The corrosion behavior of porous Ni sub(3Al intermetallic materials in strong alkali solution)
Porous Ni sub(3Al alloys was prepared by cold pressing and reactive synthesis of Ni and Al elemental powders via the Kirkendall effect. Corrosion behavior of porous Ni) sub(3)Al alloys was investigated by electrochemical tests and weight change measurements. Polarization resistance indicated that po...
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Veröffentlicht in: | Intermetallics 2011-11, Vol.19 (11), p.1759-1765 |
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Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Porous Ni sub(3Al alloys was prepared by cold pressing and reactive synthesis of Ni and Al elemental powders via the Kirkendall effect. Corrosion behavior of porous Ni) sub(3)Al alloys was investigated by electrochemical tests and weight change measurements. Polarization resistance indicated that porous Ni sub(3Al had more positive free corrosion potential and lower corrosion current than porous Ni and porous Ti and exhibited a wider passive region. The immersion test revealed that after 2000 h immersion, the weight change and pore structure of porous Ni) sub(3)Al stayed stable in KOH solution. The influence of temperature on corrosion behavior and corrosion mechanism of porous Ni sub(3Al were also discussed.) |
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ISSN: | 0966-9795 |
DOI: | 10.1016/j.intermet.2011.06.016 |