... the occurrence of crevice corrosion at R ≥ R_CRIT. This review focuses on the mechanisms of crevice corrosion inhibition of Alloy 22. The localized acidification model is used to explain the different effects of anodic inhibitors on E_R,CREV. Papers on this topic published over the last...

... corrosion was initiated by applying an externally controlled potential and the current decay monitored as a function of time to determine values of A, k, and n. Abstract Alloy 22 is susceptibility to crevice corrosion in concentrated chloride solutions at elevated temperature. A number of oxyanions, most...

... of the chromium-rich passive film in mildly alkaline solutions where such a film was not observed. In particular, the solutions examined in this paper were originally evaluated experimentally by Chiang, et al. ⁴ to examine the stress corrosion cracking susceptibility of Alloy 22. Experimental tests...

...Abstract The U.S. Department of Energy (DOE) has indicated that it may use Alloy 22 as the waste package outer container material for the potential high-level waste repository at Yucca Mountain, Nevada. Long-term corrosion performance of Alloy 22 is key to containment of radionuclides within...

... ∗ Currently a graduate student at the Massachusetts Institute of Technology Abstract Alloy 22 may be used as the waste package outer container material for disposal of high-level waste at the potential repository at Yucca Mountain, Nevada. Crevice corrosion is one of the corrosion processes...

... of the simple algorithms is provided. crevice corrosion pitting stress corrosion cracking oxygen concentration cell steel stainless steels nickel-base alloys alloy 22 INTRODUCTION In natural corroding environments, a potential gradient exists between inside and outside of, and within, an occlusion...

...Abstract Passive metals and alloys depend on the durability of passive oxide films for high corrosion resistance. This paper discusses the durability of the passive film on alloy 22 (a Ni-Cr-Mo alloy) as a function of chemical, thermal and mechanical durability. The durability of the passive film...

...Abstract The effect of hydrogen permeation on the corrosion performance of Alloy 22 was investigated. 50µm thick Alloy 22 membranes were permeated with Hydrogen under a cathodic charging current density of 1mA/cm² in a Devanathan-Stachurski cell at 60°C in pH 12.5, 0.1M NaOH solution...

... carbon steel titanium alloys Alloy 22 INTRODUCTION Microbiologically influenced corrosion (MIC) is one of a number of corrosion processes that may limit the lifetime of nuclear waste containers, in addition to general and localized cracking, environmentally assisted cracking, various hydrogen-related...

...Alloy 22 (UNS number N06022) is a nickel alloy rich in chromium (Cr) and molybdenum (Mo), with a high degree of corrosion resistance. It exhibits a low general corrosion rate under most conditions and has formidable localized and general corrosion resistance in most environments ^{1 - 8}...

... to the behavior observed for Alloy 22 in 5 M CaCl₂ at between 60 and 75 °C. ¹³ The curve also shows some unconventional behavior on its reverse scan. The current density immediately begins to drop when the current scan is reversed at 1 V. The current density drops below 1 μAcm^-2...

...INTRODUCTION The waste package ¹ for the potential high-level waste repository at Yucca Mountain, Nevada, may consist of an outer container made from Alloy 22 (Ni-22Cr-13Mo-4Fe-3W) and an inner container made of Type 316 nuclear grade stainless steel (low C-high N-Fe-18Cr-12Ni-2.5Mo...

... the solution. The cyclic potentiodynamic polarization technique (CPP) (ASTM G 61) ²¹ was used to determine the electrochemical characteristics of Alloy 22 in these media. The specimen was attached to the connecting rod via a PTFE gasket which provided an artificial metal/non metal crevice. Before...

..., Nevada, may consist of an outer container made of Alloy 22 and an inner container made of Type 316 nuclear grade stainless steel. The crevice corrosion propagation behavior of Alloy 22 in 5 M NaCl solution at 95 °C has been investigated using single and multiple crevice assemblies. After the addition...

... of Alloy 22 will define the lifetime of a component such as a waste container if all other degradation modes are not operative. This represents the best-case scenario because the experimentally determined uniform corrosion rates from multi-year tests is 0.01 μm/yr or 0.1 mm in 10,000 years...

...INTRODUCTION Telephone: (210) 522-2308 Abstract The potential engineering barriers for the permanent disposal of high-level waste at the Yucca Mountain site include an Alloy 22 outer container. One of the anticipated degradation modes for the container is stress corrosion cracking of Alloy 22...

...Abstract The susceptibility of mill-annealed (MA), solution annealed (SA), and short-term thermally aged (STA) Alloy 22 and gas tungsten arc welded (GTAW) Alloy 22 to Pb-assisted stress corrosion cracking (PbSCC) is evaluated in supersaturated PbCl₂ and Pb(NO₃)₂...

... as the applied potential was increased from a passive region to a potential where transpassive dissolution was observed. For the control specimen ( Figure 1 ) and the Alloy 22 treated in the passive region ( Figure 2 ), three regions can be defined in the concentration depth profiles: the outer contamination...

...Abstract The study of the electrochemical behavior of Alloy 22 was carried out in 4 M NaCl, and 4 M NaCl with sulfate additions of 0.4 and 0.04 M between 45 and 105 °C with Multiple Crevice Assembly (MCA) specimens. The susceptibility to corrosion was found to decrease in the presence of sulfate...

...Abstract The U.S. Department of Energy (DOE) is currently preparing a license application for the permanent disposal of high level radioactive waste at Yucca Mountain, Nevada. The proposed waste package design consists of an outer container made of Alloy 22, a corrosion resistant Ni-Cr-Mo-W alloy...