Device for producing a composite component formed from carbon fibers coated with pyrolytic carbon

Abstract

The invention relates to a method for producing a composite component and to a composite component, the composite component being formed from a metal-matrix composite material made of carbon fibers and a metal or a metal alloy, a fiber composite being formed from the carbon fibers, a preform being formed from the fiber composite, the carbon fibers of the fiber composite being coated with pyrolytic carbon to form the preform, the preform being at least partially infiltrated with molten metal.

1 . A method for producing a composite component, the composite component being formed from a metal-matrix composite material made of carbon fibers and a metal or a metal alloy, said method comprising:
 forming a fiber composite from carbon fibers;   coating carbon fibers of the fiber composite with pyrolytic carbon to form a preform; and   at least partially infiltrating the preform with molten metal.   
     
     
         2 . The method according to  claim 1 , in which the pyrolytic carbon is vapor-deposited on the carbon fibers. 
     
     
         3 . The method according to  claim 2 , in which the pyrolytic carbon is formed as a deposit produced on the carbon fibers by CVD method or a CVI method. 
     
     
         4 . The method according to  claim 1 , in which the pyrolytic carbon on the carbon fibers is formed by pyrolizing a thin resin or pitch layer on the carbon fibers. 
     
     
         5 . The method according to  claim 4 , in which a thickness of the resin or pitch layer is formed smaller than a thickness of the carbon fibers, 
     
     
         6 . The method according to  claim 4 , in which the resin layer is formed by soaking the fiber composite in as diluted phenolic resin solution. 
     
     
         7 . The method according to  claim 1 , in the coated carbon fibers are provided with another coating made of silicon carbide. 
     
     
         8 . The method according to  claim 1 , in which an at least partially unidirectional orientation of the carbon fibers of the fiber composite is formed. 
     
     
         9 . The method according to  claim 1 , in which the fiber composite is compressed. 
     
     
         10 . The method according to  claim 1 , in which the fiber composite is formed as a spatially oriented support structure of the composite component, said support structure being adjusted to a load case of the composite component. 
     
     
         11 . The method according to  claim 1 , in which a support structure of the composite component is formed by a plurality of preforms. 
     
     
         12 . The method according to  claim 1 , in which the infiltration is performed with aluminum, titanium, magnesium, copper or an alloy of one of these metals. 
     
     
         13 . The method according to  claim 1 , in which the preform is formed with an open pore structure. 
     
     
         14 . The method according to  claim 1 , in which the preform is completely infiltrated with molten metal. 
     
     
         15 . The method according to  claim 1 , in which the preform is arranged in a casting mold. 
     
     
         16 . The method according to  claim 15 , in which the infiltration is performed by means of pressure die casting, squeeze casting or vacuum casting. 
     
     
         17 . The method according to  claim 1 , in which the composite component is formed in such a manner that it has a metal content of more than 50 percent by volume. 
     
     
         18 . The method according to  claim 1 , in which the composite component is formed in such a manner that it has a carbon fiber content of more than 50 percent by volume. 
     
     
         19 . The method according to  claim 1 , in which the composite component is formed in such a manner that the carbon fibers are distributed homogenously within the composite component. 
     
     
         20 . The method according to  claim 1 , in which the composite component is formed in such a manner that the carbon fibers are distributed heterogeneously within the composite component. 
     
     
         21 . A composite component formed from a metal-matrix composite material made of carbon fibers and a metal or a metal alloy, 
       said composite component comprising:
 a preform formed from a fiber composite formed from carbon fibers, the carbon fibers of the fiber composite being coated with pyrolytic carbon, the preform being at least partially infiltrated with molten metal.