Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1470876 | Corrosion Science | 2009 | 6 Pages |
Abstract
The oxidation rates, the morphologies and compositions of the surface films on molten magnesium and AZ91D alloy in covering gas of 1,1,1,2-tetrafluoroethane/air at 760 °C were investigated using thermogravimetric techniques, SEM, XRD and XPS. The oxidation rates of the two melts followed parabolic law in the atmosphere of high concentrate 1,1,1,2-tetrafluoroethane, and obeyed linear law in the atmosphere of low concentrate 1,1,1,2-tetrafluoroethane. But the oxidation rates of molten magnesium and AZ91D alloy presented a certain difference. The oxidation products on its surface films were composed of MgF2 which played an import role to prevent the molten oxidation and other compounds.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jian-Rui Liu, Hu-Kui Chen, Lun Zhao, Wei-Dong Huang,