Nuclear fusion reactor first wall component and production process thereof

US9018605B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Pierre Eric Frayssines · Fontaine, FR
• Philippe Bucci · Fontaine, FR
• Jean-Marc Leibold · Le Pont-de-Claix, FR
• Emmanuel Rigal · Saint-Égrève, FR

Key dates

• Filing date: Jul 27, 2012
• Grant date: Apr 28, 2015
• Expiry date: Jul 27, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1291
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

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.