• • 10 wt.% Fe-based amorphous powder addition raises coating hardness to 1200 HV0.2, a 1.3× increase over NiCrMo baseline, directly enhancing resistance to abrasive wear in marine hydraulic components.
• • Passive current density decreases from 1 mA to 100 μA (an order of magnitude) at 10 wt.% amorphous content, significantly reducing corrosion rates in seawater exposure.
• • Under wear-corrosion coupling, the 10 wt.% coating maintains optimal passive film stability, with electrochemical response closest to an ideal capacitor, minimizing material loss in tribocorrosion conditions.
• • Excessive amorphous content (20 wt.%) degrades hardness to 723 HV0.2 due to increased FCC phase and coarsened Mo-rich precipitates, establishing a clear upper threshold for industrial formulation.