The early stage oxidation and evaporation of Mg-9%Al-1%Zn alloy |
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Authors: | F. Czerwinski |
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Affiliation: | Development Engineering, Husky Injection Molding Systems Ltd., 560 Queen Street S., Bolton, Ont., Canada L7E 5S5 |
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Abstract: | Thermogravimetric technique was used to determine the oxidation and evaporation behaviour of AZ91D magnesium alloys with 5 and 10 ppm of beryllium at temperatures between 200 and 500 °C. Depending on temperature and time, the alloy experienced protective or non-protective oxidation with linear or accelerated oxide growth kinetics. During reaction in an oxidizing atmosphere, the additions of beryllium delayed the transient from the protective to non-protective scale formation. In an inert atmosphere, increased beryllium contents reduced the magnesium evaporation rate. |
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Keywords: | Magnesium alloys AZ91D C. Oxidation MgO Beryllium Thixomading |
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