silicon carbide foam is a low-density permeable material with many applications. Common examples include insulation, pollution absorption and filtering of molten metal alloys.our SiC foam offers the exceptional hardness, high temperature durability and performance characteristics of solid silicon carbide in a lightweight foam structure – properties highly sought-after by industries such as aerospace, defense and semiconductor manufacturing.
Foamed silicon carbide offers an exceptional combination of properties for use in applications requiring resistance to high temperatures, such as filtration, heat shielding and heat exchangers.
Foamed silicon carbide is highly corrosion resistant. Because it can be heated with electricity, this material makes for ideal use in construction departments and semiconductor fields to heat corrosive liquids. Foamed silicon carbide has also proven useful in chemical industrial furnaces to strengthen combustion processes while decreasing power consumption.
Researchers from Cambridge recently conducted an in-depth investigation of the mechanical properties of foamed silicon carbide. Utilizing computational analysis that included both damage and fracture mechanisms, their result revealed that its microstructure is composed of thin rods which tend to fail first when exposed to regions with high Mises stress concentration and damage parameter values.
Manufacturing ceramic involves impregnating polyurethane foam with a suspension of silicon powder suspended in resin with low viscosity so the particles can penetrate to the core of the foam. After being exposed to high temperature for carbonisation, carbonised foam was crushed and pulverised into silicon carbide granules before sieving and sizing to meet specific specifications for production, eventually yielding silicon carbide foam with high strength-to-weight ratio.
silicon carbide foam is combination of strength and porosity/high surface area. This makes it highly resistant to corrosion, oxidation and other environmental hazards while its combination of mechanical strength, pore structure and permeability makes it an excellent replacement for silica, alumina or activated carbon in catalytic reactions.
Foamed silicon carbide’s low thermal expansion enables it to serve as an excellent thermal insulator, and its high permeability and pressure drop properties make it a suitable material for heat transfer purposes. Used extensively across chemical industrial furnaces, high temperature fuel (rocket) nozzles, shielding applications and gas diffusers – foamed silicon carbide offers numerous potential uses!
As part of a dynamic compression test to assess damage resistance of foamed ceramics, silicon carbide was subjected to dynamic compression testing at different velocities with different anvil pressure settings; this allowed us to determine its ability to resist damage and fragmentation over other ceramics such as alumina and zirconia. Results demonstrated superior damage resistance for silicon carbide over other ceramics like alumina and zirconia.
silicon carbide foam are special porous ceramics characterized by three-dimensional network structures, very high porosity, energy absorption and pressure resistance as well as excellent thermal resistant and chemical resistant functions that find widespread application across industries including metallurgy, chemical industry, energy electronics transport machinery national defense and environmental protection etc.
Silicon carbide foam offers excellent chemical purity and corrosion resistance, strong mechanical strength and a low coefficient of thermal expansion. It can withstand temperatures up to 1600oC without strength loss, and has excellent thermal shock resistance properties. Due to its high conductivity at higher temperatures it has long been used as high-temperature insulators – its electrical properties making resistors and varistors a popular choice as well.
Methods to make it:
silicon carbide foam has low density and high porosity, offering wide surface area suitable for many applications such as filtration and adsorption. Furthermore, its thermal insulating qualities and corrosion-resistance make it useful in high temperature insulation applications, abrasion resistance testing and as substrate material for catalysts requiring large internal surface areas. we offers standard 24 pores per centimeter (ppi), 0.29 g/cm-3 density bulk density with 91% porosity; other pore sizes densities or dimensions may be available upon request.
Manufacturing Process For Producing SiC Ceramic Foam
silicon carbide foam differs significantly from solid SiC in that its atomic structure consists of tightly packed carbon and silicon atoms covalently bonded together through two primary coordination tetrahedra – four carbon atoms connected by four carbon bonds to a central silicon atom – which form two primary coordination tetrahedra. This arrangement produces an extremely hard yet tough material with relatively high specific heat values.