Developed with UBE’s unique technology, Tyranno Fiber is a continuous ceramic fiber composed of silicon, metal (titanium, zirconium, or aluminum), carbon, and oxygen.
Advanced ceramic matrix composites (CMCs) with Tyranno Fiber reinforcement are expected to play an important role in a wide range of high-performance applications in harsh environments. These include aircraft engine, advanced nuclear power plant, fusion reactor, and brake disk applications.
Reinforcing fibers for these applications need high temperature stability, corrosion resistance, high strength, and high reliability in extreme conditions. Tyranno Fiber has excellent properties and is already being used in several applications.
* TYRANNO FIBER is registered trademark in Japan and other countries.
Tyranno Fiber® products are excellent continuous silicon carbide (SIC) fiber tows for composite reinforcement. They offer the opportunity to enhance performance in ceramic, plastic, and metal matrix composites (CMCs, PMCs, MMCs) in various applications, such as:
Property | Standard Type | High Temp Type | ||
Grade | ZMI | SA4 | ||
Fiber diameter | (μm) | 11 | 10 | |
Number of filaments | (fil./yarn) | 800 | 800 | |
Tex | (g/1,000m) | 200 | 175 | |
Tensile strength | (GPa) | 3.4 | 3.8 | |
Elastic modulus | (GPa) | 210 | 390 | |
Elongation at break | (%) | 1.5 | 0.9 | |
Density | (g/cm3) | 2.6 | 3.1 | |
Contents | (wt.%) | Si | 56 | 67 |
C | 34 | 31 | ||
O | 9 | <1 | ||
Metal | 1 | <2 | ||
Coefficient of thermal expansion | (10-6/K) | 4.0 (RT-1,000ºC) | 4.5 (RT-1,000ºC) | |
Thermal conductivity | (W/m K) | 2.5 | 45 |
The values represent the product characteristics, but are not guaranteed.
Ceramic Matrix Composites (CMCs) are typically classified into four types:
Inherently lightweight
SiC/SiC composites are inherently lightweight, at around one-third the density of superalloys, resulting in high specific strength.
Excellent durability
SiC/SiC composites maintain their strength even at elevated temperatures and they exhibit exceptional resistance to creep (deformation under prolonged stress), corrosion, and neutron radiation. This gives them their great durability. Unlike bulk ceramics, SiC/SiC composites are damage-tolerant and notch-insensitive due to their fiber reinforcement.
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