Nickel-based semifinished product having a cube recrystallization texture, corresponding method of production and use

Abstract

A nickel-based semifinished product has a cube recrystallization texture and the semifinished product can e.g. be used as a support for physicochemical coatings having a highly microstructured orientation. Such supports are e.g. suitable as substrates for ceramic coatings such as are used in the field of high-temperature supraconductivity. In this case, the product is used in supraconducting magnets, transformers, motors, tomographs and supraconducting current paths. There is provided a nickel-based semifinished product that has improved performance characteristics when used as a support for physicochemical coatings having a highly microstructured orientation. Especially the semifinished product should have a higher-grade, thermally more stable cube texture while substantially preventing the formation of grain boundary grooving. For this purpose, Ag in the microalloy range is added to the material of the semifinished product, the added Ag being not more than 0.3 atomic percent. The inventive semifinished product is e.g. suitable as a support for physicochemical coatings having a highly microstructured orientation.

1 .- 6 . (canceled)  
   
   
       7 . A semi-finished product on a nickel basis, comprising: 
 a nickel-based material including one of technically pure nickel and a nickel alloy; and    silver added to said nickel-based material in a micro-alloying range not exceeding 0.3 atom percent, said semi-finished product having a cubic recrystallization texture.    
   
   
       8 . A semi-finished product according to  claim 7 , wherein: 
 said nickel-based material is said nickel alloy; and    said nickel alloy contains at least one of molybdenum and tungsten as alloying elements.    
   
   
       9 . A semi-finished product according to  claim 7 , wherein a cubic textured nickel oxide layer with a textured portion of more than 90% is present on said semi-finished product.  
   
   
       10 . A semi-finished product according to  claim 8 , wherein a cubic textured nickel oxide layer with a textured portion of more than 90% is present on said semi-finished product  
   
   
       11 . A semi-finished product according to  claim 7 , wherein said semi-finished product serves as a base for chemical coatings, said semi-finished product further comprising a physical chemical coating on said base, said chemical coating having a high-grade microstructural alignment.  
   
   
       12 . A semi-finished product according to claim  111  wherein said base and coating define, at least in part, one of a flat wire high-temperature superconductor and a strip-shaped high-temperature superconductor.  
   
   
       13 . A semi-finished product according to  claim 8 , wherein said semi-finished product serves as a base for chemical coatings, said semi-finished product further comprising a physical chemical coating on said base, said chemical coating having a high-grade microstructural alignment.  
   
   
       14 . A semi-finished product according to  claim 13  wherein said base and coating define, at least in part, one of a flat wire high-temperature superconductor and a strip-shaped high-temperature superconductor.  
   
   
       15 . A semi-finished product according to  claim 9 , wherein said semi-finished product serves as a base for chemical coatings, said semi-finished product further comprising a physical chemical coating on said base, said chemical coating having a high-grade microstructural alignment.  
   
   
       16 . A semi-finished product according to  claim 15  wherein said base and coating define, at least in part, one of a flat wire high-temperature superconductor and a strip-shaped high-temperature superconductor.  
   
   
       17 . A method for the production of a semi-finished product, comprising: 
 adding silver to a nickel-based material in a micro-alloying range which does not exceed 0.3 atom %, said nickel-based material including one of technically pure nickel and a nickel alloy;    processing said semi-finished product by hot working;    carrying out high-grade cold working of more than an 80% reduction in thickness of said semi-finished product; and    subjecting said semi-finished product to a recrystallizing annealing to achieve a substantially cubic texture.    
   
   
       18 . A method according to  claim 17 , wherein said step of adding includes one of melt metallurgical and powder metallurgical processes.  
   
   
       19 . A method according to  claim 17 , wherein said step of carrying out high-grade cold working results in forming of said semi-finished product into one of a strip and flat wire.  
   
   
       20 . A method according to  claim 17 , further comprising heat treating the semi-finished product in an oxidizing atmosphere one of during and after said step of subjecting said semi-finished product to the recrystallizing annealing, for the purpose of growing a cubic textured nickel oxide layer.  
   
   
       21 . A method according to  claim 17 , further comprising: 
 forming the semi-finished product into a base; and    coating said base with a physical chemical coating having a high-grade microstructural alignment.    
   
   
       22 . A method according to  claim 21 , wherein said step of forming creates a shape of said base suitable for use as at least one of a flat wire high-temperature superconductor and a strip-shaped high-temperature superconductor.