Feasibility of on-site generated nitrogen as a sustainable cold spray process gas
摘要
When compared to traditional methods, cold spray can be viewed as a more sustainable manufacturing process due to its additive nature. This work investigates enhancing the sustainability of cold spray by employing on-site generated nitrogen (N2) as a process gas, despite its reduced purity. Two metal powders, nickel and chromium, were examined to explore the effects of N2 produced from generation systems on the deposition and mechanical properties of cold sprayed specimens. The objective was to validate that variations in purity does not compromise the quality of the cold sprayed deposits, thus demonstrating the feasibility of generated nitrogen as a process gas for cold spray. The results suggest that generated N2 is a viable process gas for nickel powder, though the chromium powder was sensitive to the reduction in purity. The results of this work will continue efforts to maintain the sustainability of cold spray while producing high quality coatings.