Abstract
Wettability and interfacial reactivity of various ceramics (ZrO2, Al2O3, Al2O3-C, MgO, MgAlON) in contact with molten AZ91 were investigated in this paper. MgAlON and Al2O3-C are new materials to be used in magnesium melt filtration, a comparative study of its wettability and corrosion resistance is performed to evaluate their applicability. Modified sessile-drop tests were conducted, measuring contact angles between the ceramic substrates and molten AZ91 droplets at 680 °C; contact surfaces were analyzed by means of scanning electron microscopy. MgAlON showed the largest contact angles, indicating lowest wettability. Al2O3, Al2O3-C, and MgO proved non-wettable as well. Al2O3- and ZrO2-containing substrates underwent noticeable interface reactions with molten AZ91.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
