In a groundbreaking study published in ‘Frontier Materials & Technologies’, researchers from the Moscow Aviation Institute, led by Evgeny Yu. Zhukov, have delved into the complexities of centrifugal atomisation mechanisms, a process that holds significant implications for the production of metal powders used in construction and manufacturing. The research aims to enhance the efficiency and quality of metal powder production, a critical component in various construction applications, including 3D printing and advanced material fabrication.
The study examines the intricacies of melt dispersion on a rotating bowl, a method widely employed to create fine metal powders. Traditional approaches to studying this process often fall short due to the challenges of visualizing real melts. To overcome this, Zhukov and his team utilized a glycerol solution, mimicking the viscosity of tin melt, and conducted high-speed filming at an impressive 1,200 frames per second. This innovative approach allowed them to capture the dynamics of droplet formation under varying conditions, such as jet fall height and liquid flow rate.
“Understanding the optimal conditions for droplet formation is crucial,” Zhukov stated. “Our findings reveal that small adjustments in parameters can lead to significant improvements in the quality of the powder produced, which is essential for applications in the construction sector.”
One of the key discoveries of the research is the impact of flow rates on droplet size. As the melt flow increases, the study identified a shift in the spray mode, leading to the premature spraying of excess liquid. This premature dispersion can result in larger droplet sizes, which are less desirable for applications requiring fine powders. Conversely, the researchers found that maintaining a jet fall height between 50 to 100 mm yielded the smallest particle fractions, highlighting the delicate balance needed to optimize the process.
Moreover, the study underscores the importance of the bowl’s surface finish. A smoother finish appears to facilitate better dispersion by prolonging the liquid’s path before it exits the bowl, ultimately resulting in a more refined powder. “The interaction of the liquid with the bowl walls can significantly enhance the dispersion process,” Zhukov explained, emphasizing the practical implications of their findings.
The commercial ramifications of this research are substantial. As the construction industry increasingly adopts advanced materials and techniques, the demand for high-quality metal powders is poised to rise. Improved atomisation processes could lead to more efficient production methods, reducing costs and enhancing the performance of construction materials.
This research not only advances our understanding of metal powder production but also sets the stage for future innovations in the construction sector. By refining the atomisation process, manufacturers can produce materials that are not only more efficient but also tailored to the specific needs of modern construction practices. As the industry continues to evolve, the insights gained from Zhukov’s study may very well shape the future landscape of material science and construction technology.
For more information about the Moscow Aviation Institute, you can visit their website at Moscow Aviation Institute (National Research University).
