Magnesium alloy die casting materials and aluminum alloy die casting material have great differences in the chemical and physical properties. Mainly in the following aspects: the chemical reaction activity, the oxide compactness on the surface of liquid metal, thermal effects in the process of solidification, electrochemical corrosion resistance etc..
Magnesium with chemical reaction activity stronger than aluminum. The surface of molten aluminium alloys can form dense oxide film to prevent further oxidation of aluminum, but the liquid state magnesium alloy surface cannot form the compact oxide film, so magnesium alloy is easy to combustion and explosion. Magnesium alloy is easy to dissolve other metals, including nickel, copper and other elements, these elements will greatly reduce the electrochemical corrosion resistance of magnesium alloy die casting. In addition, The same volume of liquid aluminum alloy and magnesium alloy, the magnesium alloy heat release was lower than the liquid aluminum alloy in solidification process.
yazhublog1503
The above article from KENOS official website (http://www.kenos-diecasting.com/)
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Magnesium with chemical reaction activity stronger than aluminum. The surface of molten aluminium alloys can form dense oxide film to prevent further oxidation of aluminum, but the liquid state magnesium alloy surface cannot form the compact oxide film, so magnesium alloy is easy to combustion and explosion. Magnesium alloy is easy to dissolve other metals, including nickel, copper and other elements, these elements will greatly reduce the electrochemical corrosion resistance of magnesium alloy die casting. In addition, The same volume of liquid aluminum alloy and magnesium alloy, the magnesium alloy heat release was lower than the liquid aluminum alloy in solidification process.
yazhublog1503
The above article from KENOS official website (http://www.kenos-diecasting.com/)
The original address: http://www.kenos-diecasting.com/news_show_64.html, reproduced please specify
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