Magnesium material and use of the same

Abstract

An Mg material consisting of a matrix with a C long-fiber reinforcement, wherein to improve the strength of the material transversely with respect to the fiber direction the C long fibers are provided with a thin layer, wherein at least one element of the layer material of the thin layer forms a homogeneous chemical reaction layer with the respective C long fiber and wherein the thin layer forms a diffusion barrier so that the local formation of relatively coarse reaction products of alloying elements from the matrix with the C long fibers, which act as crack initiators, is prevented. Uses of the Mg material according to the invention are also described.

1 . An Mg material comprising a matrix with a C long-fiber reinforcement characterised in that the C long fibers are provided with a thin layer, wherein at least one element of the layer material forms a homogeneous chemical reaction layer with the respective C long fiber, and the thin layer forms a diffusion barrier so that the local formation of relatively coarse reaction products of alloying elements from the matrix with the C long fibers is prevented.  
   
   
       2 . An Mg material as set forth in  claim 1  characterised in that the layer material of the thin layer is formed by carbide-forming agents.  
   
   
       3 . An Mg material as set forth in  claim 2  characterised in that the layer material of the thin layer is formed by Al, Cr, Ti, Ta, Nb, Hf and Zr.  
   
   
       4 . An Mg material as set forth in  claim 2  characterised in that the layer material of the thin layer is formed by alloys on an Ni basis, which contain carbide-forming agents.  
   
   
       5 . An Mg material as set forth in one of claims  1  through  4  characterised in that the thin layer is produced by a PVD or CVD process.  
   
   
       6 . An Mg material as set forth in  claim 5  characterised in that the thin layer is applied to the C long fibers by sputtering.  
   
   
       7 . An Mg material as set forth in  claim 5  characterised in that the thin layer is applied to the C long fibers galvanically, wet-chemically or by a currentlessly electrochemical process.  
   
   
       8 . An Mg material as set forth in one of claims  1  through  7  characterised in that the thin layer is of a thickness in the range of between some nm and some μm.  
   
   
       9 . Use of an Mg material as set forth in one of claims  1  through  8  for the production of pistons of internal combustion engines.  
   
   
       10 . Use of an Mg material as set forth in one of claims  1  through  8  for the production of connecting rods of internal combustion engines.  
   
   
       11 . Use of an Mg material as set forth in one of claims  1  through  8  for the production of propulsion bases for sub-caliber projectiles.