Note on the Influence of Nitrogen Content on the Resistance to Pitting Corrosion of Stainless Steels

Truman, J. E.; Coleman, Maxwell J.; Pirt, K. R.

doi:10.1179/000705977798318973

Cited by 102 publications

(24 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Localised breakdown of the passive film causes pitting or crevice corrosion while failures in the passive film on a larger scale often cause uniform corrosion. Solutions with low or high pH result in the breakdown of passive layer on a larger scale and the subsequent corrosion propagation is determined by the corrosive environment [15,16]. During the salt fog test, the pH was kept between 6.5 to 7.2 at 35ºC and 5% salt solution.…”

Section: Resultsmentioning

confidence: 99%

Accelerated corrosion tests on waste-gated turbocharger’s adjustable and fixed end-links

Wilton-Smith

Khan

Saeed

et al. 2017

WIT Transactions on State-of-the-Art in Science and Engineering

View full text Add to dashboard Cite

A turbocharger which has been mounted to a heavy duty automotive diesel engine can be subjected to various aggressive environments and a range of temperatures varying from ambient to 670°C. Extreme operating environments and temperatures can initiate corrosion leading to the degradation of the components. The present research evaluates the corrosion resistance of the zinc-coated and stainless steel waste-gate end-links based on accelerated corrosion and dust particles tests, using an environmental test rig. Samples were exposed to the tests for 504 hours. Images of the specimens were captured to record corrosion build-up and its progression on the surfaces during the exposure time. These results were then used to evaluate the corrosion resistance ability of both, zinc coated fixed and stainless steel adjustable end-links. Accumulation of corrosion and the build-up of salt deposits were observed on both end-links during and after the experiments.

show abstract

Section: Resultsmentioning

confidence: 99%

Accelerated corrosion tests on waste-gated turbocharger’s adjustable and fixed end-links

Wilton-Smith

Khan

Saeed

et al. 2017

WIT Transactions on State-of-the-Art in Science and Engineering

View full text Add to dashboard Cite

show abstract

“…This synergistic effect has been reported. [17][18][19][20][21] Olsson 17) suggested that the synergistic effect of duplex stainless steels was due to stabilization of the passive film by the interaction of molybdates and ammonium ions.…”

Section: Resultsmentioning

confidence: 99%

Localized Corrosion Behavior of High Nitrogen-bearing Austenitic Stainless Steels in Seawater Environment

2003

View full text Add to dashboard Cite

Crevice corrosion behavior of high nitrogen-bearing stainless steels with up to 1.1 mass% nitrogen were investigated in artificial seawater. Specimens were highly purified and contained ultra-high nitrogen of about 1 mass% obtained by using nitrogen gas pressurized electroslag remelting (P-ESR) system. 23%Cr-4%Ni-0 to 2%Mo-0.7 to 1.1%N stainless steels were used as test specimens. Crevice corrosion resistant properties of the stainless steels were evaluated by means of electrochemical corrosion test method using multiple crevice assemblies. Crevice corrosion was confirmed by visual observation to be generated after test and by in-situ current response under test. It was seen that there was a positive correlation between nitrogen content and crevice corrosion potential. High nitrogen-bearing austenitic stainless steels produced by P-ESR had good crevice corrosion resistance. It was also found that ultra-high nitrogen stainless steels containing molybdenum had superior crevice corrosion resistance. Surface of high nitrogen stainless steel was analyzed using X-ray photoelectron spectroscopy (XPS). After polarization at the passive potential region (at ϩ300 mV vs. SCE), an alloying nitrogen or nitride peak of N1s spectra appeared at higher take-off angle measurement, indicating that nitrogen concentrated at the inner layer of the interface between passive film and bulk metal. Enriched nitrogen at the interface may be possible to improve crevice corrosion resistance.

show abstract

“…Valli et al [17], and Truman et al [18], showed an enhancement of pitting corrosion after the addition of N into the alloy. The greatest effect of nitrogen has been observed in molybdenum bearing stainless steels, suggesting a synergism between molybdenum and nitrogen [19,20].…”

Section: Introductionmentioning

confidence: 99%

The wet corrosion of Mo and Mo-Ti alloy thin film - Part IV: The effect of nitriding

Tomachuk

Mitton

Špringer

et al. 2006

Materials and Corrosion

View full text Add to dashboard Cite

A considerable number of detailed investigations have been carried out on the deposition and characterisation of molybdenum and molybdenum-titanium-nitride films by employing a variety of techniques. However, very little is currently known about the effect of composition (N 2 /Ar flow rate) on the corrosion properties of MoN and MoTiN thin films for aggressive ambient conditions. In this work, the electrochemical and corrosion behaviour of MoN and MoTiN thin films, produced by Physical Vapour Deposition (PVD) with different N 2 /Ar flow rates, has been investigated by Electrochemical Impedance Spectroscopy (EIS) in aerated alkaline chloride solution and compared with the behaviour of pure molybdenum in the same environment. Results obtained indicate that increasing nitrogen content in the film leads to a beneficial effect on the corrosion resistance, but results in decreased electrical conductivity of the film that may limit their application as back contact in photovoltaic modules.

show abstract

Note on the Influence of Nitrogen Content on the Resistance to Pitting Corrosion of Stainless Steels

Cited by 102 publications

References 6 publications

Accelerated corrosion tests on waste-gated turbocharger’s adjustable and fixed end-links

Accelerated corrosion tests on waste-gated turbocharger’s adjustable and fixed end-links

Localized Corrosion Behavior of High Nitrogen-bearing Austenitic Stainless Steels in Seawater Environment

The wet corrosion of Mo and Mo-Ti alloy thin film - Part IV: The effect of nitriding

Contact Info

Product

Resources

About