Technology of Across

1. Simplified manufacturing process by our patented PY method

Conventionally, C/C composite used to be expensive and time consuming to manufacture due to its complicated processing method such as CVD (chemical vapor deposition) and CVI (chemical vapor infiltration). We have simplified the manufacturing process by using a new patented method called PY (preformed carbon fiber yarn), resulting in great reduction in time and cost.

Manufacturing process compared:

PY method
Conventional method

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2. Variety of carbon fiber arrangements for different kinds of application.

By controlling the directional arrangement and the length of carbon fiber reinforcement that supports the carbon matrix, we are able to change the characteristics of the C/C composite so that it can be used for different kinds of application.

Some examples:

Directional Arrangement of fiber	Length of fiber	Application	Characteristics
Uni-directional	Long	Rods, Springs Pins	Maximum rigidity
Bi-directional (0/90) Layer	Long	Plates Heat trays	High resistance against heat High resistance against corrosion
Bi-directional (0/90) Woven	Long	Pipes Angles Sheets	Can be made into complex shape
Multi-directional (Random)	Short	Brakes Clutches Bolts/Nuts	For precision processing and high technicality material
Custom/specially designed	Long	Rocket, aircraft material	Available for special application

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3. C/CMC Carbon/Carbon Metal Composite technology

One of the unique characteristics of C/C composite is its porous structure within the carbon matrix. After years of research, we have developed a technology to control the number and size of these pores and put metal into them creating C/CMC (Carbon/Carbon Metal Composite). By putting metal such as silicon, aluminum, bronze, and titanium, we are able to produce composite with unique characteristics.

This technology similar but different than CFRM (Carbon fiber reinforced metal) which do not have a carbon matrix structure. Compared to CFRM, C/CMComposite can be designed to have metallic characteristic along with characteristics of C/C composite such as its rigidity, heat resistance, and lightness. This makes C/CMC composite an excellent material for special application.

We offer variety of C/CMC composites with special characteristics to suit different kinds of application. By controlling the pores of carbon matrix structure, we are able to put in different kinds of metal and create custom composite. 　 After creating C/C composite by carbonizing the carbon fiber reinforcement and carbon matrix together, liquid metal is put in to the pores using special technique.   C/C with metal in the pores = C/CMC Side view

Examples of C/CMC composite and their application we offer:

C/C composite + metal Silicon	When the C/C composite is graphitized, silicon within the carbon matrix turns into SiC cramic by a chemical reaction. We were able to improve resistance against wear and corrosion dramatically while retaining high frictional coefficient with this composite. Used in : Automotive brakes/
C/C composite + bronze	While having benificial characteristics such as rigidity, strength, and high frictional coefficient, by putting in bronze into the carbon matrix, we have created C/C composite with electrical properties as well. As a result, application to areas where electrical properties are important have also become possible. Application : Pantagraph,
C/C composite + aluminum	C/CMC composite with aluminum is light yet strong and elastic making it possible for application to areas where lightness is an important factor. Used in : material for robots, arichitectural material