Solid-State Diffusion Bonding of Glass-Metal for the International Thermonuclear Experimental Reactor (ITER) Diagnostic Windows
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The United Kingdom Atomic Energy Authority is involved in the design and manufacture of the diagnostic windows for ITER. ITER is an international project, with 35 nations collaborating to design, construct, and operate a prototype controlled nuclear fusion reactor in southern France. As well as providing line of sight for diagnostics, the windows also form part of the reactor primary containment boundary and are consequently classified as nuclear Safety Important Class 1 (SIC-1) components. The windows will be the first SIC-1 components in the world which are non-metallic. The current manufacturing process involves diffusion bonding a glass window to an Inconel 625 ferrule via an aluminium interlayer. This report discusses this diffusion bonding process and details the specific challenges related to component qualification for the intended nuclear SIC-1 application.
KeywordsDiffusion bonding Ceramic-metal joining Diagnostic windows Nuclear fusion ITER
This work was supported by the ITER Organization through the framework contract (6000000117). The views and opinions expressed herein do not necessarily reflect those of the ITER Organization.
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