Nuclear fusion reactor first wall component and production process thereof
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United States of America Patent
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Apr 28, 2015
Grant Date -
Jul 10, 2014
app pub date -
Jul 27, 2012
filing date -
Aug 1, 2011
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Abstract
A nuclear fusion reactor first wall component includes a copper alloy element, an intermediate metal layer made from niobium and a beryllium element, directly in contact with the intermediate metal layer. The intermediate niobium layer is further advantageously associated with a mechanical stress-reducing layer formed by a metal chosen from copper and nickel. This mechanical stress-reducing layer is in particular arranged between the intermediate niobium layer and the copper alloy element. Furthermore, when the mechanical stress-reducing layer is made from pure copper, a layer of pure nickel can be inserted between the niobium and the pure copper before diffusion welding. Such a component presents the advantage of having an improved thermal fatigue behavior while at the same time preventing the formation of intermetallic compounds at the junction between the beryllium and the copper alloy.
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