Brake rotors, clutch plates and like parts and methods for...

F - Mech Eng,Light,Heat,Weapons – 16 – D

Patent

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Details

F16D 69/02 (2006.01) C22C 32/00 (2006.01) C23C 30/00 (2006.01) C25D 11/04 (2006.01) F16D 65/12 (2006.01) F16D 69/04 (2006.01)

Patent

CA 2187433

This invention relates to metal and metal matrix composite materials that are useful as, for example, brake rotors, clutch plates and other similar uses which benefit from material properties of the invention. In the case of metal matrix composite materials, clutch plates and brake rotors made according to the invention comprise an interconnected matrix metal embedding at least one filler material. For example, the at least one filler material comprises numerous acceptable filler materials present in a sufficient quantity to provide desired performance. The brake rotors and clutch plates according to the invention further comprise a coating on the surface thereof causing the metal or metal matrix composite body to function as a substrate. The coatings may be applied by various conventional techniques. Desirable results of placing a coating on a metal or metal matrix composite substrate brake rotor or clutch plate include a significant increase in the maximum operating temperature of the brake rotor or clutch plate and or a significant reduction in weight in comparison to conventional materials, etc.

Matériaux métalliques et composites à matrice métallique utilisables, par exemple, comme rotors de frein, plateaux d'embrayage ou analogue, dans lesquels les propriétés des matériaux sont mises à profit. Dans le cas des matériaux composites à matrice métallique, lesdits rotors de frein et lesdits plateaux d'embrayage comportent un métal à matrice interconnectée dans lequel est noyée au moins une matière de charge. A titre d'exemple, la ou les matière(s) de charge comporte(nt) plusieurs matières de charge appropriées présentes en une quantité suffisante pour assurer les performances voulues. Ces rotors de frein ou plateaux d'embrayage comportent également un revêtement superficiel de sorte que le corps métallique ou composite à matrice métallique sert de substrat. On peut appliquer les revêtements selon différentes techniques classiques. Parmi les résultats souhaitables de la formation d'un revêtement sur un rotor de frein ou un plateau d'embrayage à substrat métallique ou composite à matrice métallique, on peut notamment signaler une augmentation sensible de la température maximale de service du rotor de frein ou du plateau d'embrayage, et/ou un allègement sensible par rapport aux matériaux traditionnels.

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