Chronoamperometric study of mild steel pitting in sodium sulfide aqueous solution

Journal Article · Mon Aug 01 00:00:00 EDT 1994 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3293528· OSTI ID:6989088

Otero, T F; Achucarro, C ^[1]

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1. Lab. de Electroquimica, San Sebastian (Spain). Dept. de Ciencia y Tecnologia de Polimeros

Mild steel samples were studied by chronoamperometry in sodium sulfide (Na[sub 2]S) aqueous solution. Pit nucleation and growth also were monitored by optical microscopy. The influence of variables such as temperature, polarization potential, surface roughness, the presence of electrochemically generated oxide layers, and the simultaneous presence of potassium hydroxide (KOH) was studied. The influence of each parameter on pit shape and growth was reviewed. Different reactions and competitive processes were proposed based on the experimental results.

• OSTI ID: 6989088
• Journal Information: Corrosion (Houston); (United States), Vol. 50:8; ISSN 0010-9312
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SODIUM SULFIDES
CORROSIVE EFFECTS
STEELS
PITTING CORROSION
AMPEROMETRY
COOLING SYSTEMS
INDUSTRIAL WASTES
SULFATE-REDUCING BACTERIA
WASTE WATER
ALKALI METAL COMPOUNDS
ALLOYS
BACTERIA
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
ENERGY SYSTEMS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LIQUID WASTES
MICROORGANISMS
OXYGEN COMPOUNDS
SODIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TITRATION
WASTES
WATER
360105* - Metals & Alloys- Corrosion & Erosion