared to its tungsten counterpart.
SiC is known for its strength and corrosion resistance. But in addition to that, its excellent thermal conductivity stems from its crystalline structure which allows it to rapidly transfer heat between hot surfaces and cooler areas – something which makes it particularly advantageous in industrial furnaces where hot metals must be handled, helping prevent damage to surrounding equipment.
One such case of this can be seen with ceramic lining for a coal kiln, made of SiC, that protects an underlying Mullite or Alumina thermocouple tube from direct flame impingement, thus increasing its lifespan while decreasing maintenance or replacement times.
SiC is becoming an attractive option in the electric vehicle (EV) industry as an IGBT replacement, taking advantage of its lower voltage requirements to meet load design specifications with reduced power loss and enhanced efficiencies in final products.
High Wear Resistance
silicon carbide-lined pipes outshone traditional steel, cast stone and alumina ceramic composite pipes when it came to wear resistance, with their wear resistance three to seven times greater compared to those materials. Abrasion resistance was three times higher than with ceramic materials such as alumina (corundum) ceramics while impact resistance was up to ten times more than high alloy wear-resistant cast steel pipes. They offer excellent thermal stability with low heat conduction; their service life exceeded 60,000 hours; they were even insensitive to angle of attack so could even be used mining bucket liners or equipment linings.
Silicon carbide boasts exceptional corrosion resistance. It stands up well to various chemicals, particularly acids and alkalis, and is insoluble in both water and alcohol. Furthermore, its hardness, strength, durability, abrasion resistance and exceptional machinability capabilities make it the perfect material choice for demanding applications such as aerospace.
Silicon carbide is a polytype crystal with a hexagonal structure composed of silicon and carbon atoms arranged in two primary coordination tetrahedra with four silicon and four carbon atoms bonded between their faces, creating highly crystalline grains bonded tightly together by their strong bonding forces. Silicon carbide’s hard surface and strength makes it an excellent abrasive material that’s commonly used for sandblasting or grinding tools.
Reaction bonded silicon carbide (RBSIC) is an industrial material for use in creating wear-resistant liners and nozzles, manufactured through kneading, molding, drying and high temperature sintering of SiC powder mixed with binder materials. It possesses better wear resistance than alumina as well as chemical and thermal stability making it popularly used across metallurgy and power industries such as blast furnace bottom and melting furnace bodies (zinc, copper and aluminum), distiller in melt towers electrolytic tank side wall Crucibles all kinds of kiln roof boards in silicate industry along with flame proof plate kilns cement rotary kilns and waste treatment incinerators applications.
Pressureless sintered silicon carbide kiln furniture offers many advantages over standard wood furniture, including high abrasion resistance, strength and toughness, low porosity and temperature resistance – qualities which make it the ideal material for ceramic glaze baking sintering directly in a kiln. Furthermore, it helps decrease fuel consumption as well as improving furnace capacity, product quality and production cycle time – thus making production simpler and faster overall.