Carrier material for producing workpieces

Abstract

A carrier material to be used as a placeholder for structuring workpieces having at least one vacuity is disclosed, said carrier material comprising a corrodible material, the corrodible material being a mixture or an alloy of magnesium and at least one additional metal component, the standard electrode potential of which is larger than that of magnesium under reaction conditions, wherein the material was compacted by a mechanically stressing method.

1 - 20 . (canceled) 
     
     
         21 . A carrier material to be used as a placeholder for structuring workpieces having at least one vacuity, comprising a corrodible material containing magnesium and at least one additional metal component with a standard electrode potential that is greater than that of magnesium under reaction conditions, wherein the carrier material is compacted by mechanical stressing. 
     
     
         22 . The carrier material of  claim 21 , wherein the corrodible material comprises a mixture or an alloy of magnesium. 
     
     
         23 . The carrier material of  claim 21 , wherein the magnesium and the at least one additional metal component are combined in a volume ratio between about 250:1 to about 1:10. 
     
     
         24 . The carrier material of  claim 21 , wherein the magnesium and the at least one additional metal component are combined in a volume ratio between about 5:1 to about 1:10. 
     
     
         25 . The carrier material of  claim 21 , wherein the mechanical stressing is by thermal spraying, kinetic spraying, or cold gas spraying. 
     
     
         26 . The carrier material of  claim 21 , wherein the carrier material is machinable and/or deformable. 
     
     
         27 . The carrier material of  claim 21 , wherein the carrier material has a porosity of less than about 20% by volume. 
     
     
         28 . The carrier material of  claim 21 , wherein the carrier material has a porosity of less than about 5% by volume. 
     
     
         29 . The carrier material of  claim 21 , wherein the carrier material has a porosity of less than about 1% by volume. 
     
     
         30 . The carrier material of  claim 21 , wherein the carrier material is a powder having particle sizes less than about 0.5 mm. 
     
     
         31 . The carrier material of  claim 21 , wherein the carrier material is a powder having particle sizes less than about 0.25 mm. 
     
     
         32 . The carrier material of  claim 21 , wherein the additional metal component is iron and/or nickel and/or copper. 
     
     
         33 . A method for producing a workpiece having at least one vacuity in a body, wherein, for producing the workpiece, the at least one vacuity is formed of a carrier material that comprises magnesium and at least one additional metal component and is present in a compacted form, wherein the carrier material is removable after completion of the body, without damaging the body, by contacting the carrier material with a corroding medium that dissolves the carrier material, and rinsing away a suspension of the carrier material and the corroding medium. 
     
     
         34 . The method of  claim 33 , wherein the workpiece is produced by thermal spraying, kinetic spraying, or cold gas spraying. 
     
     
         35 . The method of  claim 33 , wherein the workpiece is produced by sintering and pressing. 
     
     
         36 . The method of  claim 33 , wherein the speed of the dissolution is adjusted by tempering the corroding medium. 
     
     
         37 . The method of  claim 33 , wherein the speed of the dissolution is adjusted by selecting the type and amount of ions in the corroding medium. 
     
     
         38 . The method of  claim 33 , wherein an aqueous solution is used for dissolving the carrier material, which contains nitrate, sulphate and/or chloride ions. 
     
     
         39 . The method of  claim 33 , wherein the corroding medium comprises a sodium chloride solution. 
     
     
         40 . Use of a carrier material as defined in  claim 21  for producing a lost mould by application with a compacting method.