Primary Water SCC Understanding and Characterization Through Fundamental Testing in the Vicinity of the Nickel/Nickel Oxide Phase Transition

Technical Report · Tue May 08 04:00:00 EDT 2001

DOI:https://doi.org/10.2172/821310· OSTI ID:821310

Morton, D S; Attanasio, S A; Young, G A

This paper quantifies the nickel alloy stress corrosion crack growth rate (SCCGR) dissolved hydrogen level functionality. SCCGR has been observed to exhibit a maximum in proximity to the nickel/nickel oxide phase transition. The dissolved hydrogen level SCCGR dependency has been quantified in a phenomenological model in terms of the stability of nickel oxide not the dissolved hydrogen level. The observed SCCGR dependency has been extended to lower temperatures through the developed model and Contact Electrical Resistance (CER) measurements of the nickel/nickel oxide phase transition. Understanding obtained from this hydrogen level SCC functionality and complementary SCC subprocesses test results is discussed. Specifically, the possible SCC fundamental subprocesses of corrosion kinetics, hydrogen permeation and pickup have also been measured for nickel alloys. Secondary Ion Mass Spectroscopy (SIMS) analysis has been performed on SCCGR specimens tested in heavy water (D{sub 2}O).

• Research Organization: Lockheed Martin Corporation, Schenectady, NY 12301 (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC12-00SN39357
• OSTI ID: 821310
• Report Number(s): LM-01K038
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
36 MATERIALS SCIENCE
42 ENGINEERING
CORROSION
CRACK PROPAGATION
ELECTRIC CONDUCTIVITY
HEAVY WATER
HYDROGEN
KINETICS
MASS SPECTROSCOPY
NICKEL ALLOYS
NICKEL OXIDES
OXIDES
STABILITY
STRESS CORROSION
TESTING
WATER