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Tyranno Fiber® continuous ceramic

High-performance, durable silicon carbide (SiC) fibers for extreme environments

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.

Applications

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:

Aircraft engines
Nuclear reactors
Fusion reactors
Automotive industries

We offer best-in-class performance from advanced materials.

Product line

Tyranno Fiber® mainly uses two types of silicon carbide (SiC) fibers: (1) standard (ZMI grade) and (2) high temperature (SA4 grade).
PropertyStandard TypeHigh Temp Type
Grade  ZMISA4
Fiber diameter(μm) 1110
Number of filaments(fil./yarn) 800800
Tex(g/1,000m) 200175
Tensile strength(GPa) 3.43.8
Elastic modulus(GPa) 210390
Elongation at break(%) 1.50.9
Density(g/cm3) 2.63.1
Contents(wt.%)Si5667
  C3431
  O9<1
  Metal1<2
Coefficient of thermal expansion(10-6/K) 4.0 (RT-1,000ºC)4.5 (RT-1,000ºC)
Thermal conductivity(W/m K) 2.545

The values represent the product characteristics, but are not guaranteed.

What are Ceramic Matrix Composites?

Ceramic Matrix Composites (CMCs) are typically classified into four types:

  • C/SiC Composites: composed of carbon fiber as reinforcement in a silicon carbide (SiC) matrix. They exhibit high strength, but they suffer from short lifetimes.
  • C/C Composites: composed of carbon fiber as reinforcement in a carbon matrix. These also exhibit high strength, but with short lifetimes.
  • Ox/Ox Composites: composed of oxide ceramic fiber reinforcement in an oxide ceramic matrix. These have good oxidation resistance, but lower strength and lower resistance to creep (deformation under prolonged stress). Ox/Ox composites are limited to less demanding applications for that reason.
  • SiC/SiC Composites: composed of silicon carbide fiber reinforcement and a silicon carbide matrix. These composites maintain their strength even at elevated temperatures and they exhibit exceptional resistance to creep, corrosion and neutron radiation exposure, enhancing their durability.

Why use SiC/SiC composites?

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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