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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