Abstract: A system includes a stack module box, within which is accommodated a fuel cell stack and which stack module box has at least one fuel cell, the fuel cell being in connection with a plurality of media guides leading to the stack module box and from which media can be delivered to the stack module box or received from the stack module box, wherein at least two of the media guides have electrically conductive regions for discharge of current from the fuel cell stack, and/or the wall of the stack module box is electrically conductive in the regions laying opposite to the media guides, and wherein connection lines are led away from the fuel cell stack to the electrically conductive regions and away therefrom. A fuel cell device and a fuel cell vehicle including such a stack module box are also provided.

Abstract: A fuel cell stack comprises at least one fuel cell which is accommodated in a stack module box, a plurality of media channels, having media guides which are arranged on the outside of the stack module box and are in flow connection with the media channels, and a tensioning system which is guided around the stack module box and the tensioning device of which is guided around the media guides, which are designed with a spring function. A related fuel cell device and a fuel cell vehicle are also provided.

Abstract: The invention relates to a method for producing metal matrix composite materials, including at least one proportion of magnesium or one magnesium alloy and involving at least one production step in which a thixomolding ensues. According to the invention, an Mg2Si phase having a volume fraction of at least 2% is incorporated in a metal matrix preferably comprised of magnesium or of a magnesium alloy. The inventive method uses the thixomolding method for the in-situ production of a metallic composite material and is advantageous in that a broad range of adjustable volume fractions of the Mg2Si phase in the composite material results whereby enabling the properties of the composite material to be individually modified. The inventive metal matrix composite material is particularly suited for producing thermally stressed parts of motor vehicles such as pistons or the like.

Abstract: The invention relates to a method for producing metal matrix composite materials, including at least one proportion of magnesium or one magnesium alloy and involving at least one production step in which a thixomolding ensues. According to the invention, an Mg2Si phase having a volume fraction of at least 2% is incorporated in a metal matrix preferably comprised of magnesium or of a magnesium alloy. The inventive method uses the thixomolding method for the in-situ production of a metallic composite material and is advantageous in that a broad range of adjustable volume fractions of the Mg2Si phase in the composite material results whereby enabling the properties of the composite material to be individually modified. The inventive metal matrix composite material is particularly suited for producing thermally stressed parts of motor vehicles such as pistons or the like.