C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 37/00 (2006.01) C04B 35/573 (2006.01) C04B 35/80 (2006.01) F16C 33/04 (2006.01) F16D 65/12 (2006.01) F16D 69/02 (2006.01)
Patent
CA 2384538
The invention relates to a friction or slip body which consists of at least two composite materials, reinforced with fibre bundles and containing a ceramic matrix. A first composite material acts as a friction layer, forming the exterior of the slip body and a second composite material forms a support body which is in surface contact with the friction layer. The length of the fibre bundles of the friction layer is significantly shorter than the length of the fibre bundles of the support body. The bundles of fibres of the friction layer have a defined orientation that is perpendicular to the surface. The surface of the friction layer essentially has only small areas of a maximum 1.2 mm diameter of exposed carbon and the total proportion of exposed carbon on the surface is at maximum 35 %. The surface has a structure of extremely fine fissures and the friction layer has practically no tension close to the surface.
L'invention concerne un corps de frottement ou de glissement constitué d'au moins deux matériaux composites à matrice céramique renforcés par des faisceaux de fibres. Un premier matériau composite forme, en tant que couche de frottement, la face externe du corps de glissement et un deuxième matériau composite forme un corps support relié en nappe à la couche de frottement. Les longueurs des faisceaux de fibres de la couche de frottement sont sensiblement inférieures aux longueurs des faisceaux de fibres du corps support. Les faisceaux de fibres de la couche de frottement présentent une orientation nette perpendiculaire à la surface. La surface de la couche de frottement présente pratiquement seulement de petites zones d'1,2 mm de diamètre au maximum de carbone libre et la proportion totale de la surface de carbone libre sur la surface est de 35 % au maximum. La surface présente une structure de fissure tout au plus fine et la couche de frottement ne présente pratiquement pas de tensions proches de la surface.
Gruber Udo
Heine Michael
Kienzle Andreas
Fetherstonhaugh & Co.
Sgl Carbon Ag
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