Liquid, its use for the preparation of powder mixtures on the basis of iron or stainless steel as well as a method for the preparation of powder mixtures on the basis of iron or stainless steel

Abstract

A liquid for the preparation of powder mixtures on the basis of iron or stainless steel, comprising water, an inhibitor, and a stabilizer, and a method of forming the same.

1 . A liquid for the preparation of powder mixtures on the basis of iron or stainless steel, containing a) water, 
 b) inhibitor,    c) stabilizer and d) further materials as necessary.    
   
   
       2 . The liquid according to  claim 1 , in which the inhibitor is at least one of the following materials: 
 benzoates, ethanolic boric acid, phosphates and phophonates as well as benzotriazole, tolytriazole, sodium mercapto benzotriazole, amino alkyl benzimidazoles, molybdates, sodium nitrite, sebacates or silicates.    
   
   
       3 . The liquid according to  claim 1 , in which the inhibitor is at least one of the following materials: carboxylic acids, amines or their derivatives.  
   
   
       4 . The liquid according to  claim 1 , in which the stabilizer is at least one of the following materials: cellulose ether, alginate, starch, starch ether, guar, guar ether or xanthane.  
   
   
       5 . The liquid according to  claim 1 , in which at least one of the further materials is a wax emulsion.  
   
   
       6 . The liquid according to  claim 5  with a wax emulsion on the basis of at least one of the following materials: paraffin, oxidized paraffin, polyethylene, polypropylene or amide wax such as for example ethylene-bis-stearylamide, stearylamide or stearate.  
   
   
       7 . The liquid according to  claim 1 , in which at least one of the other materials is a dispersion agent.  
   
   
       8 . The liquid according to  claim 7 , in which the dispersion agent is a polyacrylic acid.  
   
   
       9 . The liquid according to  claim 1 , in which at least one of the other materials is a temporary binder.  
   
   
       10 . A use of a liquid according to  claim 1  for the preparation of powder mixtures on the basis of iron or stainless steel.  
   
   
       11 . The use of a liquid according to  claim 10  as mixing liquid for the preparation of powder mixtures on the basis of iron or stainless steel.  
   
   
       12 . A method for the preparation of powder mixtures on the basis of iron or stainless steel, in which a powder mixture on the basis of iron or stainless steel is initially mixed in a liquid in accordance with  claim 1  and is subsequently dried  
   
   
       13 . The method according to  claim 12  in which the drying is carried out in a spray drying unit.