Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1635685 | Transactions of Nonferrous Metals Society of China | 2015 | 9 Pages |
Abstract
The interaction between a molten magnesium alloy AE44 and a SiC-Al2O3-SiO2 ceramics and the resulting reaction products were studied. The samples were investigated using optical and electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. SiO2 was predominantly reduced by Mg during the contact of the magnesium-rich melt with the ceramics. The main reaction product was MgO, whilst Si dissolved in the melt. Two novel tetragonal phases formed at the interface: AlSiRE and AlMgSiRE, having a specific mutual crystallographic orientation relationship. The interactions resulted in strongly connected interfaces between the metal and ceramics after short interaction time; however, interactions lead to disintegration of the ceramics after longer contact time.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Matej STEINACHER, Primož MRVAR, Franc ZUPANIÄ,