Environmental aspects of SCC of high alloys in sour environments
Journal Article
·
· Corrosion (Houston); (USA)
- Pipe and Tube Research Lab. Nippon Steel Corporation, 5-10-1 Fuchinobe, Sagamihara, Kanagawa (JP)
The initiation and propagation of stress corrosion cracking (SCC) of high alloys in sour gas environments are investigated mainly from the viewpoint of cathodic reactions. The most probable cathodic reaction to support the metal dissolution in the pitting and/or cracking process is identified by means of electrochemical measurements. Among various environmental constituents, the influence of elemental sulfur on the dynamics and kinetics of the cathodic reaction is clarified. The role of elemental sulfur in the growth of pits and SCC is examined in detail. A suitable prediction technique to determine the SCC limits of high alloys is also discussed in relation to pitting corrosion as a precursor of SCC.
- OSTI ID:
- 6955417
- Journal Information:
- Corrosion (Houston); (USA), Journal Name: Corrosion (Houston); (USA) Vol. 45:9; ISSN 0010-9312; ISSN CORRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
ALLOYS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CORROSION
CORROSIVE EFFECTS
CRACK PROPAGATION
DISSOLUTION
ELECTROCHEMICAL CORROSION
ELEMENTS
ENVIRONMENTAL EFFECTS
KINETICS
NONMETALS
PITTING CORROSION
REACTION KINETICS
STRESS CORROSION
SULFUR
360103 -- Metals & Alloys-- Mechanical Properties
360105* -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
ALLOYS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CORROSION
CORROSIVE EFFECTS
CRACK PROPAGATION
DISSOLUTION
ELECTROCHEMICAL CORROSION
ELEMENTS
ENVIRONMENTAL EFFECTS
KINETICS
NONMETALS
PITTING CORROSION
REACTION KINETICS
STRESS CORROSION
SULFUR