Corrosion resistance of ultra fine-grained Ti

Balyanov, A.

doi:10.1016/s1359-6462(04)00235-0

Cited by 36 publications

(47 citation statements)

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“…Hence, the improved corrosion resistance of NC Co coatings in NaOH solution can be explained as followings: since the passivation first started on surface crystalline lattice defects and NC materials have high density of grain boundaries and dislocations inside grains [32]. Therefore, it is believed that the high fractions of GBs will provide an increased number of active sites to quickly form a continuous and protective passive film [33]. As a result, the NC Co coatings exhibited improved passivation behavior than the CG one with much lower current density in the passive region.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density

Wang

Lin

Zeng

et al. 2007

Electrochimica Acta

128

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Section: Resultsmentioning

confidence: 99%

Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density

Wang

Lin

Zeng

et al. 2007

Electrochimica Acta

128

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“…However, there is evidence that ns titanium has better corrosion resistance than coarse-grained titanium. 58 Several reports have suggested there is little difference in the corrosion resistance of ns materials when compared with their coarse-grained counterparts and the enhancement in the corrosion resistance of ns titanium is probably due to the more uniform nature of the corrosion. Specifi cally, in coarsegrained titanium the dissolution of the material is heavily concentrated at the grain boundaries because they have a higher energy than in the grain interior.…”

Section: Corrosion Resistancementioning

confidence: 99%

The fundamentals of nanostructured materials processed by severe plastic deformation

Zhu

Langdon

2004

JOM

200

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Nanomaterials by SPD OverviewNanostructured materials produced by severe plastic deformation (SPD) are 100% dense, contamination-free, and suffi ciently large for use in real commercial structural applications. These materials are found to have high strength, good ductility, superior superplasticity, a low friction coeffi cient, high wear resistance, enhanced highcycle fatigue life, and good corrosion resistance. This article reviews the structures and properties of nanostructured materials produced by SPD and reports recent progress in determining the deformation mechanisms that lead to these superior mechanical properties.

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“…The ability of the inhibitor to replace water molecules depends on the electrostatic interaction between the metal and the inhibitor. The interaction first started on surface crystalline lattice defects, and nanocrystal materials have a high density of grain boundaries and dislocations inside grains [19]. Hence, it is believed that the nanocrystal electrodeposited iron coating has a high density of active sites for inhibitor adsorption, which leads to a high fraction of passive layers and low corrosion rates.…”

Section: Methodsmentioning

confidence: 99%

The influence of nanocrystalline state of iron on the corrosion inhibitor behavior in aqueous solution

Afshari

Dehghanian

2010

J Appl Electrochem

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Effect of grain size reduction on the electrochemical and corrosion behavior of iron of different grain sizes (32-320 nm) produced by direct and pulsed current electrodeposition was characterized using Tafel polarization curves and electrochemical impedance spectroscopy (EIS). The grain size of deposits was determined by X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM). The most intensive first-order peak (110) of the XRD patterns was taken for detailed analysis using a Gaussian fitting curve. The electrochemical tests were carried out in electrolyte 30 mg L -1 NaCl ? 70 mg L -1 Na 2 SO 4 ? 250 mg L -1 NaNO 2 aqueous solution. It was found that the corrosion potential and corrosion current density significantly changed as the microstructure morphology was changed. Results obtained from electrochemical tests suggested that the inhibition effect and corrosion protection of sodium nitrite inhibitor in nearneutral aqueous solutions increased as the grain size decreased from submicrocrystalline to nanocrystalline. This was attributed to the excess free energy, and concomitantly the increased number of the active sites caused by higher grain boundary and triple junction content in the nanocrystalline surface, which provides sites for electrochemical activity, and effect of sodium nitrite, was more pronounced.

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Corrosion resistance of ultra fine-grained Ti

Cited by 36 publications

References 0 publications

Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density

Electrochemical corrosion behavior of nanocrystalline Co coatings explained by higher grain boundary density

The fundamentals of nanostructured materials processed by severe plastic deformation

The influence of nanocrystalline state of iron on the corrosion inhibitor behavior in aqueous solution

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