期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 42, 期 6, 页码 3023-3035出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2022.01.040
关键词
Magnesium; Ceramics; SEM; Interface reactions; Wettability
资金
- German Research Foundation (DFG) [169148856]
- Collaborative Research Center 920 Multifunctional Filters for Metal Melt Filtration - A contribution towards Zero Defect Materials [169148856]
This study investigates the wettability and interfacial reactivity of various ceramics (ZrO2, Al2O3, Al2O3-C, MgO, MgAlON) in contact with molten AZ91. The results show that MgAlON and Al2O3-C have low wettability, while the Al2O3- and ZrO2-containing ceramics undergo noticeable interface reactions with molten AZ91.
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 degrees 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.
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