from the conferences organized by TANGER Ltd.
Metallic materials have made possible technological developments over thousands of years. The increased demand for structural nickel alloys in critical areas such as energy, construction, and safety are expected to drive production growth rates of up to 200 percent in 30 years. However, most of these materials take a significant amount of energy to extract and manufacture, and these processes create substantial volumes of greenhouse gases and pollutants. This study was done with the aim of enhancing nickel alloy reuse and examining recycled materials in the corrosion environment of supercritical carbon dioxide. The tested materials were Ni-base alloys Inconel 738 and Inconel 713. The recycled content of the newly created alloy was 50 percent and 100 percent. These specimens were then exposed to 1000 hours of loop operation at a maximum operating temperature of 550 °C and a maximum operating pressure of 25 MPa, with a constant flow rate of sCO2 medium of 0.1 kg/s. The specimen surface, corrosion layer thickness and composition were evaluated by Scanning Electron Microscope (SEM) with Energy Dispersive Spectroscopy (EDS).
Keywords: Nickel alloys, sCO2, sustainability, recycling, corrosion© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.