Stamping tool, casting mold and methods for structuring a surface of a work piece

Abstract

A mold or stamping tool with which a simple, cost-effective stamping or molding in the nanometer range is enabled by a molding or stamping surface layer of the mold or tool being provided with hollow chambers formed by anodic oxidation.

What is claimed is:  
     
         1 . Stamping tool with a structured stamping surface, wherein the stamping surface is formed by an anodically oxidised surface layer or covering layer with open hollow chambers created model-free by the anodic oxidation, wherein the stamping surface is structured at least partially in the nanometer range by the hollow chambers.  
     
     
         2 . Stamping tool according to  claim 1 , wherein the structural width of the stamping surface is 30 to 600 nm.  
     
     
         3 . Stamping tool according to  claim 1 , wherein the hollow chambers have opening areas with an average diameter of 10 to 500 nm  
     
     
         4 . Stamping tool according to  claim 1 , wherein the hollow chambers have opening areas with an average, at least essentially uniform diameter of 15 to 200 nm.  
     
     
         5 . Stamping tool according to  claim 1 , wherein the hollow chambers have a depth, which greater than the average diameter of the hollow chambers.  
     
     
         6 . Stamping tool according to  claim 1 , wherein the hollow chambers are conically shaped.  
     
     
         7 . Stamping tool according to  claim 1 , wherein the hollow chambers vary at least in one of form, depth, and surface density.  
     
     
         8 . Stamping tool according to  claim 1 , wherein the stamping surface comprises both a fine and rough structure.  
     
     
         9 . Stamping tool according to  claim 1 , wherein the stamping surface is curved.  
     
     
         10 . Stamping tool according to  claim 1 , wherein the surface layer or the covering layer with the hollow chambers is formed at least substantially of a material from the group consisting of aluminium oxide, silicon oxide, iron oxide, oxidised steel and titanium oxide.  
     
     
         11 . Mold with a molding face formed of an anodally oxidized surface or covering layer with open hollow chambers created model-free by the anodic oxidation, wherein the molding face has a structure formed at least partially by the hollow chambers which have diameters in a nanometer range.  
     
     
         12 . Mold according to claim I  1 , wherein the structural width of the molding face is essentially 30 to 600 nm.  
     
     
         13 . Mold according to claim I  1 , wherein the hollow chambers have opening areas with an average diameter of 10 to 500 nm.  
     
     
         14 . Mold according to  claim 11 , wherein the hollow chambers have opening areas with an average, at least essentially uniform diameter of 15 to 200 nm.  
     
     
         15 . Mold according to  claim 11 , wherein the hollow chambers have a depth, which greater than the average diameter of the hollow chambers.  
     
     
         16 . Mold according to  claim 11 , wherein the hollow chambers are designed conically.  
     
     
         17 . Mold according to  claim 11 , wherein the hollow chambers vary at least in one of form, depth, and surface density.  
     
     
         18 . Mold according to  claim 11 , wherein the molding face surface comprises both a fine and rough structure.  
     
     
         19 . Mold according to  claim 11 , wherein the surface layer or the covering layer with the hollow chambers is formed at least substantially of a material from the group consisting of aluminium oxide, silicon oxide, iron oxide, oxidised steel and titanium oxide.