Corrosion resistance of Cu- and Fe-modified Ni–30Co–16Cr–15Mo alloy in aqueous hydrofluoric acid
Source abstract
Abstract
Abstract The effect of Cu and Fe addition on the corrosion resistance of Ni–30Co–16Cr–15Mo in hydrofluoric acid was investigated by immersion testing at 100 °C. Microstructural observation revealed that adding 15 wt.% Fe gives rise to a significantly deteriorated corrosion resistance that is characterized by preferential dissolution along grain boundaries, especially in cold-forged sample. Meanwhile, alloy modified with 15 wt.% Fe and 2 wt.% Cu exhibited a tremendous improvement in corrosion resistance, even after cold forging. This is probably attributed to the rapid formation of a Cu-rich passive film, which is ascribable to the noble nature and high reorganising ability of Cu.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced materials and composites · High-Temperature Coating Behaviors · Metal Alloys Wear and Properties
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