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Investigation of Hot Corrosion Behavior on QE22A-Magnesium Silver Alloy through Steaming Method
- A. Shailesh Rao - The National Institute of Engineering, Department of Industrial and Production Engineering, India ,
- M.A. Sangamesh - The National Institute of Engineering, Department of Chemistry, India ,
- Haridas Nayak - PES University, Department of Mechanical Engineering, India ,
- B. M. Latha - The National Institute of Engineering, Department of Industrial and Production Engineering, India ,
- B. K. Pallavi - The National Institute of Engineering, Department of Industrial and Production Engineering, India
Journal Article
05-15-03-0015
ISSN: 1946-3979, e-ISSN: 1946-3987
Sector:
Topic:
Citation:
Shailesh Rao, A., Sangamesh, M., Nayak, H., Latha, B. et al., "Investigation of Hot Corrosion Behavior on QE22A-Magnesium Silver Alloy through Steaming Method," SAE Int. J. Mater. Manf. 15(3):219-228, 2022, https://doi.org/10.4271/05-15-03-0015.
Language:
English
Abstract:
The hot corrosion studies for the die-casted magnesium (Mg) silver (Ag) alloys
are carried out through the steam heating route. The Magnesium Silver (QE22A)
alloy is fixed under the top lid of the pressure cooker (2 liters) and filled
with water and 5% salt (NaCl) solution. The specimens are treated with different
time intervals (10, 20, and 30 minutes), with the steam temperature maintained
at 100°C around the specimen. The results showed an increase in the corrosion
rate with the increase in the steaming time. Further, after the specimens have
cooled down to room temperature, similar experiments are repeated for the second
and third cycles. Here the formation of the oxide layers over the specimen has
reduced the corrosion rate. The structural, surface study was carried out
through scanning electron microscopy (SEM), X-ray diffraction (XRD), and
energy-dispersive spectroscopy (EDS) to know the corrosion behavior on the
specimen. From the microstructure, it is noticed that the average grain size
increased with the increase in the time intervals. Through SEM images, detailed
studies on the crack length and pitting width were carried out. Finally, a
comparison of pure and corroded alloys is made and discussed in detail.