Crevice corrosion damage function for grade-2 titanium of iron content 0.078wt% at 95°C

He, Xihua; Noël, James J.; Shoesmith, David W.

doi:10.1016/j.corsci.2004.06.022

Cited by 27 publications

(14 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Theexistenceofathresholdtemperatureisexplainedby the mechanism shown in Figure 6. Above a threshold temperature,closeto65°C,metastableeventsbecomepossible whenafilmbreakdownandrepassivationprocessstarts.This process leads to formation of grain boundaries and more openpathwaysintheoxide,andconsequentlycorrosioncan happen.Undertheoccludedcreviceconditions,cationhydrolysisanddevelopmentoflocalacidityoccurs.Thisfilmdegradationprocessisaprecursortotheonsetofmetastablefilm breakdownevents (65).Oncecreviceisinitiated,propagation isfast,beingsupportedbothwithinthecrevicebyhydrogen evolution(70%-80%)andoutsidethecrevicebyO 2 reduction (30%-20%) (30).…”

Section: Crevice Corrosionmentioning

confidence: 99%

“…He et al found a damage function relative to titanium in 0.27 M NaCI at 95°C (65). In the first phase, about 30 days long, the maximum penetration depth, d max in μm, followed the equation:…”

Section: Uniform Corrosion Of Titanium and Its Alloysmentioning

confidence: 99%

“…Under the occluded crevice conditions, cation hydrolysis and development of local acidity occurs. This film degradation process is a precursor to the onset of metastable film breakdown events (65). Once crevice is initiated, propagation is fast, being supported both within the crevice by hydrogen evolution (70%–80%) and outside the crevice by O 2 reduction (30%–20%) (30).…”

Section: Uniform Corrosion Of Titanium and Its Alloysmentioning

confidence: 99%

See 2 more Smart Citations

Corrosion of Titanium: Part 1: Aggressive Environments and Main Forms of Degradation

Prando

Brenna

Diamanti

et al. 2017

Journal of Applied Biomaterials & Functional Materials

View full text Add to dashboard Cite

expanded to other applications, such as power plants, the foodindustry,petrochemicalplants,refineries,heatexchangers,marinestructuresandmedicalprostheses(4,5). Commercially available titanium is classified depending on its purity and elemental composition. The main classification for titanium is provided by the American Society forTestingandMaterials(ASTM).Thefirst4ASTMgradesof titanium are referred to as "commercially pure" and are not alloyed but only present differences in terms of contents of impurities, especially oxygen (6): grade 1 contains a maxi-mumof0.18% oxygen whilegrade4hasamaximumof0.40%.

show abstract

Section: Crevice Corrosionmentioning

confidence: 99%

Section: Uniform Corrosion Of Titanium and Its Alloysmentioning

confidence: 99%

Section: Uniform Corrosion Of Titanium and Its Alloysmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion of Titanium: Part 1: Aggressive Environments and Main Forms of Degradation

Prando

Brenna

Diamanti

et al. 2017

Journal of Applied Biomaterials & Functional Materials

View full text Add to dashboard Cite

show abstract

“…8,17 In those previous studies, individual propagation events were not distinguishable in the I c /E c plots, despite the optical images showing some localization in more deeply corroded sites. The slightly broader depth profile observed at 120…”

Section: Resultsmentioning

confidence: 98%

Crevice Corrosion of Grade-2 Titanium in Saline Solutions at Different Temperatures and Oxygen Concentrations

Standish

Yari

Shoesmith

et al. 2017

J. Electrochem. Soc.

View full text Add to dashboard Cite

Titanium alloys are candidate materials for the fabrication of high level nuclear waste containers but may be susceptible to crevice corrosion in the initial warm oxidizing conditions anticipated in a deep geological repository. The crevice corrosion of Grade-2 titanium has been studied in 1.0 mol/L NaCl at various temperatures (120 • C and 150 • C) and oxygen concentrations using a galvanic coupling technique. The current due to propagation supported by oxygen reduction on the surface external to the crevice was monitored electrochemically and the total propagation determined from weight change measurements. The redistribution of impurities (Fe, V, Mo) during corrosion was determined by dynamic secondary ion mass spectrometry. Propagation was dominantly driven by the reduction of protons created inside the crevice by cation hydrolysis. Damage accumulated at the locations of Ti x Fe intermetallic particles, which are both anodically reactive and function as catalytic cathodes for proton reduction. The compact TiO 2 • xH 2 O deposits at active sites led to stifling of corrosion when only between 9 and 56% of the available oxygen had been consumed. While propagation was more rapid at 150 • C than at 120 • C, it was more readily stifled at the higher temperature, leading to the accumulation of less damage.

show abstract

“…The tightness is adjusted with the help of a PFTE "feeler," as described by the authors, using open-faced wrenches. [72] The approach was used by Shoesmith et al to construct corrosion damage functions [74] as well as to determine the influence of temperature on crevice corrosion susceptibility. [72].…”

Section: Studied Among Other Variables the Effect Of Torque On The mentioning

confidence: 99%

Crevice corrosion

Iannuzzi¹,

Salasi²,

Hornus³

2019

Preprint

View full text Add to dashboard Cite

Today, there is a large number of accepted tests to study crevice corrosion phenomena. The different methodologies can be used for comparing and ranking alloys, quality control, assessing the effects of changes in manufacturing routes and alloy composition on crevice corrosion resistance, as well as in evaluations to determine critical temperatures and potentials and induction times.The goal of the chapter is to describe the various standard test methods available to the corrosion specialist as well as adaptations to study specific crevice corrosion parameters. The focus is on test methods developed by the ASTM Committee G-1 on corrosion of metals, but other procedures are also included. While the test principles have been applied to many alloy systems, the scope of the chapter is on stainless steels and nickel-based alloys.

show abstract

Crevice corrosion damage function for grade-2 titanium of iron content 0.078wt% at 95°C

Cited by 27 publications

References 15 publications

Corrosion of Titanium: Part 1: Aggressive Environments and Main Forms of Degradation

Corrosion of Titanium: Part 1: Aggressive Environments and Main Forms of Degradation

Crevice Corrosion of Grade-2 Titanium in Saline Solutions at Different Temperatures and Oxygen Concentrations

Crevice corrosion

Contact Info

Product

Resources

About