Abstract
This study investigated the influence of Mo addition on the structure, hardness, and corrosion behavior of Al-xMo alloy (x = 0, 10, 30 wt.%) produced by high-frequency magnetic melting. Variations in microstructure, hardness, and corrosion behavior in a 3.5 % NaCl solution were studied. The results show that the high-frequency induction melting technique increases the solubility of Mo in Al from 0.07 to 0.35 at.% Mo. The 10 wt.% Mo addition induces the formation of Al₁₂Mo and Al₅Mo(r) intermetallic phases, while the 30 wt.% Mo addition leads to the appearance of a new, molybdenum-rich Al17Mo5 intermetallic phase. The increase in Mo content shifts the corrosion potential towards nobler values and decreases the corrosion current density from 0.85 µA cm⁻² for Al to 0.29 µA cm⁻² for the Al-30 wt.% Mo alloy. Additionally, an improvement in polarization resistance was observed, reaching 2812 Ω for the Al-30 wt.% Mo alloy.

Key words
high-frequency magnetic melting, Al-Mo, intermetallic, corrosion, microstructure

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