Cleaning surface treatments for the fabrication of ITER First Wall panels by HIP

This paper presents our investigations to find an industrial route to clean copper alloy and stainless steel in order to manufacture high-strength joints for ITER Primary First Wall panels. Products investigated are chemical liquids, and a more advanced technique that uses a plasma process is also investigated. HIP joints have been tested by performing impact toughness and tensile tests. Surface cleanliness has been assessed thanks to XPS measurements.