First-wall component for a fusion reactor with a heat sink of a copper alloy

Abstract

A first-wall component of a fusion reactor has a heat shield and a heat sink. The heat shield is formed of a material from the group of graphite material, carbidic material, tungsten and tungsten alloy. The heat sink is formed of a spray-compacted copper alloy.

1 . A first-wall component of a fusion reactor, comprising at least one heat shield of a material selected from the group consisting of graphitic material, carbidic material, tungsten and tungsten alloy, and a heat sink formed of a spray-compacted copper alloy. 
   
   
       2 . The first-wall component according to  claim 1 , wherein said copper alloy has an average grain size of <50 μm. 
   
   
       3 . The first-wall component according to  claim 1 , wherein a d 90  value and a d 50  value of a grain size distribution in said copper alloy satisfy the following relationship: d 90 <3×d 50 . 
   
   
       4 . The first-wall component according to  claim 1 , wherein said copper alloy is precipitation-hardenable. 
   
   
       5 . The first-wall component according to  claim 4 , wherein said copper alloy consists essentially of 0.3 to 1.2% by weight of Cr, 0.03 to 0.3% by weight of Zr, and a remainder of Cu and customary impurities. 
   
   
       6 . The first-wall component according to  claim 1 , wherein said copper alloy has a degree of deformation of greater than 70%. 
   
   
       7 . The first-wall component according to  claim 1 , which comprises an intermediate layer of pure copper disposed between said heat sink and said heat shield. 
   
   
       8 . The first-wall component according to  claim 1  formed in a monobloc style. 
   
   
       9 . The first-wall component according to  claim 1  formed as a flat tile.