Synergistic inhibition of ferric ion corrosion during chemical cleaning of metal surfaces

Journal Article · Sat Apr 01 04:00:00 EST 1972 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/0010-9312-28.4.143· OSTI ID:5965541

Streicher, M A

To minimize attack on metals during cleaning with acid solutions containing dissolved iron in the ferric state, both hydrogen evolution corrosion and ferric ion corrosion must be effectively inhibited. There are many inhibitors which effectively reduce hydrogen evolution corrosion, but these have a relatively small effect on ferric ion corrosion. Data are provided which show the synergistic action of certain substituted thioureas and thioamides with certain alkali metal and amine alkyl or alkyl-aryl sulfonates and sulfonated esters in effectively inhibiting both ferric ion and hydrogen evolution corrosion on ferrous and other metals during exposure to a variety of acids. Potentiostatic measurements indicate that inhibition is a result of retardation of cathodic reactions. (12 refs.)

• Research Organization: E.I. DuPont de Nemours Co.
• OSTI ID: 5965541
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 28:4; ISSN CORRA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ACIDIZATION
ALKALI METALS
ANTITHYROID DRUGS
CARBONIC ACID DERIVATIVES
CHEMICAL REACTIONS
CLEANING
CORROSION
CORROSION INHIBITORS
DRUGS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HORMONE ANTAGONISTS
HYDROCHLORIC ACID
HYDROGEN
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IRON COMPOUNDS
METALS
NONMETALS
OIL WELLS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PETROLEUM
STIMULATION
SULFONATES
THIOUREA
THIOUREAS
TRANSITION ELEMENT COMPOUNDS
WELL COMPLETION
WELL STIMULATION
WELLS