Shaped composite material
AssigneePetroceramics S.p.A.
InventorMassimiliano Valle
Life of this patent
Estimating the term…
Abstract
The present invention concerns a shaped composite material and a method for producing it. More specifically, the invention concerns a disc for a disc brake made from ceramic composite materials, usually known as “CMC”, i.e. “Carbon Material Ceramic” or “CCM”, i.e. “Carbon Ceramic Material”. These materials consist of carbon matrices containing carbon fibres usually infiltrated with silicon and a product of reaction between C and Si, silicon carbide (SiC). More specifically, the invention concerns a shaped composite material comprising a inner layer (3; 103) of CCM C/SiC/Si material comprising disorderly short filaments consisting mainly of carbon and respective outer layers (2, 2′; 102, 102′) of C/SiC/Si material and having an orderly fabric structure of mainly carbon fibres.
Claims22
Shaped composite material comprising an inner layer of CCM C/SiC/Si material comprising short and disorderly filaments, essentially consisting of carbon, and respective outer layers of C/SiC/Si material having a fabric structure, wherein the outer layers of C/SiC/Si material have outer friction surfaces, and wherein the shaped composite material has the following characteristics:
- flexural strength XY45° 60-90 MPa
- flexural strength XY90° 120-170 MPa.
Shaped composite material comprising an inner layer of CCM C/SiC/Si material comprising:
- short and disorderly filaments, essentially consisting of carbon, and
- respective outer layers of C/SiC/Si material having a fabric structure,
- wherein the outer layers of C/SiC/Si material have outer friction surfaces,
- wherein the fabric structures of the outer layers each include stacked sheets of fabric, wherein the stacked sheets are entangled with each other, and wherein the fabric structures have a composition by weight that varies within the ranges given below:
- carbon filaments 10-25%
- carbon binder about 10-20%
- silicon about 15-25%
- SiC 30-50%, and
- wherein the shaped composite material has the following characteristics:
- flexural strength XY45° 60-90 MPa
- flexural strength XY90° 120-170 MPa.
Dependencies are inferred from the claim text.