Corrosion Behavior of Molybdenum in Molten Aluminum

Hong Feng Luo; Jing Wu; Zhe Liu; Wei Ping Chen

doi:10.4028/www.scientific.net/AMM.155-156.969

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 155-156Corrosion Behavior of Molybdenum in Molten...

Corrosion Behavior of Molybdenum in Molten Aluminum

Abstract:

Corrosion of molybdenum in molten aluminum was investigated by static immersion tests. The layer formed between aluminum and molybdenum was consist of Al4Mo at 700°C, Al8Mo3 at 750°C, Al4Mo and Al8Mo3 at 800°C range for periods varying from 8 to 120 h . The intermetallic layer broke up as long as it grew due to thermal stresses and dispersed in the molten aluminum. The weight-loss of molybdenum varied linearly with time. The corrosion rate increased with temperature and the activation energy was nearly 88.4 kJ mol-1.