炭化ケイ素繊維

Silicon carbide fiber is a flexible, strong, oxidation resistant and low density ceramic material used in high temperature environments to reinforce composite materials.

Due to its exceptional performance under extreme temperature conditions, carbon nanotubes have garnered wide attention in both aerospace and military weapons and equipment industries. Furthermore, these materials can also be used to strengthen ceramic matrix composites.

High-temperature structural applications

Silicon carbide fibers are an attractive material choice for high-temperature structural applications due to their combination of high specific strength, low thermal expansion and excellent wear resistance. Silicon carbide can be used to reinforce metal matrix composites with superior thermal stability and electrical conductivity.

Silicon carbide fibers also boast excellent oxidation resistance and easy preparation, making them an excellent alternative to boron fiber for many applications. Furthermore, silicon carbide fibers make an ideal candidate for high-speed mechanical applications like aerospace or unmanned aerial vehicle (UAV) structures.

In this study, we developed a new process for creating non-oxidative silicon carbide fibers suitable for high temperature applications using the pyrolysis of polycarbosilane precursor. The fibers produced were evaluated using scanning electron microscopy and X-ray diffraction analysis; irregularly shaped SiC powder particles served as starting materials to make binder jetted woven silicon carbide fiber-reinforced ceramic matrix composites using binder jetting technology; their densification behavior and microstructure were assessed via six polymer infiltration/pyrolysis cycles.

Aerospace & defence

Silicon carbide fibers have long been utilized by aerospace industry professionals due to their exceptional thermal resistance and other properties, making them popular components used in aircraft engines and thermal management systems. Silicon carbide strengthens ceramic matrix composites (CMC) for use within these engines or systems – one-third the density of nickel metal alloy components while also decreasing overall aircraft weight by decreasing overall density.

MEMS (micro-)mechanical devices combine mechanical actuators or sensors with integrated electronic circuitry for greater functionality, including pressure sensors, accelerometers, thermocouples and piezoelectric generators. Silicon carbide fibers can also be woven together into microstructured MEMS for superior mechanical and chemical performance even under extreme temperatures.

North American markets are forecasted to lead the global silicon carbide fiber market in terms of growth, as a result of increasing aerospace and military equipment manufacturing activity there. Rising defence spending and NASA funding is projected to also boost demand for silicon carbide fibers; moreover, their use in electric vehicle power devices has the ability to increase driving distances while simultaneously decreasing battery energy loss and component size, increasing system efficiency.

Energy & power

Silicon carbide fibers are well suited to power-hungry applications, offering high conductivity and strength with low thermal expansion rates. Their combination makes them the ideal material for high voltage electrical components as well as for power transmission and distribution applications.

And their ability to resist oxidation makes them ideal for use in manufacturing ceramic matrix composites – used extensively for building nuclear reactor fuel cladding that can withstand extreme temperatures – so the demand for these fibres will likely grow significantly over time.

Aerospace industries are expected to drive growth in the market for silicon carbide fiber due to growing defence spending and growing commercial aircraft shipments in the United States. Furthermore, increased NASA funding and defence expenditure may boost demand for titanium, aluminum, and ceramic composite products in America due to their ability to perform under high temperature environments.

Industrial

Silicon carbide fiber is widely utilized for producing ceramic matrix composites and as an alternative to nickel-based superalloys in aerospace components production. Furthermore, silicon carbide fiber has become an increasingly popular choice within power generation industries for ceramic claddings and nuclear reactor core structures due to its radiation resistant properties.

High-temperature stability and chemical inertness make alumina an excellent material to reinforce high-temperature composites, as it retains its strength even at higher temperatures. Furthermore, its tensile strength delivers mechanical performance without adding weight – an invaluable feature for weight-sensitive applications like automotive and aviation.

Woven silicon carbide fibers are widely utilized in metal fabrication industries as an insulating material and reinforcement of refractory materials such as silica, alumina, and aluminum nitride. Furthermore, their low oxygen content makes them suitable for gas turbine applications due to higher temperatures they can withstand.