The effect of sodium molybdate on the pitting corrosion of aluminum
CORROSION SCIENCE, cilt.45, sa.11, ss.2415-2433, 2003 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 45 Sayı: 11
- Basım Tarihi: 2003
- Doi Numarası: 10.1016/s0010-938x(03)00097-0
- Dergi Adı: CORROSION SCIENCE
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.2415-2433
- Anahtar Kelimeler: aluminum, pitting corrosion, molybdate, EIS, POTENTIODYNAMIC BEHAVIOR, CATHODIC POLARIZATION, PASSIVE FILM, ANODIC FILMS, CHROMATE, COATINGS, ALLOYS, ION
- Ankara Üniversitesi Adresli: Evet
Özet
The effect of molybdates, in the concentration range 0.001-0.1 mol dm(-3), at pH 10, 7 and 3 has been studied using potentiodynamic and impedance methods. E-pp is seen to shift as much as 450 mV depending on the chloride ion concentration. The competitive adsorption of chloride and molybdate anions at the flawed regions followed by oxidation/reduction has been proposed as the passivating mechanism. (C) 2003 Elsevier Ltd. All rights reserved.